Presentation on theme: "WECC MIC Meeting Report on Operating Transfer Capability Policy Committee (OTCPC) Vancouver, BC October 24 & 25, 2007."— Presentation transcript:
1 WECC MIC Meeting Report on Operating Transfer Capability Policy Committee (OTCPC) Vancouver, BCOctober 24 & 25, 2007
2 Major Topics 2007 Winter Study Results MIC issues -- California / Mexico Subregion-- Northwest Subregion-- Southwest Subregion-- Rocky Mountain SubregionMIC issues
3 California / Mexico Subregion – Winter 2007-2008 Path NamePath NumberRating(MW)ProposedWinter OTC (MW)2007Summer OTCWinter OTCCaliforniaCOI (N-S)664800 (N-S)4800 (N-S)PDCI (N-S)653100 (N-S)Midway - Los Banos (S-N)155400 (S-N)SCITNA1936515,150*16,10014,750Midway - Vincent (N-S)264000 (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.
5 Northwest Subregion Winter 2007-2008 PathNumberRating(MW)Winter OTC (MW)Winter OTC (MW)2007 SummerOTC (MW)NW-Canada33150 (N-S)2000 (S-N)Sierra-Idaho16500 (N-S)360 (S-N)262 (S-N)Sierra-PG&E24160 (E-W)160 (W-E)150 (E-W)70 (W-E)105 (E-W)100 (W-E)Sierra-Utah32440 (E-W)235 (W-E)370 (E-W)Idaho-NW142400 (E-W)1200 (W-E)2304 (E-W)*1200 (W-E)1090 (W-E)Midpoint-Summer Lake751500 (E-W)400 (W-E)*400 (W-E)Bridger West192200 (E-W)Borah West172557 (E-W)*2557 (E-W)2307 (E-W)Path C201000 (N-S)1000 (S-N)820 (N-S)(S-N)(S-N)Montana-Idaho18356 (N-S)337 (S-N)*256 (S-N)234 (S-N)(S-N)Alberta-BC11000 (E-W)1160 (W-E)*Path was studied for the Winter Operating SeasonNote 1 - New Borah line, shunt capacitor and Hatlay is a three terminal line as why Borah West rating increasedNote 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 Rocky Mountain Subregion Winter 2007-2008 PathRating(MW)Winter OTC (MW)2007Summer OTC (MW)SpringOTC (MW)WinterYellowtail – N510Yellowtail – S625TOT1A650TOT2A690660*690*TOT316051506***1536***1590**1521TOT51680TOT7890* 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 OutagesNote 1 - TOT1A –There are planned outages that would limit the 650MWNote 2 - WAPA will talk to PAC as why TOT2B and 2C are not being studied
7 Southwest Subregion Winter 2007-2008 PATH NAMEWECC PATH NUMBERRATING OF PATH (MW)WINTER SOL (MW)WINTER SOL (MW)2007 SUMMER SOL (MW)Four Corners West222325MW Nominal(Nomogram)Cholla-Pinnacle Peak501200MWNote 1 - The EOR was not studied for series comp replacement.
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 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, andOperating training and direction required to ensure operation within the established operating limits.
9 MIC Issues? Order 890 – Transparency SOL vs OTC – NERC current draft standardsATC 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?