Transcript SIPROTEC 4, Distanzschutz 7SA522

SIPROTEC 4
Distance Protection
7SA522 and 7SA6
Productmanager Distance Protection
Michael Claus
EV S V 13 Nürnberg H
Phone: +49 911 433 8261
Fax: +49 911 433 8301
Email: [email protected]
Distance protection
Info - 1
EV S V13/ Claus/ 23.08.00
SIPROTEC 4 What it means
SIPROTEC 4
is a family of numerical
Protection, Control and Automation
Devices
from
Distance protection
Info - 2
EV S V13/ Claus/ 23.08.00
Distance protection: Past and Present
7SA510
SIPROTEC 4
Software System
7SA511
7SA513
7SA522
7SA6
SIPROTEC 4
Hardware Platform
Distance protection
Info - 3
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SIPROTEC 4
Distance Protection 7SA522 and 7SA6
7SA522 + 7SA6
One family of
distance
protection for all
voltage
applications
Distance protection
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SIPROTEC 4
Distance protection
7SA61 + 7SA522
 Protection
 4-line display
 MV, HV and EHV
7SA610
7SA611 + 7SA522
7SA612 + 7SA522
7SA63
 Protection + local control
 integrated graphic display
 mainly MV
7SA631
7SA632
7SA64
 Protection + local control
 detached control panel
 mainly MV
7SA641
Distance protection
7SA642
All core functions are
available in all the
housing versions
Info - 5
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SIPROTEC 4
Distance Protection, Scope of functions (1)
ANSI-No.
 Distance Protection
 21, 21N
 full scheme measurement with sophisticated loop selection
 fast three phase and single phase tripping
 with/without parallel line compensation
 special filtering for CVT transients
 special algorithm for detection and compensation of CT
saturation  Low demand on CT specification
 Power swing blocking/out-of-step tripping
 68
 Fault Locator with/without parallel line compensation
 FL
Distance protection
Info - 6
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SIPROTEC 4
Distance Protection, Scope of functions (2)
ANSI-No.
 Universal teleprotection interface
(PUTT, POTT, Blocking, Unblocking, DTT...)
 85-21
 High resistance earth fault protection
for earthed systems
 50N, 51N,
67N
 Teleprotection interface for earth fault protection
(Directional comparison, Blocking, Unblocking)
 85-67N
 Weak infeed protection
(Echo and Trip)
 WI
 Overcurrent protection DMTL/IDMTL as parallel or
emergency function
 50, 51
50N-2,
51N-2
Distance protection
Info - 7
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SIPROTEC 4
Distance Protection, Scope of functions (3)
 Voltage protection
ANSI-No.
 59, 27 1)
1)
 Fast tripping with switch-onto-fault condition (12 ms)
 50HS
 STUB Bus Overcurrent protection
 50-STUB
 Single and three pole multishot automatic reclosure
 79
 Synchro-check
 25
 Circuit-breaker failure protection
 50BF
 Thermal overload protection
 49 2)
2)
 Earth fault detection in compensated/isolated systems
1)
7SA522: Overvoltage, 7SA6: Over- and Undervoltage
2)
available only in 7SA6
Distance protection
2)
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SIPROTEC 4
Distance Protection, Scope of functions (4)
ANSI-No.
 Trip Circuit Supervision
74TC
 Lock Out
86
 Oscillographic Fault Recording (total length 15 s)
FR
 Voltage Phase Sequence
47
 Interfaces
 Time synchronization (IRIG-B, DCF77)
 User interface#1 (on the front for DIGSI 4)
 User-(Service-)interface #2 (on the rear, DIGSI 4/Modem)
 System interface (IEC60870-5-103/Profibus FMS/others)
 Remote relay interfaces #1 (planned for teleprotection*)

1)
1)
Remote relay interfaces #2 (planned for teleprotection*)
available only in 7SA522
Distance protection
* available approx. 1st Q/01
Info - 9
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SIPROTEC 4
Distance Protection, Monitoring
Operating system monitoring
Plausibility monitoring

Auxiliary voltage failure

Current sum

Measured value detection

Current symmetry

Buffer battery

Open conductor

Hardware–Watchdog

Fuse Failure

Software–Watchdog

1- / 2-pole failures

Working memory

3-pole failures

Program memory

Voltage sum

Parameter memory

Voltage symmetry

Sampling frequency

Voltage phase rotation

1/5 A–setting

Calibration data

Earth current
transformer
sensitive/normal

Modules (I/O Boards)
Distance protection
Info - 10
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!
SIPROTEC 4
Distance Protection
rd
wa
for
X
s
Quadrilateral Characteristic
Line
Z5
5 Zones (time delayed)
optionally:
-
Forward
Reverse
Non-directional
Z4
Z2
Z1B

rev
e
Z1
rse

Load
Load
R
Dependant Zone Z1b for
Teleprotection and
Auto-recloser
Z3
ers
e
Distance protection
ard
rev
Prevention of load
encroachment
forw
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s
SIPROTEC 4
Distance Protection: Overall Trip Time Curves at SIR = 30
50
If
45
ZL
ZQ
G
40
E
VF
tripping time (ms)
35
distance relay
30
25
20
Relay S
15
SIPROTEC 4, 7SA522 + 7SA6
Relay E
10
Relay A
5
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
% of zone 1 setting
Distance protection
Info - 13
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SIPROTEC 4 Distance Protection,
Data window position, Adaptive Measuring Algorithm
A
+ 2 .0 0
+ 1 .6 0
+ 1 .2 0
+ 0 .8 0
+ 0 .4 0
+ 0 .0 0
-0 .4 0
-0 .8 0
-1 .2 0
Estimator 1 (n=5)
E s tim a to r 2 (n = 6 )
E s tim a to r 3 (n = 8 )
E s tim a to r 4 (n = 1 0 )
E s tim a to r 5 (n = 1 3 )
E s tim a to r 6 (n
N o rm a l s ta g e
(n = 2 1 )
N o rm a l s ta g e
(n = 2 6 )
N o rm a l s ta g e
=15)
1
2
3
0
ju m p d e te c tio n
Distance protection
10
20
30
40
50
60
70
80
m s
Info - 14
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SIPROTEC 4
Distance Protection Function: Difference 7SA522 - 7SA6
 7SA522
 for solid earthed systems
 quadrilateral and/or MHO characteristic
(MHO circle for specific markets, quadrilateral is preferred)
 full market introduction: 1999
 primary market outside continental Europe
 7SA6
 for systems with solid grounding or
reactance (compensated) / isolated treatment of system starpoint
 fault detection selectable as either I>, Z<, U/I and U/I/
 Market introduction: Summer 2000
 Primary market continental Europe
Distance protection
Info - 15
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SIPROTEC 4
Distance Protection 7SA522
X
Line
Mho Characteristic
Z5
Z4
Z1B
5 Zones optionally:
Z2
-
Forward
Reverse
Z1
Load

Dependant Zone Z1b for
Teleprotection and
Auto-recloser
Prevention of load
encroachment
Distance protection
Load
R
Z3 (if revers)
Info - 16
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SIPROTEC 4, Distance Protection
Parallel-line compensation: connection and setting
L1 (A)
L2 (B)
L3 (C)
Busbar
Q1
Q2
Q3
Q4
Q5
Q6
Q7
Q8
52
Line
Distance protection
Circuit
breaker
IL1(A)
IL2(B)
IL3(C)
I4
52
Circuit
breaker
Parallel line
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Patented power swing detection provides secure operation with
swing frequencies of up to 6 Hz
iL1/A
0
-2
0,2
0,3
0,4
0,5
0,6
0,7
0,8
0,9
1,0
1,1
1,2
1,3
1,4
1,5
1,6
0,2
0,3
0,4
0,5
0,6
0,7
0,8
0,9
1,0
1,1
1,2
1,3
1,4
1,5
1,6
0,2
0,3
0,4
0,5
0,6
0,7
0,8
0,9
1,0
1,1
1,2
1,3
1,4
1,5
1,6
0,2
0,3
0,4
0,5
0,6
0,7
0,8
0,9
1,0
1,1
1,2
1,3
1,4
1,5
1,6
0,2
0,3
0,4
0,5
0,6
0,7
0,8
0,9
1,0
1,1
1,2
1,3
1,4
1,5
1,6
0,2
0,3
0,4
0,5
0,6
0,7
0,8
0,9
1,0
1,1
1,2
1,3
1,4
1,5
1,6
0,2
0,3
0,4
0,5
0,6
0,7
0,8
0,9
1,0
1,1
1,2
1,3
1,4
1,5
1,6
t/s
-4
iL2/A
0
-2
t/s
Example:
400 kV
400 km
fPS  2 Hz
3-pole fault
iL3/A
2
t/s
0
-2
uL1/V
0
-50
t/s
uL2/V
50
0
-50
t/s
uL3/V
50
0
-50
t/s
Power Swing
>DisTel Rec.Ch1
Dis.T.SEND
Dis. forward
Dis. reverse
Relay PICKUP
Relay TRIP
DisTRIP3p Z1Bmf
Distance protection
t/s
Info - 18
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SIPROTEC 4
Distance Protection: Fault locator
Distance protection
Info - 19
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SIPROTEC 4
Distance Protection: Phase segregated Teleprotection
2
L2-E
Z1
Z1B
A
2
1
L1-E
Z1
1
B
Z1B
A1 trips single-phase in L1 with a phase-segregated L1-receive-signal
 Maximum of Selectivity
Note: 3 binary channels for both directions are requested or (in preparation) one serial link
Distance protection
Info - 20
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SIPROTEC 4
Distance Protection: Teleprotection with three-terminal lines
Software provides
teleprotection of threeterminal lines without
additional logic
Distance protection
Info - 21
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SIPROTEC 4
Distance Protection: High Resistance Earth Fault Protection
 Earth (zero sequence) current protection, 4 stages
 3 definite-time stages
 1 inverse-time stage: IEC, logarithmic inverse or ANSI characteristic
this stage can also be used as a 4th definite-time stage
 Directional determination with 3V0 and/or Ipol of an earthed power
transformer
 Directional determination with V2 and I2 (negative sequence)
 Sensitive 3I0-measurement with a dynamic from 0.003 A to 100 x In
 Elimination of higher harmonics with special digital filters
 Inrush-stabilisation with I0/100Hz
 Teleprotection: Directional comparison, Blocking or Unblocking
 Operation with weak infeed trip and echo
 Instantaneous trip after switch-onto-fault
Distance protection
Info - 22
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SIPROTEC 4
Distance Protection: High Resistance Earth Fault Protection
T
Definite-time characteristic
T3I0>
T3I0>>
T3I0>>>
3I0>
Distance protection
3I0>>
3I0>>>
3I0
Info - 23
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SIPROTEC 4
Distance Protection: High Resistance Earth Fault Protection
Tripping characteristic Logarithmic Inverse
t
10
T3I0pmax (P3145)
9
8
T3I0p (P3144)
7
3I0p(P3140)
6
Example: t = 5.8 - 1.35 ln(3I0 / 3I0p)
5
4
3
T3I0min
(P3141)
2
1
0
0
5
10
3I0p Startpoint(P3154)
Distance protection
15
20
25
30
35
3I0 / 3I0p
Info - 24
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SIPROTEC 4
Distance Protection: High Resistance Earth Fault Protection
IEC-characteristic:
normal inverse: t s  
extremly inverse: t s  
0.14
* Tp
0.02
 I 
 
 Ip 
80
 I 
 
 Ip 
very inverse: t s  
1
* Tp
2 
1
ANSI-characteristic:






A
t s   

B
* D
N
 I 

  Ip   1

 

13.5
* Tp
I
1
Ip
long time inverse: t s   I
120
Ip
Inverse
short inverse
long inverse
moderately inverse
* Tp
1
very inverse
extremly inverse
definite inverse
Logarithmic-inverse characteristic:
t s   T 3I 0P max T 3I 0P * ln
Distance protection
3I 0
for t>T3I0Pmin, otherwise: t[s]=T3I0Pmin
3I 0P
Info - 25
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SIPROTEC 4
Distance Protection: High Resistance Earth Fault Protection
T
Inverse-time characteristic: IEC
Tp =1
Pickup: a = 1.1 x 3I0/IP
Reset: b = 1.045 x 3I0/IP
0 ba
Distance protection
20
3I0/Ip
Info - 26
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SIPROTEC 4
Distance Protection: High Resistance Earth Fault Protection
Filter characteristic for stages 3I0>>> and 3I0>>
dB
10
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
-130
-140
-150
-160
0
1
2
3
4
5
6
7
8
9
10
11
f/fn
Distance protection
Info - 27
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SIPROTEC 4
Distance Protection: High Resistance Earth Fault Protection
Filter characteristic for stages 3I0> and Inverse time stage
dB
10
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
-130
-140
-150
-160
-170
0
1
2
3
4
5
6
7
8
9
10
11
f/fn
Distance protection
Info - 28
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SIPROTEC 4
Distance Protection: High Resistance Earth Fault Protection
Earth fault
direction
Inrushstabilisation
EF IE> Echo
EF Fault Det.
SOTF
Teleprotection
>EF Trip rel.
P
Direc. 3I0>>>
P
3I0>>>
=
&
EF>>> Trip
T
&
3I0>>> Def. Time Stage
>EF>>> block
3I0>> Def. Time Stage
3I0> Def. Time Stage
P Direc. 3I0p
P 3I0p
&
=
&
EFp Trip
P3146 AddTdelay
T(3I0/IN)
T
Inverse Time Stage
>EFp block
= Input signal
(binary input)
Distance protection
P
= Parameter
= Output Signal
(alarm, command)
Info - 29
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SIPROTEC 4
Distance Protection: Permissive overreach transfer trip (POTT)
Z1(A)
A
Z 1B(B)
Z1B
T1B
(A)
Z 1B(A)
Z 1(B)
& TS
&
Z1 or
further
zones
B
OR
OR
transmit
Trip
receive
transmit
Trip
receive
OR
TS
OR
&
Z1B
T1B
(B)
&
Z1 or
further
zones
TS
Distance protection
Info - 30
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SIPROTEC 4 Distance Protection
STUB protection for 11/2-circuit breaker arrangement
Busbar A
CB
(A)
Ik = IA+ IB
line isolator 1
feeder 1
IA
stub fault
CB
(C)
IB
feeder 2
line isolator 2
CB
(B)
Release of STUB-stage with open line isolator:
Busbar B
Distance protection
Info - 31
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SIPROTEC 4
Distance Protection: Auto-reclosure
Auto-reclosure (AR)
TRIP
1-pole
3-pole
T1-act
*
RE- TRIP
CLOSE
RE- final
CLOSE TRIP
*
ON
OFF
1st
dead time
T2-act
2nd
dead time
tzone-delay
ADT = Reclosure, when AR at the remote end was successful
DLC = Reclosure only on dead line
RDT = Reduced dead time, if trip had occurred with zone extension
Distance protection
Info - 32
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Synchronism-check
application examples
- combination with internal or
external AR
- activation also for manual closing
(settable)
- asynchronous switching (settable)
functions
(separately settable for AR and
manual closing)
- program selection via parameters:
synchro-check / U1 > U2 < /
U1 < U2 > / U1 < U2 < / overrule
- all programs separately settable
via binary inputs
- synchronous monitoring time, after which
the closing will be blocked (settable)
parameters
measurement
- voltages U<, U>, U
- evaluation of the fundamental wave
- f synchronous switching (0.01 ... 0.03 Hz)
- insensitive against harmonics
- f asynchronous switching (0.03 ... 1 Hz)
-  (1° ... 60°)
Distance protection
- for dead line check all three phases
are controlled
Info - 33
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engersyn1
SIPROTEC 4
Distance Protection: Breaker failure protection
 2 stages
 Internal initiation and via binary inputs
 Extremely short reset time: approx. 10ms
 End-fault protection
 Pole discrepancy supervision
Distance protection
Info - 34
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SIPROTEC 4
Distance Protection
7SA522
with light
or electrical
 exchangeable
 upgradeable
Distance protection
Info - 35
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SIPROTEC 4 Distance Protection
User friendly Operation
Safe operation,
reduced training
requirements
Flexible Functionality and
Open Communication
Fits all applications
One Family
System concept
SIPROTEC and SICAM
Distance protection
Info - 37
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Distance Protection 7SA522
What makes these devices so attractive ?
Log. IN 1
F1
Log.OUT1
>1
Log. IN 2
F2
CFC
Log.IN3
Full Logic
Functionality
Logic inputs from
the matrix to CFC
Logic outputs to the
configuration matrix
Additional logic
Interlocking
Measured values
processing
Distance protection
Info - 38
EV S V13/ Claus/ 23.08.00
Distance Protection 7SA522
What makes these devices so attractive ?
I1 :400.9A
U1:12.22kV
P :+8.03MW
Q :+2.64MVar
Comprehensive
measured value
processing
L1
L2
L3
E
402.1A
401.2A
401.0A
00.0A
% IL
L1 100.0
L2 100.4
L3 100.1
Distance protection
f:50.0Hz
cos
Max450.1A
Max421.2A
Max431.4A
UL-E
100.4
100.3
100.1
UL-L
100.1
100.0
100.4
Info - 39
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Distance Protection 7SA522
What makes these devices so attractive ?
The easy
handling with
DIGSI 4
Distance protection
Info - 40
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