WECC MIC Meeting Report on Operating Transfer Capability Policy Committee (OTCPC) Vancouver, BC October 24 & 25, 2007.

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Presentation transcript:

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

Major Topics 2007 Winter Study Results MIC issues -- California / Mexico Subregion -- Northwest Subregion -- Southwest Subregion -- Rocky Mountain Subregion MIC issues

California / Mexico Subregion – Winter 2007-2008 Path Name Path Number Rating (MW) Proposed 2007-2008 Winter OTC (MW) 2007 Summer OTC 2006-2007 Winter OTC California COI (N-S) 66 4800 (N-S) 4800 (N-S) PDCI (N-S) 65 3100 (N-S) Midway - Los Banos (S-N) 15 5400 (S-N) SCIT NA 19365 15,150* 16,100 14,750 Midway - Vincent (N-S) 26 4000 (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.

Northwest Subregion Winter 2007-2008 Path Number Rating (MW) 2007-2008 Winter OTC (MW) 2006-2007 Winter OTC (MW) 2007 Summer OTC (MW) COI + NW-Sierra 66 4800 (N-S) 3675 (S-N) PDCI 65 3100 (N-S) 3100 (S-N) 2200 (S-N) NW-Sierra 76 300 (N-S) 300 (S-N) 300 (N-S) 300 (S-N) + PDCI N/A 7900 (N-S) 6775 (S-N) 7900 (N-S) 5875 (S-N) NJD 73 Not Rated 7700 (N-S) 7800 (N-S) Brownlee East 55 1850 (W-E) Montana-NW 8 2200 (E-W) 1350 (W-E) 2200 (E-W) 1070-1300 (W-E) 650-1250 (W-E) MT-SE Not Rated (N-S) Not Rated (S-N) *600 (N-S) *462-600 (S-N) 600 (N-S) 351-600 (S-N) HL 415-600 (S-N) LL 282-600 (S-N) West of Hatwai 6 4277 (E-W) 4036 (E-W) 4065 (E-W)

Northwest Subregion Winter 2007-2008 Path Number Rating (MW) 2007-2008 Winter OTC (MW) 2006-2007 Winter OTC (MW) 2007 Summer OTC (MW) NW-Canada 3 3150 (N-S) 2000 (S-N) Sierra-Idaho 16 500 (N-S) 360 (S-N) 262 (S-N) Sierra-PG&E 24 160 (E-W) 160 (W-E) 150 (E-W) 70 (W-E) 105 (E-W) 100 (W-E) Sierra-Utah 32 440 (E-W) 235 (W-E) 370 (E-W) Idaho-NW 14 2400 (E-W) 1200 (W-E) 2304 (E-W) *1200 (W-E) 1090 (W-E) Midpoint-Summer Lake 75 1500 (E-W) 400 (W-E) *400 (W-E) Bridger West 19 2200 (E-W) Borah West 17 2557 (E-W) *2557 (E-W) 2307 (E-W) Path C 20 1000 (N-S) 1000 (S-N) 820 (N-S) 785-950 (S-N) 775-900 (S-N) Montana-Idaho 18 356 (N-S) 337 (S-N) *256 (S-N) 234 (S-N) 250-270 (S-N) Alberta-BC 1 1000 (E-W) 1160 (W-E) *Path was studied for the Winter 2007-2008 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

Rocky Mountain Subregion Winter 2007-2008 Path Rating (MW) 2007-08 Winter OTC (MW) 2007 Summer OTC (MW) Spring OTC (MW) 2006-07 Winter Yellowtail – N 510 Yellowtail – S 625 TOT1A 650 TOT2A 690 660* 690* TOT3 1605 1506*** 1536*** 1590** 1521 TOT5 1680 TOT7 890 * 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

Southwest Subregion Winter 2007-2008 PATH NAME WECC PATH NUMBER RATING OF PATH (MW) 2007-08 WINTER SOL (MW) 2006-07 WINTER SOL (MW) 2007 SUMMER SOL (MW) Four Corners West 22 2325MW Nominal (Nomogram) Cholla-Pinnacle Peak 50 1200MW Note 1 - The EOR was not studied for series comp replacement.

Implementation Time Schedule These limits apply to the 2007-2008 Winter operating season starting November 1, 2007, and ending no later than March 31, 2008 pending completion of: The Operating Procedures Review Group’s 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.

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?