Transcript No Slide Title

AESO Export Capability Workshop
February 16, 2006
Metropolitan Centre, Calgary
AB to BC Transfer
BCTC perspective
Calgary, Alberta - Feb 16, 2006
The BC Transmission System
Snapshot:
• 18,000 km circuit transmission
lines
• 287 switching, distribution and
capacitor stations
• Control Centers
• 1 System Control Center
• 4 Area Control Centers
• 244 microwave and repeater
sites
• Transmission rights-of-way
• Interconnected to Alberta and
the Pacific Northwest for over
three decades
Feb. 16, 2006
Page 3
BCTC Bulk Transmission System Overview
(export to US)
GMS/PCN
MCA
REV
WSN
ACK
KLY
NIC
5L91
5L76 & 5L79
5L87
5L98
LM &
VI
CBK
SEL
5L94
5L92
VAS
5L96
5L81 & 5L82
SEL area gen
5L51 & 5L52
2L112
BPA
Feb. 16, 2006
Page 5
BCTC Bulk Transmission System Overview
(import from US)
GMS/PCN
MCA
REV
WSN
ACK
KLY
NIC
5L91
5L76 & 5L79
5L87
5L98
LM &
VI
CBK
SEL
5L94
5L92
VAS
5L96
5L81 & 5L82
SEL area gen
5L51 & 5L52
2L112
BPA
Feb. 16, 2006
Page 6
Transmission Line Forced Outage (3 pole)
Approx Data
Forced
outage per
year
500kV Lines
Circuit Length
(km)
3 Phase forced
outages
Data Years
5L76 (note 1 )
118
65
22
2.98
5L79 (note 2)
118
70
21
3.35
5L81 *
264
55
22
2.52
5L82 *
248
62
22
2.84
5L91 (note 3)
223
181
22
8.29
5L92 *
180
62
22
2.84
5L94 *
319
146
20
7.30
5L98 (note 4)
302
381
22
17.45
5L51 & 5L52
36 / 36
1
22
0.05
5L91 & 5L98
3 (note 5)
22
0.14
5L76 & 5L79
4
22
0.18
5L81 & 5L82
3
22
0.14
5L1/2/3/4/7 double
contingencies
approx 278
14
22
0.64
5L11/12/13 double
contingencies
approx 330
12
22
0.55
Notes:
1.
SPR provided
in late 2002
2.
SPR provided
in mid 2003
3.
SPR to be
provided in
2006
4.
SPR provided
in 2005
5.
Include
sequential
ctgs in less
than 5 minutes
6.
* SPR
provided
Feb. 16, 2006
Page 7
BCTC RAS
• RAS arms generation shedding, line tripping,
reactive equipment switching, and calculates
transfer limits
• RAS armed in real time dynamically
• RAS arming based on actual flows
• TSA runs every 4 minutes
• TSA arms RAS
• RAS armed automatically
Feb. 16, 2006
Page 8
Feb. 16, 2006
Page 9
Questions?
Feb. 16, 2006
Page 10