Reliability Assessment Results for Central Valley-Sierra-Final

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1、2012/2013ISOReliabilityAssessment-FinalStudyResultsStudyArea:PG&ECentralValleySierra-SummerPeakThermalOverloadsCategoryLoading(%)IDOverloadedFacilityWorstContingencyCategoryPotentialMitigationSolutionsDescription201420172022Siera-T-01Drum-Higgins115kVLineNormalAN-0

2、82%95%101%Drum-PlacerareareinforcementSiera-T-02Placer115/60kVTransformerNo.1NormalAN-090%95%104%Drum-PlacerareareinforcementOverloadduetoautomaticpick-upofDrum-GrassValley-Weimar60kVColgate-GrassValley60kVLineradiallyservedload.PotentialSiera-T-03BL-1/G-1110%118%1

3、31%Line_ROLLINSF9.11UnitID1mitigationistodisableautomaticpick-upscheme.GoldHill230/115kVTransformerNo.Siera-T-04GoldHill230/115kVTransformerNo.2BN-187%91%101%Drum-Placerareareinforcement1GoldHill230/115kVTransformerNo.Siera-T-05GoldHill230/115kVTransformerNo.1BN-18

4、7%91%101%Drum-Placerareareinforcement2Pease-Marysville-Harter60kVSiera-T-06Palermo-Pease115kVLineBL-1/G-199%106%70%Interimoperationsolution.Line_GRNLEAF213.80UnitID1Pease-Marysville-Harter60kVSiera-T-07Pease115/60kVTransformerNo.2BL-1/G-150%96%107%Addsecond115/60kV

5、bank.Line_GRNLEAF213.80UnitID1Siera-T-08Placer115/60kVTransformerNo.1HALSEYF6.60UnitID1BN-188%93%101%Drum-PlacerareareinforcementBUSFAULTAT30330RIOOSO230.00Siera-T-09Bogue-RioOso115kVLineC1Bus102%N/AN/AInterimoperationsolution.Bus1BUSFAULTAT30337GOLDHILL230.00Siera

6、-T-10Drum-Higgins115kVLineC1Bus84%98%110%Drum-PlacerareareinforcementBus2GoldHill230/115kVTransformerNo.BUSFAULTAT32018GOLDHILL115.00Siera-T-11C1Bus87%91%101%Drum-Placerareareinforcement2Section1EBUSFAULTAT30330RIOOSO230.00Siera-T-12Pease-RioOso115kVLineC1Bus110%N/

7、AN/AInterimoperationsolution.Bus1BUSFAULTAT30337GOLDHILL230.00Siera-T-13RioOso-Atlantic230kVLineNo.1C1Bus101%60%65%Interimoperationsolution.Bus2Siera-T-14Bogue-RioOso115kVLineRIOOSO230kVBus1and2-CB202FailureC2StuckBkr131%N/AN/AInterimoperationsolution.CaliforniaISO

8、/MID/RTOctober31,2012Page1of172012/2013ISOReliabilityAssessment-FinalStudyResultsStudyArea:PG&ECentralValleySierra-SummerPeakThermalOverloadsCate