Reliability Assessment Results for Humboldt-Final

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1、2012/2013ISOReliabilityAssessment-FinalStudyResultsStudyArea:PG&EHumboldt-SummerPeakThermalOverloadsLoading(%)Category201420172022IDOverloadedFacilityWorstContingencyCategoryPotentialMitigationSolutionsDescriptionSummerSummerSummerPeakPeakPeakHumboldt-HumboldtBay60kV#2BL-1110.00%

2、109%108%PG&EmaintenanceprojecttoHumboldt-HumboldtBay60kV#2andBG-1/L-1100.00%99%98%reconductortheline.LinemayFAIRHAVEN13.8KVHumboldtBay-Humboldt60kVLine#1overloadwithhighgenerationfromHUMB-S-T-1Humboldt-Eureka60kVLine&HumboldtBay-HumboldtBay60kVandlowfromBetweenHUMBOLDTandHMBLTJTC

3、L-1-1144%140%136%HumboldtNo.260kVLineHumboldtBay115kV.ImplementHumboldtBay-HumboldtNo.260kVLine&operatingproceduretoreduceoutputCL-1-1197%197%198%HumboldtBay-Eureka60kVLinefromHumboldtBayPowerPlant60kVgeneratorsafterfirstcontingencyHumboldtBay-Humbodt60kVline#1Humboldt-HumboldtBa

4、y60kV#260KVandforCcontingenciesifthereisHUMB-S-T-2betweenHMBLTJCandHUMBOLDTCL-1-1137%136%137%HumboldtBay-Eureka60KVoverloadafterlineupgrade.BAYInstallSPStotripnewgenerationHumboldt-Bridgeville115kVLineBL-1106%102%94%projectatRioDellforoverloadRioDellJct-Bridgeville60kVbetweenHUMB

5、-S-T-3Carlotta-RioDellTap60kVHumboldt-Bridgeville115kVLine&Humboldt-ReduceHumboldtBay60kVCL-1-1161%149%132%Trinity115kVLine(moreL-1-1overloads)generationafterfirstcontingencyInstallSPStotripnewgenerationHumboldt-Bridgeville115kVLineBL-1101%96%88%projectatRioDellforoverloadRioDell

6、Jct-Bridgeville60kVbetweenHUMB-S-T-4Carlotta-SwnsFlat-Bridgeville60kVHumboldt-Bridgeville115kVLine&Humboldt-ReduceHumboldtBay60kVCL-1-1155%143%125%Trinity115kVLine(moreL-1-1overloads)generationafterfirstcontingencyHumboldt-Trinity115kVandBridgeville-Bridgeville-Garberville60kVbet

7、weenPG&EprojecttobuildanewHUMB-S-T-5Cottonwood115kV(moreL-1-1andT-1/L-1CL-1-1134%127%34%Bridgville-FrutLdJct60kVBridgeville-Gareberville115kVlineoverloads)Humboldt-Trinity115kVandBridgeville-Bridgeville-Garberville60kVbetweenPG&EprojecttobuildanewHUMB-S-T-6Cottonwood115kV(moreL-1

8、-1andT-1/L-1CL-1-1135%127%17%FrutLdJctan