Slide 1

ANALYSIS OF

FREE GOVERNOR MODE OF
OPERATION
LOAD CHANGE OVER AT
18:00HRS
ON 05-FEB-05

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 1
5 0 .8 0

220

5 0 .4 0
5 0 .2 0
5 0 .0 0

200
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

190

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

180

1 6 :0 1

M W ----->

210

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 2
5 0 .8 0

210

5 0 .4 0
5 0 .2 0
5 0 .0 0

190
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

180

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

170

1 6 :0 1

M W ----->

200

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 3
5 0 .8 0

200

5 0 .2 0

190

5 0 .0 0
4 9 .8 0
4 9 .6 0

180

4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

170

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 4

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

510

5 0 .6 0

490

5 0 .4 0

470

5 0 .2 0

450

5 0 .0 0

430

4 9 .8 0

410

4 9 .6 0

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

530

1 6 :0 1

M W ----->

NTPC - 5

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 1

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

150

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

160

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 2

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 3

5 0 .6 0
5 0 .4 0
5 0 .2 0
160

5 0 .0 0
4 9 .8 0

150

4 9 .6 0
4 9 .4 0

140

4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

130

1 6 :0 1

M W ----->

170

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 4
5 0 .6 0
5 0 .4 0

M W ----->

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

190

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 5
5 0 .6 0
190

M W ----->

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

200

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 6
5 0 .6 0
5 0 .2 0

170

5 0 .0 0
4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 7
5 0 .6 0

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

10

4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 1
5 0 .6 0
5 0 .4 0
5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

180

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 2

5 0 .4 0

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .6 0

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SIMHADRI 1 & 2

600

50.80
50.60
50.40
50.20
50.00

300
49.80
49.60

200

49.40
100
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

16:01

M W ----->

400

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

500

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RYTPS 1
50.80

250

50.40
50.20

150
50.00
49.80
100
49.60
49.40

50

49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

0

16:01

M W ----->

200

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KTS 9
50.80

250

50.20
50.00
240
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

230

16:01

M W ----->

50.40

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

200

50.80

180

50.60

160

50.40
50.20

120
50.00
100
49.80
80
49.60

60

49.40

40

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

49.00

19:01

0

18:01

49.20

17:01

20

16:01

M W ----->

140

F R E Q IN H Z ----->

VTS 1 TO 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SHARAVATHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

160

5 0 .8 0

140

5 0 .6 0
5 0 .4 0
5 0 .2 0

100

5 0 .0 0
80
4 9 .8 0
60

4 9 .6 0

40

4 9 .4 0

2 0 :0 1

4 9 .0 0

1 9 :0 1

0

1 8 :0 1

4 9 .2 0

1 7 :0 1

20

1 6 :0 1

M W ----->

120

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

NAGJHERI 1

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

VARAHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

F R E Q IN H Z ----->

5 0 .6 0

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RTPS 1
5 0 .8 0

200

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

IDDUKKI 1
5 0 .8 0

140

5 0 .4 0
5 0 .2 0
80

5 0 .0 0

60

4 9 .8 0
4 9 .6 0

40
4 9 .4 0
20

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

100

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

120

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SABRIGIRI 1
5 0 .8 0

60

50

5 0 .2 0

40

5 0 .0 0
30
4 9 .8 0
4 9 .6 0

20

4 9 .4 0
10
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

5 0 .4 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

LOWER PERIYAR 1
5 0 .8 0

10

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

TTPS 2
50.80

220

50.40
50.20
50.00

200
49.80
49.60
190

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

180

16:01

M W ----->

210

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

MTPS 2
50.80

220

50.20
50.00
210
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

200

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NMTPS 1
50.80

230

50.60

50.20

210

50.00
200
49.80
49.60

190

49.40
180
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

170

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

220

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

ETS 5
50.80

80

50.20

70

50.00
49.80
49.60

60

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

50

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KUNDAH III - 1
50.80

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

50.40
50.20
50.00

30
49.80
49.60

20

49.40
10
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

F R E Q IN H Z ----->

50.60

40

16:01

M W ----->

50


Slide 2

ANALYSIS OF

FREE GOVERNOR MODE OF
OPERATION
LOAD CHANGE OVER AT
18:00HRS
ON 05-FEB-05

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 1
5 0 .8 0

220

5 0 .4 0
5 0 .2 0
5 0 .0 0

200
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

190

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

180

1 6 :0 1

M W ----->

210

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 2
5 0 .8 0

210

5 0 .4 0
5 0 .2 0
5 0 .0 0

190
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

180

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

170

1 6 :0 1

M W ----->

200

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 3
5 0 .8 0

200

5 0 .2 0

190

5 0 .0 0
4 9 .8 0
4 9 .6 0

180

4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

170

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 4

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

510

5 0 .6 0

490

5 0 .4 0

470

5 0 .2 0

450

5 0 .0 0

430

4 9 .8 0

410

4 9 .6 0

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

530

1 6 :0 1

M W ----->

NTPC - 5

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 1

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

150

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

160

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 2

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 3

5 0 .6 0
5 0 .4 0
5 0 .2 0
160

5 0 .0 0
4 9 .8 0

150

4 9 .6 0
4 9 .4 0

140

4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

130

1 6 :0 1

M W ----->

170

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 4
5 0 .6 0
5 0 .4 0

M W ----->

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

190

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 5
5 0 .6 0
190

M W ----->

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

200

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 6
5 0 .6 0
5 0 .2 0

170

5 0 .0 0
4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 7
5 0 .6 0

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

10

4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 1
5 0 .6 0
5 0 .4 0
5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

180

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 2

5 0 .4 0

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .6 0

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SIMHADRI 1 & 2

600

50.80
50.60
50.40
50.20
50.00

300
49.80
49.60

200

49.40
100
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

16:01

M W ----->

400

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

500

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RYTPS 1
50.80

250

50.40
50.20

150
50.00
49.80
100
49.60
49.40

50

49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

0

16:01

M W ----->

200

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KTS 9
50.80

250

50.20
50.00
240
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

230

16:01

M W ----->

50.40

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

200

50.80

180

50.60

160

50.40
50.20

120
50.00
100
49.80
80
49.60

60

49.40

40

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

49.00

19:01

0

18:01

49.20

17:01

20

16:01

M W ----->

140

F R E Q IN H Z ----->

VTS 1 TO 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SHARAVATHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

160

5 0 .8 0

140

5 0 .6 0
5 0 .4 0
5 0 .2 0

100

5 0 .0 0
80
4 9 .8 0
60

4 9 .6 0

40

4 9 .4 0

2 0 :0 1

4 9 .0 0

1 9 :0 1

0

1 8 :0 1

4 9 .2 0

1 7 :0 1

20

1 6 :0 1

M W ----->

120

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

NAGJHERI 1

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

VARAHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

F R E Q IN H Z ----->

5 0 .6 0

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RTPS 1
5 0 .8 0

200

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

IDDUKKI 1
5 0 .8 0

140

5 0 .4 0
5 0 .2 0
80

5 0 .0 0

60

4 9 .8 0
4 9 .6 0

40
4 9 .4 0
20

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

100

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

120

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SABRIGIRI 1
5 0 .8 0

60

50

5 0 .2 0

40

5 0 .0 0
30
4 9 .8 0
4 9 .6 0

20

4 9 .4 0
10
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

5 0 .4 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

LOWER PERIYAR 1
5 0 .8 0

10

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

TTPS 2
50.80

220

50.40
50.20
50.00

200
49.80
49.60
190

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

180

16:01

M W ----->

210

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

MTPS 2
50.80

220

50.20
50.00
210
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

200

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NMTPS 1
50.80

230

50.60

50.20

210

50.00
200
49.80
49.60

190

49.40
180
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

170

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

220

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

ETS 5
50.80

80

50.20

70

50.00
49.80
49.60

60

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

50

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KUNDAH III - 1
50.80

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

50.40
50.20
50.00

30
49.80
49.60

20

49.40
10
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

F R E Q IN H Z ----->

50.60

40

16:01

M W ----->

50


Slide 3

ANALYSIS OF

FREE GOVERNOR MODE OF
OPERATION
LOAD CHANGE OVER AT
18:00HRS
ON 05-FEB-05

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 1
5 0 .8 0

220

5 0 .4 0
5 0 .2 0
5 0 .0 0

200
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

190

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

180

1 6 :0 1

M W ----->

210

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 2
5 0 .8 0

210

5 0 .4 0
5 0 .2 0
5 0 .0 0

190
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

180

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

170

1 6 :0 1

M W ----->

200

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 3
5 0 .8 0

200

5 0 .2 0

190

5 0 .0 0
4 9 .8 0
4 9 .6 0

180

4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

170

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 4

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

510

5 0 .6 0

490

5 0 .4 0

470

5 0 .2 0

450

5 0 .0 0

430

4 9 .8 0

410

4 9 .6 0

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

530

1 6 :0 1

M W ----->

NTPC - 5

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 1

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

150

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

160

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 2

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 3

5 0 .6 0
5 0 .4 0
5 0 .2 0
160

5 0 .0 0
4 9 .8 0

150

4 9 .6 0
4 9 .4 0

140

4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

130

1 6 :0 1

M W ----->

170

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 4
5 0 .6 0
5 0 .4 0

M W ----->

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

190

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 5
5 0 .6 0
190

M W ----->

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

200

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 6
5 0 .6 0
5 0 .2 0

170

5 0 .0 0
4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 7
5 0 .6 0

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

10

4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 1
5 0 .6 0
5 0 .4 0
5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

180

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 2

5 0 .4 0

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .6 0

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SIMHADRI 1 & 2

600

50.80
50.60
50.40
50.20
50.00

300
49.80
49.60

200

49.40
100
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

16:01

M W ----->

400

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

500

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RYTPS 1
50.80

250

50.40
50.20

150
50.00
49.80
100
49.60
49.40

50

49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

0

16:01

M W ----->

200

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KTS 9
50.80

250

50.20
50.00
240
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

230

16:01

M W ----->

50.40

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

200

50.80

180

50.60

160

50.40
50.20

120
50.00
100
49.80
80
49.60

60

49.40

40

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

49.00

19:01

0

18:01

49.20

17:01

20

16:01

M W ----->

140

F R E Q IN H Z ----->

VTS 1 TO 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SHARAVATHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

160

5 0 .8 0

140

5 0 .6 0
5 0 .4 0
5 0 .2 0

100

5 0 .0 0
80
4 9 .8 0
60

4 9 .6 0

40

4 9 .4 0

2 0 :0 1

4 9 .0 0

1 9 :0 1

0

1 8 :0 1

4 9 .2 0

1 7 :0 1

20

1 6 :0 1

M W ----->

120

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

NAGJHERI 1

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

VARAHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

F R E Q IN H Z ----->

5 0 .6 0

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RTPS 1
5 0 .8 0

200

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

IDDUKKI 1
5 0 .8 0

140

5 0 .4 0
5 0 .2 0
80

5 0 .0 0

60

4 9 .8 0
4 9 .6 0

40
4 9 .4 0
20

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

100

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

120

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SABRIGIRI 1
5 0 .8 0

60

50

5 0 .2 0

40

5 0 .0 0
30
4 9 .8 0
4 9 .6 0

20

4 9 .4 0
10
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

5 0 .4 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

LOWER PERIYAR 1
5 0 .8 0

10

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

TTPS 2
50.80

220

50.40
50.20
50.00

200
49.80
49.60
190

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

180

16:01

M W ----->

210

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

MTPS 2
50.80

220

50.20
50.00
210
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

200

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NMTPS 1
50.80

230

50.60

50.20

210

50.00
200
49.80
49.60

190

49.40
180
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

170

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

220

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

ETS 5
50.80

80

50.20

70

50.00
49.80
49.60

60

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

50

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KUNDAH III - 1
50.80

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

50.40
50.20
50.00

30
49.80
49.60

20

49.40
10
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

F R E Q IN H Z ----->

50.60

40

16:01

M W ----->

50


Slide 4

ANALYSIS OF

FREE GOVERNOR MODE OF
OPERATION
LOAD CHANGE OVER AT
18:00HRS
ON 05-FEB-05

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 1
5 0 .8 0

220

5 0 .4 0
5 0 .2 0
5 0 .0 0

200
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

190

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

180

1 6 :0 1

M W ----->

210

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 2
5 0 .8 0

210

5 0 .4 0
5 0 .2 0
5 0 .0 0

190
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

180

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

170

1 6 :0 1

M W ----->

200

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 3
5 0 .8 0

200

5 0 .2 0

190

5 0 .0 0
4 9 .8 0
4 9 .6 0

180

4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

170

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 4

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

510

5 0 .6 0

490

5 0 .4 0

470

5 0 .2 0

450

5 0 .0 0

430

4 9 .8 0

410

4 9 .6 0

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

530

1 6 :0 1

M W ----->

NTPC - 5

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 1

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

150

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

160

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 2

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 3

5 0 .6 0
5 0 .4 0
5 0 .2 0
160

5 0 .0 0
4 9 .8 0

150

4 9 .6 0
4 9 .4 0

140

4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

130

1 6 :0 1

M W ----->

170

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 4
5 0 .6 0
5 0 .4 0

M W ----->

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

190

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 5
5 0 .6 0
190

M W ----->

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

200

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 6
5 0 .6 0
5 0 .2 0

170

5 0 .0 0
4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 7
5 0 .6 0

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

10

4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 1
5 0 .6 0
5 0 .4 0
5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

180

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 2

5 0 .4 0

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .6 0

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SIMHADRI 1 & 2

600

50.80
50.60
50.40
50.20
50.00

300
49.80
49.60

200

49.40
100
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

16:01

M W ----->

400

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

500

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RYTPS 1
50.80

250

50.40
50.20

150
50.00
49.80
100
49.60
49.40

50

49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

0

16:01

M W ----->

200

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KTS 9
50.80

250

50.20
50.00
240
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

230

16:01

M W ----->

50.40

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

200

50.80

180

50.60

160

50.40
50.20

120
50.00
100
49.80
80
49.60

60

49.40

40

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

49.00

19:01

0

18:01

49.20

17:01

20

16:01

M W ----->

140

F R E Q IN H Z ----->

VTS 1 TO 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SHARAVATHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

160

5 0 .8 0

140

5 0 .6 0
5 0 .4 0
5 0 .2 0

100

5 0 .0 0
80
4 9 .8 0
60

4 9 .6 0

40

4 9 .4 0

2 0 :0 1

4 9 .0 0

1 9 :0 1

0

1 8 :0 1

4 9 .2 0

1 7 :0 1

20

1 6 :0 1

M W ----->

120

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

NAGJHERI 1

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

VARAHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

F R E Q IN H Z ----->

5 0 .6 0

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RTPS 1
5 0 .8 0

200

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

IDDUKKI 1
5 0 .8 0

140

5 0 .4 0
5 0 .2 0
80

5 0 .0 0

60

4 9 .8 0
4 9 .6 0

40
4 9 .4 0
20

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

100

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

120

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SABRIGIRI 1
5 0 .8 0

60

50

5 0 .2 0

40

5 0 .0 0
30
4 9 .8 0
4 9 .6 0

20

4 9 .4 0
10
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

5 0 .4 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

LOWER PERIYAR 1
5 0 .8 0

10

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

TTPS 2
50.80

220

50.40
50.20
50.00

200
49.80
49.60
190

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

180

16:01

M W ----->

210

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

MTPS 2
50.80

220

50.20
50.00
210
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

200

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NMTPS 1
50.80

230

50.60

50.20

210

50.00
200
49.80
49.60

190

49.40
180
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

170

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

220

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

ETS 5
50.80

80

50.20

70

50.00
49.80
49.60

60

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

50

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KUNDAH III - 1
50.80

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

50.40
50.20
50.00

30
49.80
49.60

20

49.40
10
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

F R E Q IN H Z ----->

50.60

40

16:01

M W ----->

50


Slide 5

ANALYSIS OF

FREE GOVERNOR MODE OF
OPERATION
LOAD CHANGE OVER AT
18:00HRS
ON 05-FEB-05

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 1
5 0 .8 0

220

5 0 .4 0
5 0 .2 0
5 0 .0 0

200
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

190

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

180

1 6 :0 1

M W ----->

210

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 2
5 0 .8 0

210

5 0 .4 0
5 0 .2 0
5 0 .0 0

190
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

180

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

170

1 6 :0 1

M W ----->

200

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 3
5 0 .8 0

200

5 0 .2 0

190

5 0 .0 0
4 9 .8 0
4 9 .6 0

180

4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

170

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 4

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

510

5 0 .6 0

490

5 0 .4 0

470

5 0 .2 0

450

5 0 .0 0

430

4 9 .8 0

410

4 9 .6 0

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

530

1 6 :0 1

M W ----->

NTPC - 5

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 1

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

150

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

160

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 2

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 3

5 0 .6 0
5 0 .4 0
5 0 .2 0
160

5 0 .0 0
4 9 .8 0

150

4 9 .6 0
4 9 .4 0

140

4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

130

1 6 :0 1

M W ----->

170

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 4
5 0 .6 0
5 0 .4 0

M W ----->

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

190

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 5
5 0 .6 0
190

M W ----->

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

200

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 6
5 0 .6 0
5 0 .2 0

170

5 0 .0 0
4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 7
5 0 .6 0

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

10

4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 1
5 0 .6 0
5 0 .4 0
5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

180

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 2

5 0 .4 0

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .6 0

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SIMHADRI 1 & 2

600

50.80
50.60
50.40
50.20
50.00

300
49.80
49.60

200

49.40
100
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

16:01

M W ----->

400

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

500

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RYTPS 1
50.80

250

50.40
50.20

150
50.00
49.80
100
49.60
49.40

50

49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

0

16:01

M W ----->

200

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KTS 9
50.80

250

50.20
50.00
240
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

230

16:01

M W ----->

50.40

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

200

50.80

180

50.60

160

50.40
50.20

120
50.00
100
49.80
80
49.60

60

49.40

40

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

49.00

19:01

0

18:01

49.20

17:01

20

16:01

M W ----->

140

F R E Q IN H Z ----->

VTS 1 TO 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SHARAVATHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

160

5 0 .8 0

140

5 0 .6 0
5 0 .4 0
5 0 .2 0

100

5 0 .0 0
80
4 9 .8 0
60

4 9 .6 0

40

4 9 .4 0

2 0 :0 1

4 9 .0 0

1 9 :0 1

0

1 8 :0 1

4 9 .2 0

1 7 :0 1

20

1 6 :0 1

M W ----->

120

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

NAGJHERI 1

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

VARAHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

F R E Q IN H Z ----->

5 0 .6 0

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RTPS 1
5 0 .8 0

200

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

IDDUKKI 1
5 0 .8 0

140

5 0 .4 0
5 0 .2 0
80

5 0 .0 0

60

4 9 .8 0
4 9 .6 0

40
4 9 .4 0
20

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

100

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

120

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SABRIGIRI 1
5 0 .8 0

60

50

5 0 .2 0

40

5 0 .0 0
30
4 9 .8 0
4 9 .6 0

20

4 9 .4 0
10
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

5 0 .4 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

LOWER PERIYAR 1
5 0 .8 0

10

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

TTPS 2
50.80

220

50.40
50.20
50.00

200
49.80
49.60
190

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

180

16:01

M W ----->

210

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

MTPS 2
50.80

220

50.20
50.00
210
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

200

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NMTPS 1
50.80

230

50.60

50.20

210

50.00
200
49.80
49.60

190

49.40
180
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

170

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

220

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

ETS 5
50.80

80

50.20

70

50.00
49.80
49.60

60

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

50

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KUNDAH III - 1
50.80

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

50.40
50.20
50.00

30
49.80
49.60

20

49.40
10
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

F R E Q IN H Z ----->

50.60

40

16:01

M W ----->

50


Slide 6

ANALYSIS OF

FREE GOVERNOR MODE OF
OPERATION
LOAD CHANGE OVER AT
18:00HRS
ON 05-FEB-05

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 1
5 0 .8 0

220

5 0 .4 0
5 0 .2 0
5 0 .0 0

200
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

190

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

180

1 6 :0 1

M W ----->

210

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 2
5 0 .8 0

210

5 0 .4 0
5 0 .2 0
5 0 .0 0

190
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

180

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

170

1 6 :0 1

M W ----->

200

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 3
5 0 .8 0

200

5 0 .2 0

190

5 0 .0 0
4 9 .8 0
4 9 .6 0

180

4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

170

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 4

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

510

5 0 .6 0

490

5 0 .4 0

470

5 0 .2 0

450

5 0 .0 0

430

4 9 .8 0

410

4 9 .6 0

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

530

1 6 :0 1

M W ----->

NTPC - 5

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 1

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

150

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

160

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 2

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 3

5 0 .6 0
5 0 .4 0
5 0 .2 0
160

5 0 .0 0
4 9 .8 0

150

4 9 .6 0
4 9 .4 0

140

4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

130

1 6 :0 1

M W ----->

170

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 4
5 0 .6 0
5 0 .4 0

M W ----->

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

190

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 5
5 0 .6 0
190

M W ----->

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

200

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 6
5 0 .6 0
5 0 .2 0

170

5 0 .0 0
4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 7
5 0 .6 0

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

10

4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 1
5 0 .6 0
5 0 .4 0
5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

180

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 2

5 0 .4 0

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .6 0

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SIMHADRI 1 & 2

600

50.80
50.60
50.40
50.20
50.00

300
49.80
49.60

200

49.40
100
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

16:01

M W ----->

400

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

500

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RYTPS 1
50.80

250

50.40
50.20

150
50.00
49.80
100
49.60
49.40

50

49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

0

16:01

M W ----->

200

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KTS 9
50.80

250

50.20
50.00
240
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

230

16:01

M W ----->

50.40

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

200

50.80

180

50.60

160

50.40
50.20

120
50.00
100
49.80
80
49.60

60

49.40

40

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

49.00

19:01

0

18:01

49.20

17:01

20

16:01

M W ----->

140

F R E Q IN H Z ----->

VTS 1 TO 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SHARAVATHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

160

5 0 .8 0

140

5 0 .6 0
5 0 .4 0
5 0 .2 0

100

5 0 .0 0
80
4 9 .8 0
60

4 9 .6 0

40

4 9 .4 0

2 0 :0 1

4 9 .0 0

1 9 :0 1

0

1 8 :0 1

4 9 .2 0

1 7 :0 1

20

1 6 :0 1

M W ----->

120

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

NAGJHERI 1

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

VARAHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

F R E Q IN H Z ----->

5 0 .6 0

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RTPS 1
5 0 .8 0

200

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

IDDUKKI 1
5 0 .8 0

140

5 0 .4 0
5 0 .2 0
80

5 0 .0 0

60

4 9 .8 0
4 9 .6 0

40
4 9 .4 0
20

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

100

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

120

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SABRIGIRI 1
5 0 .8 0

60

50

5 0 .2 0

40

5 0 .0 0
30
4 9 .8 0
4 9 .6 0

20

4 9 .4 0
10
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

5 0 .4 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

LOWER PERIYAR 1
5 0 .8 0

10

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

TTPS 2
50.80

220

50.40
50.20
50.00

200
49.80
49.60
190

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

180

16:01

M W ----->

210

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

MTPS 2
50.80

220

50.20
50.00
210
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

200

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NMTPS 1
50.80

230

50.60

50.20

210

50.00
200
49.80
49.60

190

49.40
180
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

170

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

220

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

ETS 5
50.80

80

50.20

70

50.00
49.80
49.60

60

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

50

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KUNDAH III - 1
50.80

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

50.40
50.20
50.00

30
49.80
49.60

20

49.40
10
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

F R E Q IN H Z ----->

50.60

40

16:01

M W ----->

50


Slide 7

ANALYSIS OF

FREE GOVERNOR MODE OF
OPERATION
LOAD CHANGE OVER AT
18:00HRS
ON 05-FEB-05

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 1
5 0 .8 0

220

5 0 .4 0
5 0 .2 0
5 0 .0 0

200
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

190

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

180

1 6 :0 1

M W ----->

210

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 2
5 0 .8 0

210

5 0 .4 0
5 0 .2 0
5 0 .0 0

190
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

180

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

170

1 6 :0 1

M W ----->

200

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 3
5 0 .8 0

200

5 0 .2 0

190

5 0 .0 0
4 9 .8 0
4 9 .6 0

180

4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

170

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 4

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

510

5 0 .6 0

490

5 0 .4 0

470

5 0 .2 0

450

5 0 .0 0

430

4 9 .8 0

410

4 9 .6 0

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

530

1 6 :0 1

M W ----->

NTPC - 5

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 1

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

150

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

160

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 2

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 3

5 0 .6 0
5 0 .4 0
5 0 .2 0
160

5 0 .0 0
4 9 .8 0

150

4 9 .6 0
4 9 .4 0

140

4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

130

1 6 :0 1

M W ----->

170

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 4
5 0 .6 0
5 0 .4 0

M W ----->

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

190

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 5
5 0 .6 0
190

M W ----->

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

200

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 6
5 0 .6 0
5 0 .2 0

170

5 0 .0 0
4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 7
5 0 .6 0

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

10

4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 1
5 0 .6 0
5 0 .4 0
5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

180

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 2

5 0 .4 0

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .6 0

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SIMHADRI 1 & 2

600

50.80
50.60
50.40
50.20
50.00

300
49.80
49.60

200

49.40
100
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

16:01

M W ----->

400

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

500

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RYTPS 1
50.80

250

50.40
50.20

150
50.00
49.80
100
49.60
49.40

50

49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

0

16:01

M W ----->

200

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KTS 9
50.80

250

50.20
50.00
240
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

230

16:01

M W ----->

50.40

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

200

50.80

180

50.60

160

50.40
50.20

120
50.00
100
49.80
80
49.60

60

49.40

40

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

49.00

19:01

0

18:01

49.20

17:01

20

16:01

M W ----->

140

F R E Q IN H Z ----->

VTS 1 TO 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SHARAVATHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

160

5 0 .8 0

140

5 0 .6 0
5 0 .4 0
5 0 .2 0

100

5 0 .0 0
80
4 9 .8 0
60

4 9 .6 0

40

4 9 .4 0

2 0 :0 1

4 9 .0 0

1 9 :0 1

0

1 8 :0 1

4 9 .2 0

1 7 :0 1

20

1 6 :0 1

M W ----->

120

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

NAGJHERI 1

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

VARAHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

F R E Q IN H Z ----->

5 0 .6 0

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RTPS 1
5 0 .8 0

200

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

IDDUKKI 1
5 0 .8 0

140

5 0 .4 0
5 0 .2 0
80

5 0 .0 0

60

4 9 .8 0
4 9 .6 0

40
4 9 .4 0
20

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

100

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

120

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SABRIGIRI 1
5 0 .8 0

60

50

5 0 .2 0

40

5 0 .0 0
30
4 9 .8 0
4 9 .6 0

20

4 9 .4 0
10
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

5 0 .4 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

LOWER PERIYAR 1
5 0 .8 0

10

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

TTPS 2
50.80

220

50.40
50.20
50.00

200
49.80
49.60
190

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

180

16:01

M W ----->

210

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

MTPS 2
50.80

220

50.20
50.00
210
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

200

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NMTPS 1
50.80

230

50.60

50.20

210

50.00
200
49.80
49.60

190

49.40
180
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

170

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

220

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

ETS 5
50.80

80

50.20

70

50.00
49.80
49.60

60

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

50

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KUNDAH III - 1
50.80

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

50.40
50.20
50.00

30
49.80
49.60

20

49.40
10
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

F R E Q IN H Z ----->

50.60

40

16:01

M W ----->

50


Slide 8

ANALYSIS OF

FREE GOVERNOR MODE OF
OPERATION
LOAD CHANGE OVER AT
18:00HRS
ON 05-FEB-05

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 1
5 0 .8 0

220

5 0 .4 0
5 0 .2 0
5 0 .0 0

200
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

190

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

180

1 6 :0 1

M W ----->

210

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 2
5 0 .8 0

210

5 0 .4 0
5 0 .2 0
5 0 .0 0

190
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

180

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

170

1 6 :0 1

M W ----->

200

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 3
5 0 .8 0

200

5 0 .2 0

190

5 0 .0 0
4 9 .8 0
4 9 .6 0

180

4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

170

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 4

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

510

5 0 .6 0

490

5 0 .4 0

470

5 0 .2 0

450

5 0 .0 0

430

4 9 .8 0

410

4 9 .6 0

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

530

1 6 :0 1

M W ----->

NTPC - 5

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 1

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

150

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

160

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 2

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 3

5 0 .6 0
5 0 .4 0
5 0 .2 0
160

5 0 .0 0
4 9 .8 0

150

4 9 .6 0
4 9 .4 0

140

4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

130

1 6 :0 1

M W ----->

170

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 4
5 0 .6 0
5 0 .4 0

M W ----->

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

190

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 5
5 0 .6 0
190

M W ----->

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

200

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 6
5 0 .6 0
5 0 .2 0

170

5 0 .0 0
4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 7
5 0 .6 0

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

10

4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 1
5 0 .6 0
5 0 .4 0
5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

180

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 2

5 0 .4 0

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .6 0

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SIMHADRI 1 & 2

600

50.80
50.60
50.40
50.20
50.00

300
49.80
49.60

200

49.40
100
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

16:01

M W ----->

400

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

500

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RYTPS 1
50.80

250

50.40
50.20

150
50.00
49.80
100
49.60
49.40

50

49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

0

16:01

M W ----->

200

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KTS 9
50.80

250

50.20
50.00
240
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

230

16:01

M W ----->

50.40

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

200

50.80

180

50.60

160

50.40
50.20

120
50.00
100
49.80
80
49.60

60

49.40

40

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

49.00

19:01

0

18:01

49.20

17:01

20

16:01

M W ----->

140

F R E Q IN H Z ----->

VTS 1 TO 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SHARAVATHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

160

5 0 .8 0

140

5 0 .6 0
5 0 .4 0
5 0 .2 0

100

5 0 .0 0
80
4 9 .8 0
60

4 9 .6 0

40

4 9 .4 0

2 0 :0 1

4 9 .0 0

1 9 :0 1

0

1 8 :0 1

4 9 .2 0

1 7 :0 1

20

1 6 :0 1

M W ----->

120

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

NAGJHERI 1

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

VARAHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

F R E Q IN H Z ----->

5 0 .6 0

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RTPS 1
5 0 .8 0

200

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

IDDUKKI 1
5 0 .8 0

140

5 0 .4 0
5 0 .2 0
80

5 0 .0 0

60

4 9 .8 0
4 9 .6 0

40
4 9 .4 0
20

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

100

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

120

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SABRIGIRI 1
5 0 .8 0

60

50

5 0 .2 0

40

5 0 .0 0
30
4 9 .8 0
4 9 .6 0

20

4 9 .4 0
10
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

5 0 .4 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

LOWER PERIYAR 1
5 0 .8 0

10

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

TTPS 2
50.80

220

50.40
50.20
50.00

200
49.80
49.60
190

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

180

16:01

M W ----->

210

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

MTPS 2
50.80

220

50.20
50.00
210
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

200

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NMTPS 1
50.80

230

50.60

50.20

210

50.00
200
49.80
49.60

190

49.40
180
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

170

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

220

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

ETS 5
50.80

80

50.20

70

50.00
49.80
49.60

60

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

50

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KUNDAH III - 1
50.80

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

50.40
50.20
50.00

30
49.80
49.60

20

49.40
10
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

F R E Q IN H Z ----->

50.60

40

16:01

M W ----->

50


Slide 9

ANALYSIS OF

FREE GOVERNOR MODE OF
OPERATION
LOAD CHANGE OVER AT
18:00HRS
ON 05-FEB-05

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 1
5 0 .8 0

220

5 0 .4 0
5 0 .2 0
5 0 .0 0

200
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

190

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

180

1 6 :0 1

M W ----->

210

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 2
5 0 .8 0

210

5 0 .4 0
5 0 .2 0
5 0 .0 0

190
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

180

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

170

1 6 :0 1

M W ----->

200

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 3
5 0 .8 0

200

5 0 .2 0

190

5 0 .0 0
4 9 .8 0
4 9 .6 0

180

4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

170

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 4

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

510

5 0 .6 0

490

5 0 .4 0

470

5 0 .2 0

450

5 0 .0 0

430

4 9 .8 0

410

4 9 .6 0

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

530

1 6 :0 1

M W ----->

NTPC - 5

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 1

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

150

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

160

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 2

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 3

5 0 .6 0
5 0 .4 0
5 0 .2 0
160

5 0 .0 0
4 9 .8 0

150

4 9 .6 0
4 9 .4 0

140

4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

130

1 6 :0 1

M W ----->

170

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 4
5 0 .6 0
5 0 .4 0

M W ----->

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

190

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 5
5 0 .6 0
190

M W ----->

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

200

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 6
5 0 .6 0
5 0 .2 0

170

5 0 .0 0
4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 7
5 0 .6 0

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

10

4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 1
5 0 .6 0
5 0 .4 0
5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

180

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 2

5 0 .4 0

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .6 0

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SIMHADRI 1 & 2

600

50.80
50.60
50.40
50.20
50.00

300
49.80
49.60

200

49.40
100
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

16:01

M W ----->

400

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

500

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RYTPS 1
50.80

250

50.40
50.20

150
50.00
49.80
100
49.60
49.40

50

49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

0

16:01

M W ----->

200

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KTS 9
50.80

250

50.20
50.00
240
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

230

16:01

M W ----->

50.40

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

200

50.80

180

50.60

160

50.40
50.20

120
50.00
100
49.80
80
49.60

60

49.40

40

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

49.00

19:01

0

18:01

49.20

17:01

20

16:01

M W ----->

140

F R E Q IN H Z ----->

VTS 1 TO 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SHARAVATHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

160

5 0 .8 0

140

5 0 .6 0
5 0 .4 0
5 0 .2 0

100

5 0 .0 0
80
4 9 .8 0
60

4 9 .6 0

40

4 9 .4 0

2 0 :0 1

4 9 .0 0

1 9 :0 1

0

1 8 :0 1

4 9 .2 0

1 7 :0 1

20

1 6 :0 1

M W ----->

120

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

NAGJHERI 1

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

VARAHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

F R E Q IN H Z ----->

5 0 .6 0

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RTPS 1
5 0 .8 0

200

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

IDDUKKI 1
5 0 .8 0

140

5 0 .4 0
5 0 .2 0
80

5 0 .0 0

60

4 9 .8 0
4 9 .6 0

40
4 9 .4 0
20

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

100

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

120

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SABRIGIRI 1
5 0 .8 0

60

50

5 0 .2 0

40

5 0 .0 0
30
4 9 .8 0
4 9 .6 0

20

4 9 .4 0
10
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

5 0 .4 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

LOWER PERIYAR 1
5 0 .8 0

10

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

TTPS 2
50.80

220

50.40
50.20
50.00

200
49.80
49.60
190

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

180

16:01

M W ----->

210

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

MTPS 2
50.80

220

50.20
50.00
210
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

200

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NMTPS 1
50.80

230

50.60

50.20

210

50.00
200
49.80
49.60

190

49.40
180
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

170

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

220

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

ETS 5
50.80

80

50.20

70

50.00
49.80
49.60

60

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

50

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KUNDAH III - 1
50.80

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

50.40
50.20
50.00

30
49.80
49.60

20

49.40
10
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

F R E Q IN H Z ----->

50.60

40

16:01

M W ----->

50


Slide 10

ANALYSIS OF

FREE GOVERNOR MODE OF
OPERATION
LOAD CHANGE OVER AT
18:00HRS
ON 05-FEB-05

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 1
5 0 .8 0

220

5 0 .4 0
5 0 .2 0
5 0 .0 0

200
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

190

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

180

1 6 :0 1

M W ----->

210

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 2
5 0 .8 0

210

5 0 .4 0
5 0 .2 0
5 0 .0 0

190
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

180

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

170

1 6 :0 1

M W ----->

200

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 3
5 0 .8 0

200

5 0 .2 0

190

5 0 .0 0
4 9 .8 0
4 9 .6 0

180

4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

170

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 4

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

510

5 0 .6 0

490

5 0 .4 0

470

5 0 .2 0

450

5 0 .0 0

430

4 9 .8 0

410

4 9 .6 0

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

530

1 6 :0 1

M W ----->

NTPC - 5

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 1

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

150

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

160

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 2

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 3

5 0 .6 0
5 0 .4 0
5 0 .2 0
160

5 0 .0 0
4 9 .8 0

150

4 9 .6 0
4 9 .4 0

140

4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

130

1 6 :0 1

M W ----->

170

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 4
5 0 .6 0
5 0 .4 0

M W ----->

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

190

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 5
5 0 .6 0
190

M W ----->

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

200

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 6
5 0 .6 0
5 0 .2 0

170

5 0 .0 0
4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 7
5 0 .6 0

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

10

4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 1
5 0 .6 0
5 0 .4 0
5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

180

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 2

5 0 .4 0

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .6 0

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SIMHADRI 1 & 2

600

50.80
50.60
50.40
50.20
50.00

300
49.80
49.60

200

49.40
100
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

16:01

M W ----->

400

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

500

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RYTPS 1
50.80

250

50.40
50.20

150
50.00
49.80
100
49.60
49.40

50

49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

0

16:01

M W ----->

200

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KTS 9
50.80

250

50.20
50.00
240
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

230

16:01

M W ----->

50.40

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

200

50.80

180

50.60

160

50.40
50.20

120
50.00
100
49.80
80
49.60

60

49.40

40

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

49.00

19:01

0

18:01

49.20

17:01

20

16:01

M W ----->

140

F R E Q IN H Z ----->

VTS 1 TO 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SHARAVATHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

160

5 0 .8 0

140

5 0 .6 0
5 0 .4 0
5 0 .2 0

100

5 0 .0 0
80
4 9 .8 0
60

4 9 .6 0

40

4 9 .4 0

2 0 :0 1

4 9 .0 0

1 9 :0 1

0

1 8 :0 1

4 9 .2 0

1 7 :0 1

20

1 6 :0 1

M W ----->

120

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

NAGJHERI 1

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

VARAHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

F R E Q IN H Z ----->

5 0 .6 0

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RTPS 1
5 0 .8 0

200

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

IDDUKKI 1
5 0 .8 0

140

5 0 .4 0
5 0 .2 0
80

5 0 .0 0

60

4 9 .8 0
4 9 .6 0

40
4 9 .4 0
20

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

100

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

120

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SABRIGIRI 1
5 0 .8 0

60

50

5 0 .2 0

40

5 0 .0 0
30
4 9 .8 0
4 9 .6 0

20

4 9 .4 0
10
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

5 0 .4 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

LOWER PERIYAR 1
5 0 .8 0

10

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

TTPS 2
50.80

220

50.40
50.20
50.00

200
49.80
49.60
190

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

180

16:01

M W ----->

210

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

MTPS 2
50.80

220

50.20
50.00
210
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

200

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NMTPS 1
50.80

230

50.60

50.20

210

50.00
200
49.80
49.60

190

49.40
180
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

170

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

220

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

ETS 5
50.80

80

50.20

70

50.00
49.80
49.60

60

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

50

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KUNDAH III - 1
50.80

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

50.40
50.20
50.00

30
49.80
49.60

20

49.40
10
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

F R E Q IN H Z ----->

50.60

40

16:01

M W ----->

50


Slide 11

ANALYSIS OF

FREE GOVERNOR MODE OF
OPERATION
LOAD CHANGE OVER AT
18:00HRS
ON 05-FEB-05

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 1
5 0 .8 0

220

5 0 .4 0
5 0 .2 0
5 0 .0 0

200
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

190

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

180

1 6 :0 1

M W ----->

210

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 2
5 0 .8 0

210

5 0 .4 0
5 0 .2 0
5 0 .0 0

190
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

180

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

170

1 6 :0 1

M W ----->

200

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 3
5 0 .8 0

200

5 0 .2 0

190

5 0 .0 0
4 9 .8 0
4 9 .6 0

180

4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

170

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 4

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

510

5 0 .6 0

490

5 0 .4 0

470

5 0 .2 0

450

5 0 .0 0

430

4 9 .8 0

410

4 9 .6 0

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

530

1 6 :0 1

M W ----->

NTPC - 5

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 1

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

150

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

160

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 2

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 3

5 0 .6 0
5 0 .4 0
5 0 .2 0
160

5 0 .0 0
4 9 .8 0

150

4 9 .6 0
4 9 .4 0

140

4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

130

1 6 :0 1

M W ----->

170

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 4
5 0 .6 0
5 0 .4 0

M W ----->

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

190

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 5
5 0 .6 0
190

M W ----->

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

200

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 6
5 0 .6 0
5 0 .2 0

170

5 0 .0 0
4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 7
5 0 .6 0

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

10

4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 1
5 0 .6 0
5 0 .4 0
5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

180

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 2

5 0 .4 0

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .6 0

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SIMHADRI 1 & 2

600

50.80
50.60
50.40
50.20
50.00

300
49.80
49.60

200

49.40
100
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

16:01

M W ----->

400

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

500

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RYTPS 1
50.80

250

50.40
50.20

150
50.00
49.80
100
49.60
49.40

50

49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

0

16:01

M W ----->

200

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KTS 9
50.80

250

50.20
50.00
240
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

230

16:01

M W ----->

50.40

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

200

50.80

180

50.60

160

50.40
50.20

120
50.00
100
49.80
80
49.60

60

49.40

40

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

49.00

19:01

0

18:01

49.20

17:01

20

16:01

M W ----->

140

F R E Q IN H Z ----->

VTS 1 TO 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SHARAVATHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

160

5 0 .8 0

140

5 0 .6 0
5 0 .4 0
5 0 .2 0

100

5 0 .0 0
80
4 9 .8 0
60

4 9 .6 0

40

4 9 .4 0

2 0 :0 1

4 9 .0 0

1 9 :0 1

0

1 8 :0 1

4 9 .2 0

1 7 :0 1

20

1 6 :0 1

M W ----->

120

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

NAGJHERI 1

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

VARAHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

F R E Q IN H Z ----->

5 0 .6 0

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RTPS 1
5 0 .8 0

200

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

IDDUKKI 1
5 0 .8 0

140

5 0 .4 0
5 0 .2 0
80

5 0 .0 0

60

4 9 .8 0
4 9 .6 0

40
4 9 .4 0
20

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

100

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

120

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SABRIGIRI 1
5 0 .8 0

60

50

5 0 .2 0

40

5 0 .0 0
30
4 9 .8 0
4 9 .6 0

20

4 9 .4 0
10
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

5 0 .4 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

LOWER PERIYAR 1
5 0 .8 0

10

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

TTPS 2
50.80

220

50.40
50.20
50.00

200
49.80
49.60
190

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

180

16:01

M W ----->

210

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

MTPS 2
50.80

220

50.20
50.00
210
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

200

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NMTPS 1
50.80

230

50.60

50.20

210

50.00
200
49.80
49.60

190

49.40
180
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

170

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

220

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

ETS 5
50.80

80

50.20

70

50.00
49.80
49.60

60

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

50

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KUNDAH III - 1
50.80

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

50.40
50.20
50.00

30
49.80
49.60

20

49.40
10
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

F R E Q IN H Z ----->

50.60

40

16:01

M W ----->

50


Slide 12

ANALYSIS OF

FREE GOVERNOR MODE OF
OPERATION
LOAD CHANGE OVER AT
18:00HRS
ON 05-FEB-05

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 1
5 0 .8 0

220

5 0 .4 0
5 0 .2 0
5 0 .0 0

200
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

190

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

180

1 6 :0 1

M W ----->

210

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 2
5 0 .8 0

210

5 0 .4 0
5 0 .2 0
5 0 .0 0

190
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

180

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

170

1 6 :0 1

M W ----->

200

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 3
5 0 .8 0

200

5 0 .2 0

190

5 0 .0 0
4 9 .8 0
4 9 .6 0

180

4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

170

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 4

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

510

5 0 .6 0

490

5 0 .4 0

470

5 0 .2 0

450

5 0 .0 0

430

4 9 .8 0

410

4 9 .6 0

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

530

1 6 :0 1

M W ----->

NTPC - 5

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 1

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

150

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

160

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 2

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 3

5 0 .6 0
5 0 .4 0
5 0 .2 0
160

5 0 .0 0
4 9 .8 0

150

4 9 .6 0
4 9 .4 0

140

4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

130

1 6 :0 1

M W ----->

170

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 4
5 0 .6 0
5 0 .4 0

M W ----->

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

190

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 5
5 0 .6 0
190

M W ----->

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

200

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 6
5 0 .6 0
5 0 .2 0

170

5 0 .0 0
4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 7
5 0 .6 0

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

10

4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 1
5 0 .6 0
5 0 .4 0
5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

180

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 2

5 0 .4 0

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .6 0

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SIMHADRI 1 & 2

600

50.80
50.60
50.40
50.20
50.00

300
49.80
49.60

200

49.40
100
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

16:01

M W ----->

400

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

500

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RYTPS 1
50.80

250

50.40
50.20

150
50.00
49.80
100
49.60
49.40

50

49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

0

16:01

M W ----->

200

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KTS 9
50.80

250

50.20
50.00
240
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

230

16:01

M W ----->

50.40

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

200

50.80

180

50.60

160

50.40
50.20

120
50.00
100
49.80
80
49.60

60

49.40

40

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

49.00

19:01

0

18:01

49.20

17:01

20

16:01

M W ----->

140

F R E Q IN H Z ----->

VTS 1 TO 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SHARAVATHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

160

5 0 .8 0

140

5 0 .6 0
5 0 .4 0
5 0 .2 0

100

5 0 .0 0
80
4 9 .8 0
60

4 9 .6 0

40

4 9 .4 0

2 0 :0 1

4 9 .0 0

1 9 :0 1

0

1 8 :0 1

4 9 .2 0

1 7 :0 1

20

1 6 :0 1

M W ----->

120

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

NAGJHERI 1

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

VARAHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

F R E Q IN H Z ----->

5 0 .6 0

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RTPS 1
5 0 .8 0

200

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

IDDUKKI 1
5 0 .8 0

140

5 0 .4 0
5 0 .2 0
80

5 0 .0 0

60

4 9 .8 0
4 9 .6 0

40
4 9 .4 0
20

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

100

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

120

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SABRIGIRI 1
5 0 .8 0

60

50

5 0 .2 0

40

5 0 .0 0
30
4 9 .8 0
4 9 .6 0

20

4 9 .4 0
10
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

5 0 .4 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

LOWER PERIYAR 1
5 0 .8 0

10

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

TTPS 2
50.80

220

50.40
50.20
50.00

200
49.80
49.60
190

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

180

16:01

M W ----->

210

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

MTPS 2
50.80

220

50.20
50.00
210
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

200

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NMTPS 1
50.80

230

50.60

50.20

210

50.00
200
49.80
49.60

190

49.40
180
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

170

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

220

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

ETS 5
50.80

80

50.20

70

50.00
49.80
49.60

60

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

50

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KUNDAH III - 1
50.80

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

50.40
50.20
50.00

30
49.80
49.60

20

49.40
10
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

F R E Q IN H Z ----->

50.60

40

16:01

M W ----->

50


Slide 13

ANALYSIS OF

FREE GOVERNOR MODE OF
OPERATION
LOAD CHANGE OVER AT
18:00HRS
ON 05-FEB-05

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 1
5 0 .8 0

220

5 0 .4 0
5 0 .2 0
5 0 .0 0

200
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

190

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

180

1 6 :0 1

M W ----->

210

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 2
5 0 .8 0

210

5 0 .4 0
5 0 .2 0
5 0 .0 0

190
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

180

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

170

1 6 :0 1

M W ----->

200

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 3
5 0 .8 0

200

5 0 .2 0

190

5 0 .0 0
4 9 .8 0
4 9 .6 0

180

4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

170

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 4

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

510

5 0 .6 0

490

5 0 .4 0

470

5 0 .2 0

450

5 0 .0 0

430

4 9 .8 0

410

4 9 .6 0

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

530

1 6 :0 1

M W ----->

NTPC - 5

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 1

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

150

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

160

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 2

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 3

5 0 .6 0
5 0 .4 0
5 0 .2 0
160

5 0 .0 0
4 9 .8 0

150

4 9 .6 0
4 9 .4 0

140

4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

130

1 6 :0 1

M W ----->

170

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 4
5 0 .6 0
5 0 .4 0

M W ----->

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

190

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 5
5 0 .6 0
190

M W ----->

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

200

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 6
5 0 .6 0
5 0 .2 0

170

5 0 .0 0
4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 7
5 0 .6 0

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

10

4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 1
5 0 .6 0
5 0 .4 0
5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

180

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 2

5 0 .4 0

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .6 0

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SIMHADRI 1 & 2

600

50.80
50.60
50.40
50.20
50.00

300
49.80
49.60

200

49.40
100
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

16:01

M W ----->

400

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

500

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RYTPS 1
50.80

250

50.40
50.20

150
50.00
49.80
100
49.60
49.40

50

49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

0

16:01

M W ----->

200

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KTS 9
50.80

250

50.20
50.00
240
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

230

16:01

M W ----->

50.40

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

200

50.80

180

50.60

160

50.40
50.20

120
50.00
100
49.80
80
49.60

60

49.40

40

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

49.00

19:01

0

18:01

49.20

17:01

20

16:01

M W ----->

140

F R E Q IN H Z ----->

VTS 1 TO 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SHARAVATHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

160

5 0 .8 0

140

5 0 .6 0
5 0 .4 0
5 0 .2 0

100

5 0 .0 0
80
4 9 .8 0
60

4 9 .6 0

40

4 9 .4 0

2 0 :0 1

4 9 .0 0

1 9 :0 1

0

1 8 :0 1

4 9 .2 0

1 7 :0 1

20

1 6 :0 1

M W ----->

120

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

NAGJHERI 1

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

VARAHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

F R E Q IN H Z ----->

5 0 .6 0

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RTPS 1
5 0 .8 0

200

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

IDDUKKI 1
5 0 .8 0

140

5 0 .4 0
5 0 .2 0
80

5 0 .0 0

60

4 9 .8 0
4 9 .6 0

40
4 9 .4 0
20

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

100

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

120

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SABRIGIRI 1
5 0 .8 0

60

50

5 0 .2 0

40

5 0 .0 0
30
4 9 .8 0
4 9 .6 0

20

4 9 .4 0
10
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

5 0 .4 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

LOWER PERIYAR 1
5 0 .8 0

10

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

TTPS 2
50.80

220

50.40
50.20
50.00

200
49.80
49.60
190

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

180

16:01

M W ----->

210

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

MTPS 2
50.80

220

50.20
50.00
210
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

200

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NMTPS 1
50.80

230

50.60

50.20

210

50.00
200
49.80
49.60

190

49.40
180
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

170

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

220

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

ETS 5
50.80

80

50.20

70

50.00
49.80
49.60

60

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

50

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KUNDAH III - 1
50.80

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

50.40
50.20
50.00

30
49.80
49.60

20

49.40
10
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

F R E Q IN H Z ----->

50.60

40

16:01

M W ----->

50


Slide 14

ANALYSIS OF

FREE GOVERNOR MODE OF
OPERATION
LOAD CHANGE OVER AT
18:00HRS
ON 05-FEB-05

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 1
5 0 .8 0

220

5 0 .4 0
5 0 .2 0
5 0 .0 0

200
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

190

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

180

1 6 :0 1

M W ----->

210

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 2
5 0 .8 0

210

5 0 .4 0
5 0 .2 0
5 0 .0 0

190
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

180

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

170

1 6 :0 1

M W ----->

200

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 3
5 0 .8 0

200

5 0 .2 0

190

5 0 .0 0
4 9 .8 0
4 9 .6 0

180

4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

170

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 4

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

510

5 0 .6 0

490

5 0 .4 0

470

5 0 .2 0

450

5 0 .0 0

430

4 9 .8 0

410

4 9 .6 0

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

530

1 6 :0 1

M W ----->

NTPC - 5

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 1

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

150

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

160

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 2

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 3

5 0 .6 0
5 0 .4 0
5 0 .2 0
160

5 0 .0 0
4 9 .8 0

150

4 9 .6 0
4 9 .4 0

140

4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

130

1 6 :0 1

M W ----->

170

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 4
5 0 .6 0
5 0 .4 0

M W ----->

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

190

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 5
5 0 .6 0
190

M W ----->

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

200

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 6
5 0 .6 0
5 0 .2 0

170

5 0 .0 0
4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 7
5 0 .6 0

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

10

4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 1
5 0 .6 0
5 0 .4 0
5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

180

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 2

5 0 .4 0

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .6 0

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SIMHADRI 1 & 2

600

50.80
50.60
50.40
50.20
50.00

300
49.80
49.60

200

49.40
100
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

16:01

M W ----->

400

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

500

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RYTPS 1
50.80

250

50.40
50.20

150
50.00
49.80
100
49.60
49.40

50

49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

0

16:01

M W ----->

200

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KTS 9
50.80

250

50.20
50.00
240
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

230

16:01

M W ----->

50.40

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

200

50.80

180

50.60

160

50.40
50.20

120
50.00
100
49.80
80
49.60

60

49.40

40

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

49.00

19:01

0

18:01

49.20

17:01

20

16:01

M W ----->

140

F R E Q IN H Z ----->

VTS 1 TO 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SHARAVATHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

160

5 0 .8 0

140

5 0 .6 0
5 0 .4 0
5 0 .2 0

100

5 0 .0 0
80
4 9 .8 0
60

4 9 .6 0

40

4 9 .4 0

2 0 :0 1

4 9 .0 0

1 9 :0 1

0

1 8 :0 1

4 9 .2 0

1 7 :0 1

20

1 6 :0 1

M W ----->

120

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

NAGJHERI 1

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

VARAHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

F R E Q IN H Z ----->

5 0 .6 0

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RTPS 1
5 0 .8 0

200

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

IDDUKKI 1
5 0 .8 0

140

5 0 .4 0
5 0 .2 0
80

5 0 .0 0

60

4 9 .8 0
4 9 .6 0

40
4 9 .4 0
20

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

100

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

120

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SABRIGIRI 1
5 0 .8 0

60

50

5 0 .2 0

40

5 0 .0 0
30
4 9 .8 0
4 9 .6 0

20

4 9 .4 0
10
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

5 0 .4 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

LOWER PERIYAR 1
5 0 .8 0

10

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

TTPS 2
50.80

220

50.40
50.20
50.00

200
49.80
49.60
190

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

180

16:01

M W ----->

210

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

MTPS 2
50.80

220

50.20
50.00
210
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

200

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NMTPS 1
50.80

230

50.60

50.20

210

50.00
200
49.80
49.60

190

49.40
180
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

170

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

220

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

ETS 5
50.80

80

50.20

70

50.00
49.80
49.60

60

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

50

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KUNDAH III - 1
50.80

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

50.40
50.20
50.00

30
49.80
49.60

20

49.40
10
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

F R E Q IN H Z ----->

50.60

40

16:01

M W ----->

50


Slide 15

ANALYSIS OF

FREE GOVERNOR MODE OF
OPERATION
LOAD CHANGE OVER AT
18:00HRS
ON 05-FEB-05

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 1
5 0 .8 0

220

5 0 .4 0
5 0 .2 0
5 0 .0 0

200
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

190

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

180

1 6 :0 1

M W ----->

210

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 2
5 0 .8 0

210

5 0 .4 0
5 0 .2 0
5 0 .0 0

190
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

180

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

170

1 6 :0 1

M W ----->

200

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 3
5 0 .8 0

200

5 0 .2 0

190

5 0 .0 0
4 9 .8 0
4 9 .6 0

180

4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

170

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 4

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

510

5 0 .6 0

490

5 0 .4 0

470

5 0 .2 0

450

5 0 .0 0

430

4 9 .8 0

410

4 9 .6 0

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

530

1 6 :0 1

M W ----->

NTPC - 5

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 1

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

150

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

160

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 2

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 3

5 0 .6 0
5 0 .4 0
5 0 .2 0
160

5 0 .0 0
4 9 .8 0

150

4 9 .6 0
4 9 .4 0

140

4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

130

1 6 :0 1

M W ----->

170

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 4
5 0 .6 0
5 0 .4 0

M W ----->

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

190

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 5
5 0 .6 0
190

M W ----->

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

200

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 6
5 0 .6 0
5 0 .2 0

170

5 0 .0 0
4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 7
5 0 .6 0

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

10

4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 1
5 0 .6 0
5 0 .4 0
5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

180

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 2

5 0 .4 0

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .6 0

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SIMHADRI 1 & 2

600

50.80
50.60
50.40
50.20
50.00

300
49.80
49.60

200

49.40
100
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

16:01

M W ----->

400

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

500

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RYTPS 1
50.80

250

50.40
50.20

150
50.00
49.80
100
49.60
49.40

50

49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

0

16:01

M W ----->

200

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KTS 9
50.80

250

50.20
50.00
240
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

230

16:01

M W ----->

50.40

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

200

50.80

180

50.60

160

50.40
50.20

120
50.00
100
49.80
80
49.60

60

49.40

40

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

49.00

19:01

0

18:01

49.20

17:01

20

16:01

M W ----->

140

F R E Q IN H Z ----->

VTS 1 TO 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SHARAVATHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

160

5 0 .8 0

140

5 0 .6 0
5 0 .4 0
5 0 .2 0

100

5 0 .0 0
80
4 9 .8 0
60

4 9 .6 0

40

4 9 .4 0

2 0 :0 1

4 9 .0 0

1 9 :0 1

0

1 8 :0 1

4 9 .2 0

1 7 :0 1

20

1 6 :0 1

M W ----->

120

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

NAGJHERI 1

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

VARAHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

F R E Q IN H Z ----->

5 0 .6 0

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RTPS 1
5 0 .8 0

200

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

IDDUKKI 1
5 0 .8 0

140

5 0 .4 0
5 0 .2 0
80

5 0 .0 0

60

4 9 .8 0
4 9 .6 0

40
4 9 .4 0
20

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

100

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

120

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SABRIGIRI 1
5 0 .8 0

60

50

5 0 .2 0

40

5 0 .0 0
30
4 9 .8 0
4 9 .6 0

20

4 9 .4 0
10
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

5 0 .4 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

LOWER PERIYAR 1
5 0 .8 0

10

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

TTPS 2
50.80

220

50.40
50.20
50.00

200
49.80
49.60
190

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

180

16:01

M W ----->

210

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

MTPS 2
50.80

220

50.20
50.00
210
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

200

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NMTPS 1
50.80

230

50.60

50.20

210

50.00
200
49.80
49.60

190

49.40
180
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

170

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

220

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

ETS 5
50.80

80

50.20

70

50.00
49.80
49.60

60

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

50

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KUNDAH III - 1
50.80

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

50.40
50.20
50.00

30
49.80
49.60

20

49.40
10
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

F R E Q IN H Z ----->

50.60

40

16:01

M W ----->

50


Slide 16

ANALYSIS OF

FREE GOVERNOR MODE OF
OPERATION
LOAD CHANGE OVER AT
18:00HRS
ON 05-FEB-05

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 1
5 0 .8 0

220

5 0 .4 0
5 0 .2 0
5 0 .0 0

200
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

190

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

180

1 6 :0 1

M W ----->

210

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 2
5 0 .8 0

210

5 0 .4 0
5 0 .2 0
5 0 .0 0

190
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

180

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

170

1 6 :0 1

M W ----->

200

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 3
5 0 .8 0

200

5 0 .2 0

190

5 0 .0 0
4 9 .8 0
4 9 .6 0

180

4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

170

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 4

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

510

5 0 .6 0

490

5 0 .4 0

470

5 0 .2 0

450

5 0 .0 0

430

4 9 .8 0

410

4 9 .6 0

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

530

1 6 :0 1

M W ----->

NTPC - 5

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 1

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

150

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

160

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 2

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 3

5 0 .6 0
5 0 .4 0
5 0 .2 0
160

5 0 .0 0
4 9 .8 0

150

4 9 .6 0
4 9 .4 0

140

4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

130

1 6 :0 1

M W ----->

170

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 4
5 0 .6 0
5 0 .4 0

M W ----->

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

190

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 5
5 0 .6 0
190

M W ----->

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

200

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 6
5 0 .6 0
5 0 .2 0

170

5 0 .0 0
4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 7
5 0 .6 0

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

10

4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 1
5 0 .6 0
5 0 .4 0
5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

180

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 2

5 0 .4 0

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .6 0

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SIMHADRI 1 & 2

600

50.80
50.60
50.40
50.20
50.00

300
49.80
49.60

200

49.40
100
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

16:01

M W ----->

400

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

500

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RYTPS 1
50.80

250

50.40
50.20

150
50.00
49.80
100
49.60
49.40

50

49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

0

16:01

M W ----->

200

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KTS 9
50.80

250

50.20
50.00
240
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

230

16:01

M W ----->

50.40

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

200

50.80

180

50.60

160

50.40
50.20

120
50.00
100
49.80
80
49.60

60

49.40

40

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

49.00

19:01

0

18:01

49.20

17:01

20

16:01

M W ----->

140

F R E Q IN H Z ----->

VTS 1 TO 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SHARAVATHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

160

5 0 .8 0

140

5 0 .6 0
5 0 .4 0
5 0 .2 0

100

5 0 .0 0
80
4 9 .8 0
60

4 9 .6 0

40

4 9 .4 0

2 0 :0 1

4 9 .0 0

1 9 :0 1

0

1 8 :0 1

4 9 .2 0

1 7 :0 1

20

1 6 :0 1

M W ----->

120

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

NAGJHERI 1

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

VARAHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

F R E Q IN H Z ----->

5 0 .6 0

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RTPS 1
5 0 .8 0

200

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

IDDUKKI 1
5 0 .8 0

140

5 0 .4 0
5 0 .2 0
80

5 0 .0 0

60

4 9 .8 0
4 9 .6 0

40
4 9 .4 0
20

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

100

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

120

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SABRIGIRI 1
5 0 .8 0

60

50

5 0 .2 0

40

5 0 .0 0
30
4 9 .8 0
4 9 .6 0

20

4 9 .4 0
10
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

5 0 .4 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

LOWER PERIYAR 1
5 0 .8 0

10

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

TTPS 2
50.80

220

50.40
50.20
50.00

200
49.80
49.60
190

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

180

16:01

M W ----->

210

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

MTPS 2
50.80

220

50.20
50.00
210
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

200

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NMTPS 1
50.80

230

50.60

50.20

210

50.00
200
49.80
49.60

190

49.40
180
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

170

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

220

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

ETS 5
50.80

80

50.20

70

50.00
49.80
49.60

60

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

50

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KUNDAH III - 1
50.80

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

50.40
50.20
50.00

30
49.80
49.60

20

49.40
10
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

F R E Q IN H Z ----->

50.60

40

16:01

M W ----->

50


Slide 17

ANALYSIS OF

FREE GOVERNOR MODE OF
OPERATION
LOAD CHANGE OVER AT
18:00HRS
ON 05-FEB-05

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 1
5 0 .8 0

220

5 0 .4 0
5 0 .2 0
5 0 .0 0

200
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

190

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

180

1 6 :0 1

M W ----->

210

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 2
5 0 .8 0

210

5 0 .4 0
5 0 .2 0
5 0 .0 0

190
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

180

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

170

1 6 :0 1

M W ----->

200

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 3
5 0 .8 0

200

5 0 .2 0

190

5 0 .0 0
4 9 .8 0
4 9 .6 0

180

4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

170

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 4

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

510

5 0 .6 0

490

5 0 .4 0

470

5 0 .2 0

450

5 0 .0 0

430

4 9 .8 0

410

4 9 .6 0

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

530

1 6 :0 1

M W ----->

NTPC - 5

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 1

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

150

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

160

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 2

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 3

5 0 .6 0
5 0 .4 0
5 0 .2 0
160

5 0 .0 0
4 9 .8 0

150

4 9 .6 0
4 9 .4 0

140

4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

130

1 6 :0 1

M W ----->

170

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 4
5 0 .6 0
5 0 .4 0

M W ----->

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

190

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 5
5 0 .6 0
190

M W ----->

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

200

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 6
5 0 .6 0
5 0 .2 0

170

5 0 .0 0
4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 7
5 0 .6 0

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

10

4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 1
5 0 .6 0
5 0 .4 0
5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

180

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 2

5 0 .4 0

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .6 0

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SIMHADRI 1 & 2

600

50.80
50.60
50.40
50.20
50.00

300
49.80
49.60

200

49.40
100
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

16:01

M W ----->

400

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

500

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RYTPS 1
50.80

250

50.40
50.20

150
50.00
49.80
100
49.60
49.40

50

49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

0

16:01

M W ----->

200

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KTS 9
50.80

250

50.20
50.00
240
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

230

16:01

M W ----->

50.40

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

200

50.80

180

50.60

160

50.40
50.20

120
50.00
100
49.80
80
49.60

60

49.40

40

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

49.00

19:01

0

18:01

49.20

17:01

20

16:01

M W ----->

140

F R E Q IN H Z ----->

VTS 1 TO 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SHARAVATHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

160

5 0 .8 0

140

5 0 .6 0
5 0 .4 0
5 0 .2 0

100

5 0 .0 0
80
4 9 .8 0
60

4 9 .6 0

40

4 9 .4 0

2 0 :0 1

4 9 .0 0

1 9 :0 1

0

1 8 :0 1

4 9 .2 0

1 7 :0 1

20

1 6 :0 1

M W ----->

120

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

NAGJHERI 1

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

VARAHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

F R E Q IN H Z ----->

5 0 .6 0

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RTPS 1
5 0 .8 0

200

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

IDDUKKI 1
5 0 .8 0

140

5 0 .4 0
5 0 .2 0
80

5 0 .0 0

60

4 9 .8 0
4 9 .6 0

40
4 9 .4 0
20

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

100

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

120

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SABRIGIRI 1
5 0 .8 0

60

50

5 0 .2 0

40

5 0 .0 0
30
4 9 .8 0
4 9 .6 0

20

4 9 .4 0
10
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

5 0 .4 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

LOWER PERIYAR 1
5 0 .8 0

10

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

TTPS 2
50.80

220

50.40
50.20
50.00

200
49.80
49.60
190

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

180

16:01

M W ----->

210

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

MTPS 2
50.80

220

50.20
50.00
210
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

200

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NMTPS 1
50.80

230

50.60

50.20

210

50.00
200
49.80
49.60

190

49.40
180
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

170

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

220

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

ETS 5
50.80

80

50.20

70

50.00
49.80
49.60

60

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

50

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KUNDAH III - 1
50.80

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

50.40
50.20
50.00

30
49.80
49.60

20

49.40
10
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

F R E Q IN H Z ----->

50.60

40

16:01

M W ----->

50


Slide 18

ANALYSIS OF

FREE GOVERNOR MODE OF
OPERATION
LOAD CHANGE OVER AT
18:00HRS
ON 05-FEB-05

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 1
5 0 .8 0

220

5 0 .4 0
5 0 .2 0
5 0 .0 0

200
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

190

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

180

1 6 :0 1

M W ----->

210

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 2
5 0 .8 0

210

5 0 .4 0
5 0 .2 0
5 0 .0 0

190
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

180

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

170

1 6 :0 1

M W ----->

200

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 3
5 0 .8 0

200

5 0 .2 0

190

5 0 .0 0
4 9 .8 0
4 9 .6 0

180

4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

170

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 4

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

510

5 0 .6 0

490

5 0 .4 0

470

5 0 .2 0

450

5 0 .0 0

430

4 9 .8 0

410

4 9 .6 0

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

530

1 6 :0 1

M W ----->

NTPC - 5

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 1

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

150

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

160

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 2

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 3

5 0 .6 0
5 0 .4 0
5 0 .2 0
160

5 0 .0 0
4 9 .8 0

150

4 9 .6 0
4 9 .4 0

140

4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

130

1 6 :0 1

M W ----->

170

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 4
5 0 .6 0
5 0 .4 0

M W ----->

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

190

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 5
5 0 .6 0
190

M W ----->

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

200

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 6
5 0 .6 0
5 0 .2 0

170

5 0 .0 0
4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 7
5 0 .6 0

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

10

4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 1
5 0 .6 0
5 0 .4 0
5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

180

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 2

5 0 .4 0

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .6 0

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SIMHADRI 1 & 2

600

50.80
50.60
50.40
50.20
50.00

300
49.80
49.60

200

49.40
100
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

16:01

M W ----->

400

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

500

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RYTPS 1
50.80

250

50.40
50.20

150
50.00
49.80
100
49.60
49.40

50

49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

0

16:01

M W ----->

200

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KTS 9
50.80

250

50.20
50.00
240
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

230

16:01

M W ----->

50.40

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

200

50.80

180

50.60

160

50.40
50.20

120
50.00
100
49.80
80
49.60

60

49.40

40

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

49.00

19:01

0

18:01

49.20

17:01

20

16:01

M W ----->

140

F R E Q IN H Z ----->

VTS 1 TO 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SHARAVATHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

160

5 0 .8 0

140

5 0 .6 0
5 0 .4 0
5 0 .2 0

100

5 0 .0 0
80
4 9 .8 0
60

4 9 .6 0

40

4 9 .4 0

2 0 :0 1

4 9 .0 0

1 9 :0 1

0

1 8 :0 1

4 9 .2 0

1 7 :0 1

20

1 6 :0 1

M W ----->

120

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

NAGJHERI 1

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

VARAHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

F R E Q IN H Z ----->

5 0 .6 0

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RTPS 1
5 0 .8 0

200

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

IDDUKKI 1
5 0 .8 0

140

5 0 .4 0
5 0 .2 0
80

5 0 .0 0

60

4 9 .8 0
4 9 .6 0

40
4 9 .4 0
20

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

100

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

120

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SABRIGIRI 1
5 0 .8 0

60

50

5 0 .2 0

40

5 0 .0 0
30
4 9 .8 0
4 9 .6 0

20

4 9 .4 0
10
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

5 0 .4 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

LOWER PERIYAR 1
5 0 .8 0

10

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

TTPS 2
50.80

220

50.40
50.20
50.00

200
49.80
49.60
190

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

180

16:01

M W ----->

210

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

MTPS 2
50.80

220

50.20
50.00
210
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

200

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NMTPS 1
50.80

230

50.60

50.20

210

50.00
200
49.80
49.60

190

49.40
180
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

170

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

220

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

ETS 5
50.80

80

50.20

70

50.00
49.80
49.60

60

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

50

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KUNDAH III - 1
50.80

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

50.40
50.20
50.00

30
49.80
49.60

20

49.40
10
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

F R E Q IN H Z ----->

50.60

40

16:01

M W ----->

50


Slide 19

ANALYSIS OF

FREE GOVERNOR MODE OF
OPERATION
LOAD CHANGE OVER AT
18:00HRS
ON 05-FEB-05

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 1
5 0 .8 0

220

5 0 .4 0
5 0 .2 0
5 0 .0 0

200
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

190

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

180

1 6 :0 1

M W ----->

210

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 2
5 0 .8 0

210

5 0 .4 0
5 0 .2 0
5 0 .0 0

190
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

180

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

170

1 6 :0 1

M W ----->

200

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 3
5 0 .8 0

200

5 0 .2 0

190

5 0 .0 0
4 9 .8 0
4 9 .6 0

180

4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

170

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 4

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

510

5 0 .6 0

490

5 0 .4 0

470

5 0 .2 0

450

5 0 .0 0

430

4 9 .8 0

410

4 9 .6 0

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

530

1 6 :0 1

M W ----->

NTPC - 5

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 1

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

150

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

160

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 2

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 3

5 0 .6 0
5 0 .4 0
5 0 .2 0
160

5 0 .0 0
4 9 .8 0

150

4 9 .6 0
4 9 .4 0

140

4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

130

1 6 :0 1

M W ----->

170

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 4
5 0 .6 0
5 0 .4 0

M W ----->

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

190

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 5
5 0 .6 0
190

M W ----->

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

200

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 6
5 0 .6 0
5 0 .2 0

170

5 0 .0 0
4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 7
5 0 .6 0

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

10

4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 1
5 0 .6 0
5 0 .4 0
5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

180

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 2

5 0 .4 0

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .6 0

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SIMHADRI 1 & 2

600

50.80
50.60
50.40
50.20
50.00

300
49.80
49.60

200

49.40
100
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

16:01

M W ----->

400

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

500

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RYTPS 1
50.80

250

50.40
50.20

150
50.00
49.80
100
49.60
49.40

50

49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

0

16:01

M W ----->

200

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KTS 9
50.80

250

50.20
50.00
240
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

230

16:01

M W ----->

50.40

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

200

50.80

180

50.60

160

50.40
50.20

120
50.00
100
49.80
80
49.60

60

49.40

40

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

49.00

19:01

0

18:01

49.20

17:01

20

16:01

M W ----->

140

F R E Q IN H Z ----->

VTS 1 TO 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SHARAVATHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

160

5 0 .8 0

140

5 0 .6 0
5 0 .4 0
5 0 .2 0

100

5 0 .0 0
80
4 9 .8 0
60

4 9 .6 0

40

4 9 .4 0

2 0 :0 1

4 9 .0 0

1 9 :0 1

0

1 8 :0 1

4 9 .2 0

1 7 :0 1

20

1 6 :0 1

M W ----->

120

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

NAGJHERI 1

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

VARAHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

F R E Q IN H Z ----->

5 0 .6 0

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RTPS 1
5 0 .8 0

200

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

IDDUKKI 1
5 0 .8 0

140

5 0 .4 0
5 0 .2 0
80

5 0 .0 0

60

4 9 .8 0
4 9 .6 0

40
4 9 .4 0
20

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

100

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

120

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SABRIGIRI 1
5 0 .8 0

60

50

5 0 .2 0

40

5 0 .0 0
30
4 9 .8 0
4 9 .6 0

20

4 9 .4 0
10
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

5 0 .4 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

LOWER PERIYAR 1
5 0 .8 0

10

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

TTPS 2
50.80

220

50.40
50.20
50.00

200
49.80
49.60
190

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

180

16:01

M W ----->

210

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

MTPS 2
50.80

220

50.20
50.00
210
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

200

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NMTPS 1
50.80

230

50.60

50.20

210

50.00
200
49.80
49.60

190

49.40
180
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

170

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

220

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

ETS 5
50.80

80

50.20

70

50.00
49.80
49.60

60

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

50

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KUNDAH III - 1
50.80

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

50.40
50.20
50.00

30
49.80
49.60

20

49.40
10
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

F R E Q IN H Z ----->

50.60

40

16:01

M W ----->

50


Slide 20

ANALYSIS OF

FREE GOVERNOR MODE OF
OPERATION
LOAD CHANGE OVER AT
18:00HRS
ON 05-FEB-05

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 1
5 0 .8 0

220

5 0 .4 0
5 0 .2 0
5 0 .0 0

200
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

190

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

180

1 6 :0 1

M W ----->

210

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 2
5 0 .8 0

210

5 0 .4 0
5 0 .2 0
5 0 .0 0

190
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

180

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

170

1 6 :0 1

M W ----->

200

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 3
5 0 .8 0

200

5 0 .2 0

190

5 0 .0 0
4 9 .8 0
4 9 .6 0

180

4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

170

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 4

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

510

5 0 .6 0

490

5 0 .4 0

470

5 0 .2 0

450

5 0 .0 0

430

4 9 .8 0

410

4 9 .6 0

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

530

1 6 :0 1

M W ----->

NTPC - 5

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 1

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

150

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

160

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 2

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 3

5 0 .6 0
5 0 .4 0
5 0 .2 0
160

5 0 .0 0
4 9 .8 0

150

4 9 .6 0
4 9 .4 0

140

4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

130

1 6 :0 1

M W ----->

170

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 4
5 0 .6 0
5 0 .4 0

M W ----->

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

190

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 5
5 0 .6 0
190

M W ----->

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

200

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 6
5 0 .6 0
5 0 .2 0

170

5 0 .0 0
4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 7
5 0 .6 0

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

10

4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 1
5 0 .6 0
5 0 .4 0
5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

180

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 2

5 0 .4 0

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .6 0

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SIMHADRI 1 & 2

600

50.80
50.60
50.40
50.20
50.00

300
49.80
49.60

200

49.40
100
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

16:01

M W ----->

400

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

500

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RYTPS 1
50.80

250

50.40
50.20

150
50.00
49.80
100
49.60
49.40

50

49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

0

16:01

M W ----->

200

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KTS 9
50.80

250

50.20
50.00
240
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

230

16:01

M W ----->

50.40

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

200

50.80

180

50.60

160

50.40
50.20

120
50.00
100
49.80
80
49.60

60

49.40

40

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

49.00

19:01

0

18:01

49.20

17:01

20

16:01

M W ----->

140

F R E Q IN H Z ----->

VTS 1 TO 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SHARAVATHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

160

5 0 .8 0

140

5 0 .6 0
5 0 .4 0
5 0 .2 0

100

5 0 .0 0
80
4 9 .8 0
60

4 9 .6 0

40

4 9 .4 0

2 0 :0 1

4 9 .0 0

1 9 :0 1

0

1 8 :0 1

4 9 .2 0

1 7 :0 1

20

1 6 :0 1

M W ----->

120

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

NAGJHERI 1

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

VARAHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

F R E Q IN H Z ----->

5 0 .6 0

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RTPS 1
5 0 .8 0

200

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

IDDUKKI 1
5 0 .8 0

140

5 0 .4 0
5 0 .2 0
80

5 0 .0 0

60

4 9 .8 0
4 9 .6 0

40
4 9 .4 0
20

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

100

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

120

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SABRIGIRI 1
5 0 .8 0

60

50

5 0 .2 0

40

5 0 .0 0
30
4 9 .8 0
4 9 .6 0

20

4 9 .4 0
10
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

5 0 .4 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

LOWER PERIYAR 1
5 0 .8 0

10

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

TTPS 2
50.80

220

50.40
50.20
50.00

200
49.80
49.60
190

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

180

16:01

M W ----->

210

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

MTPS 2
50.80

220

50.20
50.00
210
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

200

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NMTPS 1
50.80

230

50.60

50.20

210

50.00
200
49.80
49.60

190

49.40
180
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

170

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

220

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

ETS 5
50.80

80

50.20

70

50.00
49.80
49.60

60

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

50

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KUNDAH III - 1
50.80

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

50.40
50.20
50.00

30
49.80
49.60

20

49.40
10
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

F R E Q IN H Z ----->

50.60

40

16:01

M W ----->

50


Slide 21

ANALYSIS OF

FREE GOVERNOR MODE OF
OPERATION
LOAD CHANGE OVER AT
18:00HRS
ON 05-FEB-05

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 1
5 0 .8 0

220

5 0 .4 0
5 0 .2 0
5 0 .0 0

200
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

190

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

180

1 6 :0 1

M W ----->

210

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 2
5 0 .8 0

210

5 0 .4 0
5 0 .2 0
5 0 .0 0

190
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

180

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

170

1 6 :0 1

M W ----->

200

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 3
5 0 .8 0

200

5 0 .2 0

190

5 0 .0 0
4 9 .8 0
4 9 .6 0

180

4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

170

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 4

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

510

5 0 .6 0

490

5 0 .4 0

470

5 0 .2 0

450

5 0 .0 0

430

4 9 .8 0

410

4 9 .6 0

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

530

1 6 :0 1

M W ----->

NTPC - 5

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 1

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

150

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

160

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 2

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 3

5 0 .6 0
5 0 .4 0
5 0 .2 0
160

5 0 .0 0
4 9 .8 0

150

4 9 .6 0
4 9 .4 0

140

4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

130

1 6 :0 1

M W ----->

170

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 4
5 0 .6 0
5 0 .4 0

M W ----->

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

190

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 5
5 0 .6 0
190

M W ----->

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

200

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 6
5 0 .6 0
5 0 .2 0

170

5 0 .0 0
4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 7
5 0 .6 0

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

10

4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 1
5 0 .6 0
5 0 .4 0
5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

180

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 2

5 0 .4 0

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .6 0

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SIMHADRI 1 & 2

600

50.80
50.60
50.40
50.20
50.00

300
49.80
49.60

200

49.40
100
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

16:01

M W ----->

400

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

500

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RYTPS 1
50.80

250

50.40
50.20

150
50.00
49.80
100
49.60
49.40

50

49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

0

16:01

M W ----->

200

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KTS 9
50.80

250

50.20
50.00
240
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

230

16:01

M W ----->

50.40

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

200

50.80

180

50.60

160

50.40
50.20

120
50.00
100
49.80
80
49.60

60

49.40

40

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

49.00

19:01

0

18:01

49.20

17:01

20

16:01

M W ----->

140

F R E Q IN H Z ----->

VTS 1 TO 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SHARAVATHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

160

5 0 .8 0

140

5 0 .6 0
5 0 .4 0
5 0 .2 0

100

5 0 .0 0
80
4 9 .8 0
60

4 9 .6 0

40

4 9 .4 0

2 0 :0 1

4 9 .0 0

1 9 :0 1

0

1 8 :0 1

4 9 .2 0

1 7 :0 1

20

1 6 :0 1

M W ----->

120

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

NAGJHERI 1

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

VARAHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

F R E Q IN H Z ----->

5 0 .6 0

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RTPS 1
5 0 .8 0

200

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

IDDUKKI 1
5 0 .8 0

140

5 0 .4 0
5 0 .2 0
80

5 0 .0 0

60

4 9 .8 0
4 9 .6 0

40
4 9 .4 0
20

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

100

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

120

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SABRIGIRI 1
5 0 .8 0

60

50

5 0 .2 0

40

5 0 .0 0
30
4 9 .8 0
4 9 .6 0

20

4 9 .4 0
10
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

5 0 .4 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

LOWER PERIYAR 1
5 0 .8 0

10

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

TTPS 2
50.80

220

50.40
50.20
50.00

200
49.80
49.60
190

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

180

16:01

M W ----->

210

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

MTPS 2
50.80

220

50.20
50.00
210
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

200

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NMTPS 1
50.80

230

50.60

50.20

210

50.00
200
49.80
49.60

190

49.40
180
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

170

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

220

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

ETS 5
50.80

80

50.20

70

50.00
49.80
49.60

60

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

50

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KUNDAH III - 1
50.80

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

50.40
50.20
50.00

30
49.80
49.60

20

49.40
10
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

F R E Q IN H Z ----->

50.60

40

16:01

M W ----->

50


Slide 22

ANALYSIS OF

FREE GOVERNOR MODE OF
OPERATION
LOAD CHANGE OVER AT
18:00HRS
ON 05-FEB-05

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 1
5 0 .8 0

220

5 0 .4 0
5 0 .2 0
5 0 .0 0

200
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

190

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

180

1 6 :0 1

M W ----->

210

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 2
5 0 .8 0

210

5 0 .4 0
5 0 .2 0
5 0 .0 0

190
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

180

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

170

1 6 :0 1

M W ----->

200

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 3
5 0 .8 0

200

5 0 .2 0

190

5 0 .0 0
4 9 .8 0
4 9 .6 0

180

4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

170

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 4

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

510

5 0 .6 0

490

5 0 .4 0

470

5 0 .2 0

450

5 0 .0 0

430

4 9 .8 0

410

4 9 .6 0

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

530

1 6 :0 1

M W ----->

NTPC - 5

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 1

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

150

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

160

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 2

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 3

5 0 .6 0
5 0 .4 0
5 0 .2 0
160

5 0 .0 0
4 9 .8 0

150

4 9 .6 0
4 9 .4 0

140

4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

130

1 6 :0 1

M W ----->

170

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 4
5 0 .6 0
5 0 .4 0

M W ----->

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

190

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 5
5 0 .6 0
190

M W ----->

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

200

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 6
5 0 .6 0
5 0 .2 0

170

5 0 .0 0
4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 7
5 0 .6 0

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

10

4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 1
5 0 .6 0
5 0 .4 0
5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

180

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 2

5 0 .4 0

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .6 0

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SIMHADRI 1 & 2

600

50.80
50.60
50.40
50.20
50.00

300
49.80
49.60

200

49.40
100
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

16:01

M W ----->

400

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

500

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RYTPS 1
50.80

250

50.40
50.20

150
50.00
49.80
100
49.60
49.40

50

49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

0

16:01

M W ----->

200

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KTS 9
50.80

250

50.20
50.00
240
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

230

16:01

M W ----->

50.40

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

200

50.80

180

50.60

160

50.40
50.20

120
50.00
100
49.80
80
49.60

60

49.40

40

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

49.00

19:01

0

18:01

49.20

17:01

20

16:01

M W ----->

140

F R E Q IN H Z ----->

VTS 1 TO 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SHARAVATHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

160

5 0 .8 0

140

5 0 .6 0
5 0 .4 0
5 0 .2 0

100

5 0 .0 0
80
4 9 .8 0
60

4 9 .6 0

40

4 9 .4 0

2 0 :0 1

4 9 .0 0

1 9 :0 1

0

1 8 :0 1

4 9 .2 0

1 7 :0 1

20

1 6 :0 1

M W ----->

120

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

NAGJHERI 1

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

VARAHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

F R E Q IN H Z ----->

5 0 .6 0

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RTPS 1
5 0 .8 0

200

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

IDDUKKI 1
5 0 .8 0

140

5 0 .4 0
5 0 .2 0
80

5 0 .0 0

60

4 9 .8 0
4 9 .6 0

40
4 9 .4 0
20

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

100

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

120

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SABRIGIRI 1
5 0 .8 0

60

50

5 0 .2 0

40

5 0 .0 0
30
4 9 .8 0
4 9 .6 0

20

4 9 .4 0
10
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

5 0 .4 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

LOWER PERIYAR 1
5 0 .8 0

10

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

TTPS 2
50.80

220

50.40
50.20
50.00

200
49.80
49.60
190

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

180

16:01

M W ----->

210

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

MTPS 2
50.80

220

50.20
50.00
210
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

200

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NMTPS 1
50.80

230

50.60

50.20

210

50.00
200
49.80
49.60

190

49.40
180
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

170

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

220

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

ETS 5
50.80

80

50.20

70

50.00
49.80
49.60

60

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

50

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KUNDAH III - 1
50.80

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

50.40
50.20
50.00

30
49.80
49.60

20

49.40
10
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

F R E Q IN H Z ----->

50.60

40

16:01

M W ----->

50


Slide 23

ANALYSIS OF

FREE GOVERNOR MODE OF
OPERATION
LOAD CHANGE OVER AT
18:00HRS
ON 05-FEB-05

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 1
5 0 .8 0

220

5 0 .4 0
5 0 .2 0
5 0 .0 0

200
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

190

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

180

1 6 :0 1

M W ----->

210

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 2
5 0 .8 0

210

5 0 .4 0
5 0 .2 0
5 0 .0 0

190
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

180

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

170

1 6 :0 1

M W ----->

200

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 3
5 0 .8 0

200

5 0 .2 0

190

5 0 .0 0
4 9 .8 0
4 9 .6 0

180

4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

170

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 4

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

510

5 0 .6 0

490

5 0 .4 0

470

5 0 .2 0

450

5 0 .0 0

430

4 9 .8 0

410

4 9 .6 0

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

530

1 6 :0 1

M W ----->

NTPC - 5

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 1

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

150

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

160

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 2

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 3

5 0 .6 0
5 0 .4 0
5 0 .2 0
160

5 0 .0 0
4 9 .8 0

150

4 9 .6 0
4 9 .4 0

140

4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

130

1 6 :0 1

M W ----->

170

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 4
5 0 .6 0
5 0 .4 0

M W ----->

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

190

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 5
5 0 .6 0
190

M W ----->

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

200

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 6
5 0 .6 0
5 0 .2 0

170

5 0 .0 0
4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 7
5 0 .6 0

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

10

4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 1
5 0 .6 0
5 0 .4 0
5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

180

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 2

5 0 .4 0

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .6 0

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SIMHADRI 1 & 2

600

50.80
50.60
50.40
50.20
50.00

300
49.80
49.60

200

49.40
100
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

16:01

M W ----->

400

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

500

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RYTPS 1
50.80

250

50.40
50.20

150
50.00
49.80
100
49.60
49.40

50

49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

0

16:01

M W ----->

200

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KTS 9
50.80

250

50.20
50.00
240
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

230

16:01

M W ----->

50.40

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

200

50.80

180

50.60

160

50.40
50.20

120
50.00
100
49.80
80
49.60

60

49.40

40

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

49.00

19:01

0

18:01

49.20

17:01

20

16:01

M W ----->

140

F R E Q IN H Z ----->

VTS 1 TO 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SHARAVATHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

160

5 0 .8 0

140

5 0 .6 0
5 0 .4 0
5 0 .2 0

100

5 0 .0 0
80
4 9 .8 0
60

4 9 .6 0

40

4 9 .4 0

2 0 :0 1

4 9 .0 0

1 9 :0 1

0

1 8 :0 1

4 9 .2 0

1 7 :0 1

20

1 6 :0 1

M W ----->

120

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

NAGJHERI 1

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

VARAHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

F R E Q IN H Z ----->

5 0 .6 0

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RTPS 1
5 0 .8 0

200

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

IDDUKKI 1
5 0 .8 0

140

5 0 .4 0
5 0 .2 0
80

5 0 .0 0

60

4 9 .8 0
4 9 .6 0

40
4 9 .4 0
20

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

100

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

120

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SABRIGIRI 1
5 0 .8 0

60

50

5 0 .2 0

40

5 0 .0 0
30
4 9 .8 0
4 9 .6 0

20

4 9 .4 0
10
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

5 0 .4 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

LOWER PERIYAR 1
5 0 .8 0

10

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

TTPS 2
50.80

220

50.40
50.20
50.00

200
49.80
49.60
190

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

180

16:01

M W ----->

210

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

MTPS 2
50.80

220

50.20
50.00
210
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

200

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NMTPS 1
50.80

230

50.60

50.20

210

50.00
200
49.80
49.60

190

49.40
180
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

170

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

220

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

ETS 5
50.80

80

50.20

70

50.00
49.80
49.60

60

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

50

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KUNDAH III - 1
50.80

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

50.40
50.20
50.00

30
49.80
49.60

20

49.40
10
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

F R E Q IN H Z ----->

50.60

40

16:01

M W ----->

50


Slide 24

ANALYSIS OF

FREE GOVERNOR MODE OF
OPERATION
LOAD CHANGE OVER AT
18:00HRS
ON 05-FEB-05

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 1
5 0 .8 0

220

5 0 .4 0
5 0 .2 0
5 0 .0 0

200
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

190

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

180

1 6 :0 1

M W ----->

210

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 2
5 0 .8 0

210

5 0 .4 0
5 0 .2 0
5 0 .0 0

190
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

180

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

170

1 6 :0 1

M W ----->

200

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 3
5 0 .8 0

200

5 0 .2 0

190

5 0 .0 0
4 9 .8 0
4 9 .6 0

180

4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

170

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 4

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

510

5 0 .6 0

490

5 0 .4 0

470

5 0 .2 0

450

5 0 .0 0

430

4 9 .8 0

410

4 9 .6 0

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

530

1 6 :0 1

M W ----->

NTPC - 5

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 1

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

150

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

160

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 2

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 3

5 0 .6 0
5 0 .4 0
5 0 .2 0
160

5 0 .0 0
4 9 .8 0

150

4 9 .6 0
4 9 .4 0

140

4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

130

1 6 :0 1

M W ----->

170

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 4
5 0 .6 0
5 0 .4 0

M W ----->

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

190

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 5
5 0 .6 0
190

M W ----->

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

200

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 6
5 0 .6 0
5 0 .2 0

170

5 0 .0 0
4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 7
5 0 .6 0

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

10

4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 1
5 0 .6 0
5 0 .4 0
5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

180

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 2

5 0 .4 0

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .6 0

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SIMHADRI 1 & 2

600

50.80
50.60
50.40
50.20
50.00

300
49.80
49.60

200

49.40
100
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

16:01

M W ----->

400

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

500

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RYTPS 1
50.80

250

50.40
50.20

150
50.00
49.80
100
49.60
49.40

50

49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

0

16:01

M W ----->

200

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KTS 9
50.80

250

50.20
50.00
240
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

230

16:01

M W ----->

50.40

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

200

50.80

180

50.60

160

50.40
50.20

120
50.00
100
49.80
80
49.60

60

49.40

40

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

49.00

19:01

0

18:01

49.20

17:01

20

16:01

M W ----->

140

F R E Q IN H Z ----->

VTS 1 TO 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SHARAVATHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

160

5 0 .8 0

140

5 0 .6 0
5 0 .4 0
5 0 .2 0

100

5 0 .0 0
80
4 9 .8 0
60

4 9 .6 0

40

4 9 .4 0

2 0 :0 1

4 9 .0 0

1 9 :0 1

0

1 8 :0 1

4 9 .2 0

1 7 :0 1

20

1 6 :0 1

M W ----->

120

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

NAGJHERI 1

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

VARAHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

F R E Q IN H Z ----->

5 0 .6 0

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RTPS 1
5 0 .8 0

200

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

IDDUKKI 1
5 0 .8 0

140

5 0 .4 0
5 0 .2 0
80

5 0 .0 0

60

4 9 .8 0
4 9 .6 0

40
4 9 .4 0
20

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

100

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

120

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SABRIGIRI 1
5 0 .8 0

60

50

5 0 .2 0

40

5 0 .0 0
30
4 9 .8 0
4 9 .6 0

20

4 9 .4 0
10
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

5 0 .4 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

LOWER PERIYAR 1
5 0 .8 0

10

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

TTPS 2
50.80

220

50.40
50.20
50.00

200
49.80
49.60
190

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

180

16:01

M W ----->

210

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

MTPS 2
50.80

220

50.20
50.00
210
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

200

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NMTPS 1
50.80

230

50.60

50.20

210

50.00
200
49.80
49.60

190

49.40
180
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

170

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

220

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

ETS 5
50.80

80

50.20

70

50.00
49.80
49.60

60

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

50

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KUNDAH III - 1
50.80

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

50.40
50.20
50.00

30
49.80
49.60

20

49.40
10
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

F R E Q IN H Z ----->

50.60

40

16:01

M W ----->

50


Slide 25

ANALYSIS OF

FREE GOVERNOR MODE OF
OPERATION
LOAD CHANGE OVER AT
18:00HRS
ON 05-FEB-05

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 1
5 0 .8 0

220

5 0 .4 0
5 0 .2 0
5 0 .0 0

200
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

190

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

180

1 6 :0 1

M W ----->

210

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 2
5 0 .8 0

210

5 0 .4 0
5 0 .2 0
5 0 .0 0

190
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

180

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

170

1 6 :0 1

M W ----->

200

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 3
5 0 .8 0

200

5 0 .2 0

190

5 0 .0 0
4 9 .8 0
4 9 .6 0

180

4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

170

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 4

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

510

5 0 .6 0

490

5 0 .4 0

470

5 0 .2 0

450

5 0 .0 0

430

4 9 .8 0

410

4 9 .6 0

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

530

1 6 :0 1

M W ----->

NTPC - 5

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 1

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

150

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

160

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 2

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 3

5 0 .6 0
5 0 .4 0
5 0 .2 0
160

5 0 .0 0
4 9 .8 0

150

4 9 .6 0
4 9 .4 0

140

4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

130

1 6 :0 1

M W ----->

170

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 4
5 0 .6 0
5 0 .4 0

M W ----->

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

190

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 5
5 0 .6 0
190

M W ----->

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

200

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 6
5 0 .6 0
5 0 .2 0

170

5 0 .0 0
4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 7
5 0 .6 0

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

10

4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 1
5 0 .6 0
5 0 .4 0
5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

180

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 2

5 0 .4 0

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .6 0

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SIMHADRI 1 & 2

600

50.80
50.60
50.40
50.20
50.00

300
49.80
49.60

200

49.40
100
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

16:01

M W ----->

400

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

500

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RYTPS 1
50.80

250

50.40
50.20

150
50.00
49.80
100
49.60
49.40

50

49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

0

16:01

M W ----->

200

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KTS 9
50.80

250

50.20
50.00
240
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

230

16:01

M W ----->

50.40

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

200

50.80

180

50.60

160

50.40
50.20

120
50.00
100
49.80
80
49.60

60

49.40

40

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

49.00

19:01

0

18:01

49.20

17:01

20

16:01

M W ----->

140

F R E Q IN H Z ----->

VTS 1 TO 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SHARAVATHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

160

5 0 .8 0

140

5 0 .6 0
5 0 .4 0
5 0 .2 0

100

5 0 .0 0
80
4 9 .8 0
60

4 9 .6 0

40

4 9 .4 0

2 0 :0 1

4 9 .0 0

1 9 :0 1

0

1 8 :0 1

4 9 .2 0

1 7 :0 1

20

1 6 :0 1

M W ----->

120

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

NAGJHERI 1

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

VARAHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

F R E Q IN H Z ----->

5 0 .6 0

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RTPS 1
5 0 .8 0

200

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

IDDUKKI 1
5 0 .8 0

140

5 0 .4 0
5 0 .2 0
80

5 0 .0 0

60

4 9 .8 0
4 9 .6 0

40
4 9 .4 0
20

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

100

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

120

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SABRIGIRI 1
5 0 .8 0

60

50

5 0 .2 0

40

5 0 .0 0
30
4 9 .8 0
4 9 .6 0

20

4 9 .4 0
10
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

5 0 .4 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

LOWER PERIYAR 1
5 0 .8 0

10

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

TTPS 2
50.80

220

50.40
50.20
50.00

200
49.80
49.60
190

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

180

16:01

M W ----->

210

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

MTPS 2
50.80

220

50.20
50.00
210
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

200

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NMTPS 1
50.80

230

50.60

50.20

210

50.00
200
49.80
49.60

190

49.40
180
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

170

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

220

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

ETS 5
50.80

80

50.20

70

50.00
49.80
49.60

60

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

50

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KUNDAH III - 1
50.80

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

50.40
50.20
50.00

30
49.80
49.60

20

49.40
10
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

F R E Q IN H Z ----->

50.60

40

16:01

M W ----->

50


Slide 26

ANALYSIS OF

FREE GOVERNOR MODE OF
OPERATION
LOAD CHANGE OVER AT
18:00HRS
ON 05-FEB-05

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 1
5 0 .8 0

220

5 0 .4 0
5 0 .2 0
5 0 .0 0

200
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

190

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

180

1 6 :0 1

M W ----->

210

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 2
5 0 .8 0

210

5 0 .4 0
5 0 .2 0
5 0 .0 0

190
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

180

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

170

1 6 :0 1

M W ----->

200

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 3
5 0 .8 0

200

5 0 .2 0

190

5 0 .0 0
4 9 .8 0
4 9 .6 0

180

4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

170

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 4

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

510

5 0 .6 0

490

5 0 .4 0

470

5 0 .2 0

450

5 0 .0 0

430

4 9 .8 0

410

4 9 .6 0

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

530

1 6 :0 1

M W ----->

NTPC - 5

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 1

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

150

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

160

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 2

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 3

5 0 .6 0
5 0 .4 0
5 0 .2 0
160

5 0 .0 0
4 9 .8 0

150

4 9 .6 0
4 9 .4 0

140

4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

130

1 6 :0 1

M W ----->

170

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 4
5 0 .6 0
5 0 .4 0

M W ----->

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

190

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 5
5 0 .6 0
190

M W ----->

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

200

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 6
5 0 .6 0
5 0 .2 0

170

5 0 .0 0
4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 7
5 0 .6 0

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

10

4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 1
5 0 .6 0
5 0 .4 0
5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

180

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 2

5 0 .4 0

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .6 0

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SIMHADRI 1 & 2

600

50.80
50.60
50.40
50.20
50.00

300
49.80
49.60

200

49.40
100
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

16:01

M W ----->

400

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

500

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RYTPS 1
50.80

250

50.40
50.20

150
50.00
49.80
100
49.60
49.40

50

49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

0

16:01

M W ----->

200

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KTS 9
50.80

250

50.20
50.00
240
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

230

16:01

M W ----->

50.40

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

200

50.80

180

50.60

160

50.40
50.20

120
50.00
100
49.80
80
49.60

60

49.40

40

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

49.00

19:01

0

18:01

49.20

17:01

20

16:01

M W ----->

140

F R E Q IN H Z ----->

VTS 1 TO 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SHARAVATHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

160

5 0 .8 0

140

5 0 .6 0
5 0 .4 0
5 0 .2 0

100

5 0 .0 0
80
4 9 .8 0
60

4 9 .6 0

40

4 9 .4 0

2 0 :0 1

4 9 .0 0

1 9 :0 1

0

1 8 :0 1

4 9 .2 0

1 7 :0 1

20

1 6 :0 1

M W ----->

120

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

NAGJHERI 1

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

VARAHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

F R E Q IN H Z ----->

5 0 .6 0

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RTPS 1
5 0 .8 0

200

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

IDDUKKI 1
5 0 .8 0

140

5 0 .4 0
5 0 .2 0
80

5 0 .0 0

60

4 9 .8 0
4 9 .6 0

40
4 9 .4 0
20

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

100

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

120

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SABRIGIRI 1
5 0 .8 0

60

50

5 0 .2 0

40

5 0 .0 0
30
4 9 .8 0
4 9 .6 0

20

4 9 .4 0
10
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

5 0 .4 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

LOWER PERIYAR 1
5 0 .8 0

10

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

TTPS 2
50.80

220

50.40
50.20
50.00

200
49.80
49.60
190

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

180

16:01

M W ----->

210

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

MTPS 2
50.80

220

50.20
50.00
210
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

200

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NMTPS 1
50.80

230

50.60

50.20

210

50.00
200
49.80
49.60

190

49.40
180
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

170

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

220

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

ETS 5
50.80

80

50.20

70

50.00
49.80
49.60

60

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

50

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KUNDAH III - 1
50.80

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

50.40
50.20
50.00

30
49.80
49.60

20

49.40
10
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

F R E Q IN H Z ----->

50.60

40

16:01

M W ----->

50


Slide 27

ANALYSIS OF

FREE GOVERNOR MODE OF
OPERATION
LOAD CHANGE OVER AT
18:00HRS
ON 05-FEB-05

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 1
5 0 .8 0

220

5 0 .4 0
5 0 .2 0
5 0 .0 0

200
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

190

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

180

1 6 :0 1

M W ----->

210

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 2
5 0 .8 0

210

5 0 .4 0
5 0 .2 0
5 0 .0 0

190
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

180

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

170

1 6 :0 1

M W ----->

200

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 3
5 0 .8 0

200

5 0 .2 0

190

5 0 .0 0
4 9 .8 0
4 9 .6 0

180

4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

170

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 4

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

510

5 0 .6 0

490

5 0 .4 0

470

5 0 .2 0

450

5 0 .0 0

430

4 9 .8 0

410

4 9 .6 0

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

530

1 6 :0 1

M W ----->

NTPC - 5

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 1

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

150

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

160

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 2

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 3

5 0 .6 0
5 0 .4 0
5 0 .2 0
160

5 0 .0 0
4 9 .8 0

150

4 9 .6 0
4 9 .4 0

140

4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

130

1 6 :0 1

M W ----->

170

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 4
5 0 .6 0
5 0 .4 0

M W ----->

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

190

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 5
5 0 .6 0
190

M W ----->

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

200

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 6
5 0 .6 0
5 0 .2 0

170

5 0 .0 0
4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 7
5 0 .6 0

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

10

4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 1
5 0 .6 0
5 0 .4 0
5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

180

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 2

5 0 .4 0

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .6 0

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SIMHADRI 1 & 2

600

50.80
50.60
50.40
50.20
50.00

300
49.80
49.60

200

49.40
100
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

16:01

M W ----->

400

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

500

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RYTPS 1
50.80

250

50.40
50.20

150
50.00
49.80
100
49.60
49.40

50

49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

0

16:01

M W ----->

200

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KTS 9
50.80

250

50.20
50.00
240
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

230

16:01

M W ----->

50.40

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

200

50.80

180

50.60

160

50.40
50.20

120
50.00
100
49.80
80
49.60

60

49.40

40

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

49.00

19:01

0

18:01

49.20

17:01

20

16:01

M W ----->

140

F R E Q IN H Z ----->

VTS 1 TO 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SHARAVATHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

160

5 0 .8 0

140

5 0 .6 0
5 0 .4 0
5 0 .2 0

100

5 0 .0 0
80
4 9 .8 0
60

4 9 .6 0

40

4 9 .4 0

2 0 :0 1

4 9 .0 0

1 9 :0 1

0

1 8 :0 1

4 9 .2 0

1 7 :0 1

20

1 6 :0 1

M W ----->

120

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

NAGJHERI 1

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

VARAHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

F R E Q IN H Z ----->

5 0 .6 0

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RTPS 1
5 0 .8 0

200

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

IDDUKKI 1
5 0 .8 0

140

5 0 .4 0
5 0 .2 0
80

5 0 .0 0

60

4 9 .8 0
4 9 .6 0

40
4 9 .4 0
20

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

100

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

120

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SABRIGIRI 1
5 0 .8 0

60

50

5 0 .2 0

40

5 0 .0 0
30
4 9 .8 0
4 9 .6 0

20

4 9 .4 0
10
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

5 0 .4 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

LOWER PERIYAR 1
5 0 .8 0

10

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

TTPS 2
50.80

220

50.40
50.20
50.00

200
49.80
49.60
190

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

180

16:01

M W ----->

210

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

MTPS 2
50.80

220

50.20
50.00
210
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

200

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NMTPS 1
50.80

230

50.60

50.20

210

50.00
200
49.80
49.60

190

49.40
180
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

170

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

220

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

ETS 5
50.80

80

50.20

70

50.00
49.80
49.60

60

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

50

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KUNDAH III - 1
50.80

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

50.40
50.20
50.00

30
49.80
49.60

20

49.40
10
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

F R E Q IN H Z ----->

50.60

40

16:01

M W ----->

50


Slide 28

ANALYSIS OF

FREE GOVERNOR MODE OF
OPERATION
LOAD CHANGE OVER AT
18:00HRS
ON 05-FEB-05

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 1
5 0 .8 0

220

5 0 .4 0
5 0 .2 0
5 0 .0 0

200
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

190

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

180

1 6 :0 1

M W ----->

210

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 2
5 0 .8 0

210

5 0 .4 0
5 0 .2 0
5 0 .0 0

190
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

180

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

170

1 6 :0 1

M W ----->

200

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 3
5 0 .8 0

200

5 0 .2 0

190

5 0 .0 0
4 9 .8 0
4 9 .6 0

180

4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

170

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 4

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

510

5 0 .6 0

490

5 0 .4 0

470

5 0 .2 0

450

5 0 .0 0

430

4 9 .8 0

410

4 9 .6 0

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

530

1 6 :0 1

M W ----->

NTPC - 5

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 1

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

150

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

160

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 2

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 3

5 0 .6 0
5 0 .4 0
5 0 .2 0
160

5 0 .0 0
4 9 .8 0

150

4 9 .6 0
4 9 .4 0

140

4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

130

1 6 :0 1

M W ----->

170

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 4
5 0 .6 0
5 0 .4 0

M W ----->

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

190

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 5
5 0 .6 0
190

M W ----->

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

200

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 6
5 0 .6 0
5 0 .2 0

170

5 0 .0 0
4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 7
5 0 .6 0

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

10

4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 1
5 0 .6 0
5 0 .4 0
5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

180

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 2

5 0 .4 0

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .6 0

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SIMHADRI 1 & 2

600

50.80
50.60
50.40
50.20
50.00

300
49.80
49.60

200

49.40
100
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

16:01

M W ----->

400

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

500

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RYTPS 1
50.80

250

50.40
50.20

150
50.00
49.80
100
49.60
49.40

50

49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

0

16:01

M W ----->

200

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KTS 9
50.80

250

50.20
50.00
240
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

230

16:01

M W ----->

50.40

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

200

50.80

180

50.60

160

50.40
50.20

120
50.00
100
49.80
80
49.60

60

49.40

40

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

49.00

19:01

0

18:01

49.20

17:01

20

16:01

M W ----->

140

F R E Q IN H Z ----->

VTS 1 TO 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SHARAVATHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

160

5 0 .8 0

140

5 0 .6 0
5 0 .4 0
5 0 .2 0

100

5 0 .0 0
80
4 9 .8 0
60

4 9 .6 0

40

4 9 .4 0

2 0 :0 1

4 9 .0 0

1 9 :0 1

0

1 8 :0 1

4 9 .2 0

1 7 :0 1

20

1 6 :0 1

M W ----->

120

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

NAGJHERI 1

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

VARAHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

F R E Q IN H Z ----->

5 0 .6 0

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RTPS 1
5 0 .8 0

200

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

IDDUKKI 1
5 0 .8 0

140

5 0 .4 0
5 0 .2 0
80

5 0 .0 0

60

4 9 .8 0
4 9 .6 0

40
4 9 .4 0
20

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

100

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

120

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SABRIGIRI 1
5 0 .8 0

60

50

5 0 .2 0

40

5 0 .0 0
30
4 9 .8 0
4 9 .6 0

20

4 9 .4 0
10
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

5 0 .4 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

LOWER PERIYAR 1
5 0 .8 0

10

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

TTPS 2
50.80

220

50.40
50.20
50.00

200
49.80
49.60
190

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

180

16:01

M W ----->

210

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

MTPS 2
50.80

220

50.20
50.00
210
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

200

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NMTPS 1
50.80

230

50.60

50.20

210

50.00
200
49.80
49.60

190

49.40
180
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

170

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

220

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

ETS 5
50.80

80

50.20

70

50.00
49.80
49.60

60

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

50

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KUNDAH III - 1
50.80

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

50.40
50.20
50.00

30
49.80
49.60

20

49.40
10
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

F R E Q IN H Z ----->

50.60

40

16:01

M W ----->

50


Slide 29

ANALYSIS OF

FREE GOVERNOR MODE OF
OPERATION
LOAD CHANGE OVER AT
18:00HRS
ON 05-FEB-05

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 1
5 0 .8 0

220

5 0 .4 0
5 0 .2 0
5 0 .0 0

200
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

190

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

180

1 6 :0 1

M W ----->

210

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 2
5 0 .8 0

210

5 0 .4 0
5 0 .2 0
5 0 .0 0

190
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

180

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

170

1 6 :0 1

M W ----->

200

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 3
5 0 .8 0

200

5 0 .2 0

190

5 0 .0 0
4 9 .8 0
4 9 .6 0

180

4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

170

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 4

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

510

5 0 .6 0

490

5 0 .4 0

470

5 0 .2 0

450

5 0 .0 0

430

4 9 .8 0

410

4 9 .6 0

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

530

1 6 :0 1

M W ----->

NTPC - 5

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 1

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

150

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

160

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 2

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 3

5 0 .6 0
5 0 .4 0
5 0 .2 0
160

5 0 .0 0
4 9 .8 0

150

4 9 .6 0
4 9 .4 0

140

4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

130

1 6 :0 1

M W ----->

170

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 4
5 0 .6 0
5 0 .4 0

M W ----->

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

190

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 5
5 0 .6 0
190

M W ----->

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

200

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 6
5 0 .6 0
5 0 .2 0

170

5 0 .0 0
4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 7
5 0 .6 0

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

10

4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 1
5 0 .6 0
5 0 .4 0
5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

180

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 2

5 0 .4 0

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .6 0

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SIMHADRI 1 & 2

600

50.80
50.60
50.40
50.20
50.00

300
49.80
49.60

200

49.40
100
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

16:01

M W ----->

400

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

500

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RYTPS 1
50.80

250

50.40
50.20

150
50.00
49.80
100
49.60
49.40

50

49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

0

16:01

M W ----->

200

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KTS 9
50.80

250

50.20
50.00
240
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

230

16:01

M W ----->

50.40

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

200

50.80

180

50.60

160

50.40
50.20

120
50.00
100
49.80
80
49.60

60

49.40

40

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

49.00

19:01

0

18:01

49.20

17:01

20

16:01

M W ----->

140

F R E Q IN H Z ----->

VTS 1 TO 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SHARAVATHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

160

5 0 .8 0

140

5 0 .6 0
5 0 .4 0
5 0 .2 0

100

5 0 .0 0
80
4 9 .8 0
60

4 9 .6 0

40

4 9 .4 0

2 0 :0 1

4 9 .0 0

1 9 :0 1

0

1 8 :0 1

4 9 .2 0

1 7 :0 1

20

1 6 :0 1

M W ----->

120

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

NAGJHERI 1

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

VARAHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

F R E Q IN H Z ----->

5 0 .6 0

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RTPS 1
5 0 .8 0

200

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

IDDUKKI 1
5 0 .8 0

140

5 0 .4 0
5 0 .2 0
80

5 0 .0 0

60

4 9 .8 0
4 9 .6 0

40
4 9 .4 0
20

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

100

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

120

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SABRIGIRI 1
5 0 .8 0

60

50

5 0 .2 0

40

5 0 .0 0
30
4 9 .8 0
4 9 .6 0

20

4 9 .4 0
10
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

5 0 .4 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

LOWER PERIYAR 1
5 0 .8 0

10

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

TTPS 2
50.80

220

50.40
50.20
50.00

200
49.80
49.60
190

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

180

16:01

M W ----->

210

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

MTPS 2
50.80

220

50.20
50.00
210
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

200

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NMTPS 1
50.80

230

50.60

50.20

210

50.00
200
49.80
49.60

190

49.40
180
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

170

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

220

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

ETS 5
50.80

80

50.20

70

50.00
49.80
49.60

60

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

50

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KUNDAH III - 1
50.80

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

50.40
50.20
50.00

30
49.80
49.60

20

49.40
10
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

F R E Q IN H Z ----->

50.60

40

16:01

M W ----->

50


Slide 30

ANALYSIS OF

FREE GOVERNOR MODE OF
OPERATION
LOAD CHANGE OVER AT
18:00HRS
ON 05-FEB-05

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 1
5 0 .8 0

220

5 0 .4 0
5 0 .2 0
5 0 .0 0

200
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

190

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

180

1 6 :0 1

M W ----->

210

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 2
5 0 .8 0

210

5 0 .4 0
5 0 .2 0
5 0 .0 0

190
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

180

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

170

1 6 :0 1

M W ----->

200

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 3
5 0 .8 0

200

5 0 .2 0

190

5 0 .0 0
4 9 .8 0
4 9 .6 0

180

4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

170

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 4

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

510

5 0 .6 0

490

5 0 .4 0

470

5 0 .2 0

450

5 0 .0 0

430

4 9 .8 0

410

4 9 .6 0

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

530

1 6 :0 1

M W ----->

NTPC - 5

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 1

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

150

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

160

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 2

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 3

5 0 .6 0
5 0 .4 0
5 0 .2 0
160

5 0 .0 0
4 9 .8 0

150

4 9 .6 0
4 9 .4 0

140

4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

130

1 6 :0 1

M W ----->

170

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 4
5 0 .6 0
5 0 .4 0

M W ----->

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

190

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 5
5 0 .6 0
190

M W ----->

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

200

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 6
5 0 .6 0
5 0 .2 0

170

5 0 .0 0
4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 7
5 0 .6 0

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

10

4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 1
5 0 .6 0
5 0 .4 0
5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

180

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 2

5 0 .4 0

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .6 0

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SIMHADRI 1 & 2

600

50.80
50.60
50.40
50.20
50.00

300
49.80
49.60

200

49.40
100
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

16:01

M W ----->

400

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

500

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RYTPS 1
50.80

250

50.40
50.20

150
50.00
49.80
100
49.60
49.40

50

49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

0

16:01

M W ----->

200

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KTS 9
50.80

250

50.20
50.00
240
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

230

16:01

M W ----->

50.40

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

200

50.80

180

50.60

160

50.40
50.20

120
50.00
100
49.80
80
49.60

60

49.40

40

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

49.00

19:01

0

18:01

49.20

17:01

20

16:01

M W ----->

140

F R E Q IN H Z ----->

VTS 1 TO 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SHARAVATHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

160

5 0 .8 0

140

5 0 .6 0
5 0 .4 0
5 0 .2 0

100

5 0 .0 0
80
4 9 .8 0
60

4 9 .6 0

40

4 9 .4 0

2 0 :0 1

4 9 .0 0

1 9 :0 1

0

1 8 :0 1

4 9 .2 0

1 7 :0 1

20

1 6 :0 1

M W ----->

120

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

NAGJHERI 1

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

VARAHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

F R E Q IN H Z ----->

5 0 .6 0

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RTPS 1
5 0 .8 0

200

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

IDDUKKI 1
5 0 .8 0

140

5 0 .4 0
5 0 .2 0
80

5 0 .0 0

60

4 9 .8 0
4 9 .6 0

40
4 9 .4 0
20

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

100

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

120

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SABRIGIRI 1
5 0 .8 0

60

50

5 0 .2 0

40

5 0 .0 0
30
4 9 .8 0
4 9 .6 0

20

4 9 .4 0
10
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

5 0 .4 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

LOWER PERIYAR 1
5 0 .8 0

10

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

TTPS 2
50.80

220

50.40
50.20
50.00

200
49.80
49.60
190

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

180

16:01

M W ----->

210

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

MTPS 2
50.80

220

50.20
50.00
210
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

200

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NMTPS 1
50.80

230

50.60

50.20

210

50.00
200
49.80
49.60

190

49.40
180
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

170

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

220

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

ETS 5
50.80

80

50.20

70

50.00
49.80
49.60

60

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

50

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KUNDAH III - 1
50.80

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

50.40
50.20
50.00

30
49.80
49.60

20

49.40
10
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

F R E Q IN H Z ----->

50.60

40

16:01

M W ----->

50


Slide 31

ANALYSIS OF

FREE GOVERNOR MODE OF
OPERATION
LOAD CHANGE OVER AT
18:00HRS
ON 05-FEB-05

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 1
5 0 .8 0

220

5 0 .4 0
5 0 .2 0
5 0 .0 0

200
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

190

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

180

1 6 :0 1

M W ----->

210

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 2
5 0 .8 0

210

5 0 .4 0
5 0 .2 0
5 0 .0 0

190
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

180

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

170

1 6 :0 1

M W ----->

200

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 3
5 0 .8 0

200

5 0 .2 0

190

5 0 .0 0
4 9 .8 0
4 9 .6 0

180

4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

170

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 4

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

510

5 0 .6 0

490

5 0 .4 0

470

5 0 .2 0

450

5 0 .0 0

430

4 9 .8 0

410

4 9 .6 0

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

530

1 6 :0 1

M W ----->

NTPC - 5

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 1

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

150

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

160

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 2

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 3

5 0 .6 0
5 0 .4 0
5 0 .2 0
160

5 0 .0 0
4 9 .8 0

150

4 9 .6 0
4 9 .4 0

140

4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

130

1 6 :0 1

M W ----->

170

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 4
5 0 .6 0
5 0 .4 0

M W ----->

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

190

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 5
5 0 .6 0
190

M W ----->

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

200

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 6
5 0 .6 0
5 0 .2 0

170

5 0 .0 0
4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 7
5 0 .6 0

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

10

4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 1
5 0 .6 0
5 0 .4 0
5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

180

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 2

5 0 .4 0

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .6 0

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SIMHADRI 1 & 2

600

50.80
50.60
50.40
50.20
50.00

300
49.80
49.60

200

49.40
100
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

16:01

M W ----->

400

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

500

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RYTPS 1
50.80

250

50.40
50.20

150
50.00
49.80
100
49.60
49.40

50

49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

0

16:01

M W ----->

200

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KTS 9
50.80

250

50.20
50.00
240
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

230

16:01

M W ----->

50.40

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

200

50.80

180

50.60

160

50.40
50.20

120
50.00
100
49.80
80
49.60

60

49.40

40

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

49.00

19:01

0

18:01

49.20

17:01

20

16:01

M W ----->

140

F R E Q IN H Z ----->

VTS 1 TO 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SHARAVATHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

160

5 0 .8 0

140

5 0 .6 0
5 0 .4 0
5 0 .2 0

100

5 0 .0 0
80
4 9 .8 0
60

4 9 .6 0

40

4 9 .4 0

2 0 :0 1

4 9 .0 0

1 9 :0 1

0

1 8 :0 1

4 9 .2 0

1 7 :0 1

20

1 6 :0 1

M W ----->

120

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

NAGJHERI 1

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

VARAHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

F R E Q IN H Z ----->

5 0 .6 0

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RTPS 1
5 0 .8 0

200

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

IDDUKKI 1
5 0 .8 0

140

5 0 .4 0
5 0 .2 0
80

5 0 .0 0

60

4 9 .8 0
4 9 .6 0

40
4 9 .4 0
20

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

100

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

120

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SABRIGIRI 1
5 0 .8 0

60

50

5 0 .2 0

40

5 0 .0 0
30
4 9 .8 0
4 9 .6 0

20

4 9 .4 0
10
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

5 0 .4 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

LOWER PERIYAR 1
5 0 .8 0

10

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

TTPS 2
50.80

220

50.40
50.20
50.00

200
49.80
49.60
190

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

180

16:01

M W ----->

210

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

MTPS 2
50.80

220

50.20
50.00
210
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

200

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NMTPS 1
50.80

230

50.60

50.20

210

50.00
200
49.80
49.60

190

49.40
180
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

170

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

220

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

ETS 5
50.80

80

50.20

70

50.00
49.80
49.60

60

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

50

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KUNDAH III - 1
50.80

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

50.40
50.20
50.00

30
49.80
49.60

20

49.40
10
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

F R E Q IN H Z ----->

50.60

40

16:01

M W ----->

50


Slide 32

ANALYSIS OF

FREE GOVERNOR MODE OF
OPERATION
LOAD CHANGE OVER AT
18:00HRS
ON 05-FEB-05

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 1
5 0 .8 0

220

5 0 .4 0
5 0 .2 0
5 0 .0 0

200
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

190

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

180

1 6 :0 1

M W ----->

210

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 2
5 0 .8 0

210

5 0 .4 0
5 0 .2 0
5 0 .0 0

190
4 9 .8 0
4 9 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

180

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

170

1 6 :0 1

M W ----->

200

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NTPC - 3
5 0 .8 0

200

5 0 .2 0

190

5 0 .0 0
4 9 .8 0
4 9 .6 0

180

4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

170

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 4

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

510

5 0 .6 0

490

5 0 .4 0

470

5 0 .2 0

450

5 0 .0 0

430

4 9 .8 0

410

4 9 .6 0

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

1 7 :0 1

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

390

F R E Q IN H Z ----->

530

1 6 :0 1

M W ----->

NTPC - 5

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

5 0 .8 0

530

5 0 .6 0

510

5 0 .4 0

490

5 0 .2 0

470

5 0 .0 0

450
4 9 .8 0

430

4 9 .6 0

410

4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

4 9 .0 0

1 9 :0 1

350

4 9 .4 0

1 8 :0 1

370

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

390

F R E Q IN H Z ----->

550

1 6 :0 1

M W ----->

NTPC - 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 1

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

4 9 .0 0

1 8 :0 1

150

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ
1 7 :0 1

160

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 2

5 0 .6 0
5 0 .4 0
5 0 .2 0
180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .8 0

200

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 3

5 0 .6 0
5 0 .4 0
5 0 .2 0
160

5 0 .0 0
4 9 .8 0

150

4 9 .6 0
4 9 .4 0

140

4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

130

1 6 :0 1

M W ----->

170

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 4
5 0 .6 0
5 0 .4 0

M W ----->

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

190

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 5
5 0 .6 0
190

M W ----->

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

200

4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

150

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 6
5 0 .6 0
5 0 .2 0

170

5 0 .0 0
4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .4 0

F R E Q IN H Z ----->

5 0 .8 0

180

T IM E IN H H :M M ----->
FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY II 7
5 0 .6 0

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

F R E Q IN H Z ----->

5 0 .8 0

10

4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 1
5 0 .6 0
5 0 .4 0
5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

180

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NLY TPS 1 (Exp) 2

5 0 .4 0

180

5 0 .2 0
5 0 .0 0

170

4 9 .8 0
4 9 .6 0

160

4 9 .4 0
4 9 .2 0
4 9 .0 0

T IM E IN H H :M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

5 0 .6 0

F R E Q IN H Z ----->

5 0 .8 0

190

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SIMHADRI 1 & 2

600

50.80
50.60
50.40
50.20
50.00

300
49.80
49.60

200

49.40
100
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

16:01

M W ----->

400

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

500

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RYTPS 1
50.80

250

50.40
50.20

150
50.00
49.80
100
49.60
49.40

50

49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

0

16:01

M W ----->

200

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KTS 9
50.80

250

50.20
50.00
240
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

19:01

18:01

17:01

230

16:01

M W ----->

50.40

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

200

50.80

180

50.60

160

50.40
50.20

120
50.00
100
49.80
80
49.60

60

49.40

40

T IM E IN H H :M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

20:01

49.00

19:01

0

18:01

49.20

17:01

20

16:01

M W ----->

140

F R E Q IN H Z ----->

VTS 1 TO 6

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SHARAVATHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

160

5 0 .8 0

140

5 0 .6 0
5 0 .4 0
5 0 .2 0

100

5 0 .0 0
80
4 9 .8 0
60

4 9 .6 0

40

4 9 .4 0

2 0 :0 1

4 9 .0 0

1 9 :0 1

0

1 8 :0 1

4 9 .2 0

1 7 :0 1

20

1 6 :0 1

M W ----->

120

T IM E IN H H : M M ----->

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

NAGJHERI 1

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

VARAHI 1
5 0 .8 0

70

5 0 .4 0
5 0 .2 0
40

5 0 .0 0

30

4 9 .8 0
4 9 .6 0

20
4 9 .4 0
10

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

50

F R E Q IN H Z ----->

5 0 .6 0

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

RTPS 1
5 0 .8 0

200

5 0 .4 0
5 0 .2 0

180

5 0 .0 0
4 9 .8 0

170

4 9 .6 0
4 9 .4 0

160

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

150

1 6 :0 1

M W ----->

190

F R E Q IN H Z ----->

5 0 .6 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

IDDUKKI 1
5 0 .8 0

140

5 0 .4 0
5 0 .2 0
80

5 0 .0 0

60

4 9 .8 0
4 9 .6 0

40
4 9 .4 0
20

4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

100

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

120

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

SABRIGIRI 1
5 0 .8 0

60

50

5 0 .2 0

40

5 0 .0 0
30
4 9 .8 0
4 9 .6 0

20

4 9 .4 0
10
4 9 .2 0
4 9 .0 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

0

1 6 :0 1

M W ----->

5 0 .4 0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

LOWER PERIYAR 1
5 0 .8 0

10

M W ----->

5 0 .4 0
5 0 .2 0
5 0 .0 0
4 9 .8 0
4 9 .6 0
4 9 .4 0
4 9 .2 0

T IM E IN H H : M M ----->

2 0 :0 1

1 9 :0 1

1 8 :0 1

1 7 :0 1

1 6 :0 1

0

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

5 0 .6 0

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

TTPS 2
50.80

220

50.40
50.20
50.00

200
49.80
49.60
190

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

180

16:01

M W ----->

210

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

MTPS 2
50.80

220

50.20
50.00
210
49.80
49.60
49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

200

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

NMTPS 1
50.80

230

50.60

50.20

210

50.00
200
49.80
49.60

190

49.40
180
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

170

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

220

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

ETS 5
50.80

80

50.20

70

50.00
49.80
49.60

60

49.40
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

50

16:01

M W ----->

50.40

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

F R E Q IN H Z ----->

50.60

FREE GOVERNOR MODE OF OPERATION ON 05-FEB-05
G E NE RAT IO N v s F RE Q UE NC Y F O R

KUNDAH III - 1
50.80

60

FREQ RISE FROM 49.80
HZ TO 50.74 HZ i.e. ~
0.94HZ

50.40
50.20
50.00

30
49.80
49.60

20

49.40
10
49.20
49.00

T IM E IN H H :M M ----->

20:01

19:01

18:01

17:01

0

F R E Q IN H Z ----->

50.60

40

16:01

M W ----->

50