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Western Electricity Coordinating Council 1 WECC MIC Meeting Report on Operating Transfer Capability Policy Committee (OTCPC) Vancouver, BC October 24 &

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Presentation on theme: "Western Electricity Coordinating Council 1 WECC MIC Meeting Report on Operating Transfer Capability Policy Committee (OTCPC) Vancouver, BC October 24 &"— Presentation transcript:

1 Western Electricity Coordinating Council 1 WECC MIC Meeting Report on Operating Transfer Capability Policy Committee (OTCPC) Vancouver, BC October 24 & 25, 2007

2 Western Electricity Coordinating Council 2 Major Topics – 2007 Winter Study Results -- California / Mexico Subregion -- Northwest Subregion -- Southwest Subregion -- Rocky Mountain Subregion – MIC issues

3 Western Electricity Coordinating Council 3 Path NamePath Number Rating (MW) Proposed Winter OTC (MW) 2007 Summer OTC (MW) Winter OTC (MW) California COI (N-S) (N- S) PDCI (N-S) (N-S) Midway - Los Banos (S-N) (S-N) SCIT NA ,150*16,10014,750 Midway - Vincent (N- S) (N-S) The increase in SCIT is mainly due to the new Miguel – Sycamore #2 230 kV line, which came in service late 2006, the new Miguel – Old Town 230 kV line, and 2x63 MVAr shunt capacitors at Miguel 230 kV. Note 1 - The EOR was not studied for series comp replacement. California / Mexico Subregion – Winter

4 Western Electricity Coordinating Council 4 Northwest Subregion Winter Path Number Rating (MW) Winter OTC (MW) Winter OTC (MW) 2007 Summer OTC (MW) COI + NW-Sierra (N-S) 3675 (S-N) 4800 (N-S) 3675 (S-N) 4800 (N-S) 3675 (S-N) 4800 (N-S) 3675 (S-N) PDCI (N-S) 3100 (S-N) 3100 (N-S) 2200 (S-N) 3100 (N-S) 2200 (S-N) 3100 (N-S) 2200 (S-N) NW-Sierra76300 (N-S) 300 (S-N) 300 (N-S) 300 (S-N) 300 (N-S) 300 (S-N) 300 (N-S) 300 (S-N) COI + NW-Sierra + PDCI N/A7900 (N-S) 6775 (S-N) 7900 (N-S) 5875 (S-N) 7900 (N-S) 5875 (S-N) 7900 (N-S) 5875 (S-N) NJD73Not Rated 7700 (N-S) 7800 (N-S) Brownlee East (W-E) Montana-NW82200 (E-W) 1350 (W-E) 2200 (E-W) (W-E) 2200 (E-W) (W-E) 2200 (E-W) (W-E) MT-SEN/ANot Rated (N-S) Not Rated (S-N) *600 (N-S) * (S-N) 600 (N-S) (S-N) HL (S-N) LL 600 (N-S) (S-N) West of Hatwai64277 (E-W)4036 (E-W) 4065 (E-W)

5 Western Electricity Coordinating Council 5 Northwest Subregion Winter Path Number Rating (MW) Winter OTC (MW) Winter OTC (MW) 2007 Summer OTC (MW) NW-Canada33150 (N-S) 2000 (S-N) 3150 (N-S) 2000 (S-N) 3150 (N-S) 2000 (S-N) 3150 (N-S) 2000 (S-N) Sierra-Idaho16500 (N-S) 360 (S-N) 500 (N-S) 262 (S-N) 500 (N-S) 262 (S-N) 500 (N-S) 262 (S-N) Sierra-PG&E24160 (E-W) 160 (W-E) 150 (E-W) 70 (W-E) 150 (E-W) 70 (W-E) 105 (E-W) 100 (W-E) Sierra-Utah32440 (E-W) 235 (W-E) 370 (E-W) 235 (W-E) 370 (E-W) 235 (W-E) 370 (E-W) 235 (W-E) Idaho-NW (E-W) 1200 (W-E) 2304 (E-W) *1200 (W-E) 2304 (E-W) 1200 (W-E) 2304 (E-W) 1090 (W-E) Midpoint-Summer Lake (E-W) 400 (W-E) 1500 (E-W) *400 (W-E) 1500 (E-W) 400 (W-E) 1500 (E-W) 400 (W-E) Bridger West (E-W) Borah West (E-W)*2557 (E-W)2307 (E-W)2557 (E-W) Path C (N-S) 1000 (S-N) 820 (N-S) (S-N) 820 (N-S) (S-N) 820 (N-S) (S-N) Montana-Idaho18356 (N-S) 337 (S-N) 356 (N-S) *256 (S-N) 356 (N-S) 234 (S-N) 356 (N-S) (S-N) Alberta-BC11000 (E-W) 1200 (W-E) 1000 (E-W) 1160 (W-E) 1000 (E-W) 1160 (W-E) 1000 (E-W) 1160 (W-E) *Path was studied for the Winter Operating Season Note 1 - New Borah line, shunt capacitor and Hatlay is a three terminal line as why Borah West rating increased Note 2 - The following numbers was not studied due to any physical flow in winter season. It was decided to stay with pervious rating. 400 MW of Summer Lakes to Midpoint & 1200 MW of Nwest to Idaho 1200MW E to W

6 Western Electricity Coordinating Council 6 Rocky Mountain Subregion Winter PathRating (MW) Winter OTC (MW) 2007 Summer OTC (MW) 2007 Spring OTC (MW) Winter OTC (MW) Yellowtail – N 510 Yellowtail – S 625 TOT1A650 TOT2A690660*690*660*690* TOT ***1536***1590**1521 TOT51680 TOT7890 * WITH NUCLA AT 80 MW AND SW COLO LOAD 100 MW ** SPRING LIMIT ON TOT3 IS PREVIOUS SUMMER LIMIT *** Miracle Mile-Laramie and Beaver Creek-Hoyt Construction Outages Note 1 - TOT1A –There are planned outages that would limit the 650MW Note 2 - WAPA will talk to PAC as why TOT2B and 2C are not being studied

7 Western Electricity Coordinating Council 7 Southwest Subregion Winter PATH NAMEWECC PATH NUMBER RATING OF PATH (MW) WINTER SOL (MW) WINTER SOL (MW) 2007 SUMMER SOL (MW) Four Corners West222325MW Nominal (Nomogram) 2325MW Nominal (Nomogram) 2325MW Nominal (Nomogram) 2325MW Nominal (Nomogram) Cholla-Pinnacle Peak501200MW Note 1 - The EOR was not studied for series comp replacement.

8 Western Electricity Coordinating Council 8 Implementation Time Schedule These limits apply to the Winter operating season starting November 1, 2007, and ending no later than March 31, 2008 pending completion of: –The Operating Procedures Review Groups acceptance of the associated winter operating procedures for each of the interties and those operating procedures (including system monitoring and curtailment responsibilities) being implemented, and – Operating training and direction required to ensure operation within the established operating limits.

9 Western Electricity Coordinating Council 9 MIC Issues? Order 890 – Transparency SOL vs OTC – NERC current draft standards ATC calculations – –Is it based on TTC or SOL? Does it need to be a change in OTC calculation due to MRTU Implementation? Reserves – Load Carrying Responsibilities in respect to OTC determination?


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