Reliability Assessment Results for Valley Electric Association with renewables-Final

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1、2012/2013ISOReliabilityAssessment-FinalStudyResultsStudyArea:ValleyElectricAssociation-SummerPeakwithrenewablesThermalOverloadsLoading(%)Category201420172022IDOverloadedFacilityWorstContingencyCategoryPotentialMitigationSolutionsDescriptionSummerSummerSum

2、merPeakPeakPeakCANYON138kV---COLDCREKVEA-T-1BL-1101%53%4%138kVCkt#1NoticeNVE.ConsideroperationCANYON138kV---SNOWMTNLinePAHRUMP138.0toVISTA138.0solutiontotripVEAloadsasanVEA-T-2BL-1101%53%4%138kVCkt#1Circuit1interimmitigationbeforeCharleston-Vista138kVline

3、isinserviceNWEST138kV---SNOWMTNVEA-T-3BL-1102%69%5%138kVCkt#1CANYON138kV---COLDCREKBreakerVEA-T-4CNA109%96%138kVCkt#1FailureCANYON138kV---SNOWMTNBreakerVEA-T-5CNA109%96%CollaboratewithNVEtodevelopSPS138kVCkt#1FailuretoshedloadpriortogenerationCOLDCREK138k

4、V---RADARBrkrFailVISTA-PAHRUMP138&VISTA-BreakerVEA-T-6CNA104%91%comingonlineinVEA,orre-design138kVCkt#1CHARLESTON1381.000CatCBKRFltFailurebaypositionsforthetwo138kVlinesISTAP138kV---RADAR138BreakeratVista138kVsub.VEA-T-7CNA104%90%kVCkt#1FailureNWEST138kV-

5、--SNOWMTNBreakerVEA-T-8CNA110%98%138kVCkt#1FailureCANYON138kV---COLDCREKBreakerVEA-T-9C100%90%85%CollaboratewithNVEtodevelopSPS138kVCkt#1FailuretoshedloadpriortogenerationCANYON138kV---SNOWMTNBrkrFailPAHRUMP-VISTA138&PAHRUMP-BreakerVEA-T-10C101%91%85%comi

6、ngonlineinVEA,orre-arrange138kVCkt#1GAMEBIRD1381.000CatCBKRFltFailurebaypositionsforthetwo138kVlinesNWEST138kV---SNOWMTNBreakeratPahrump138kVsub.VEA-T-11C102%91%87%138kVCkt#1FailureCANYON138kV---COLDCREKNoticeNVE.DevelopSPStoopenVEA-T-12CL-1/L-1100%NotSol

7、vedNotSolvedthe138kVtiewithVEAatLathrop138kVCkt#1LinePAHRUMP138.0toVISTA138.0undersecondcontingency,orCANYON138kV---SNOWMTNVEA-T-13Ckt1_LineGAMEBIRD138.0toTHSNDAIRCL-1/L-1101%NotSolvedNotSolvedmanuallyopenthe138kVtiewith138kVCkt#1138.0Ckt1NVEatLathropafte

8、rfirstcontingencyNWEST138kV---SNOWMTNtoisolatepotentialimpact/bloackoutVEA-T-14CL-1/L-1102%NotSolvedNotSolved138kVCkt#1fromthevicinityarea(Zone183/187)CaliforniaISO/MID/RTOctober31,2012Page1of332012/2013ISOReliabili