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1、ElectricalPowerandEnergySystems43(2012)954–960ContentslistsavailableatSciVerseScienceDirectElectricalPowerandEnergySystemsjournalhomepage:www.elsevier.com/locate/ijepesAstudyofcorrelatedfailuresonthenetworkreliabilityofpowertransmissionsystemsa,?abYi-Kue
2、iLin,Ping-ChenChang,LanceFiondellaaDepartmentofIndustrialManagement,NationalTaiwanUniversityofScience&Technology,Taipei106,Taiwan,ROCbDepartmentofComputerScience&Engineering,UniversityofConnecticut,Storrs,CT,USAarticleinfoabstractArticlehistory:Thispaper
3、studiestheperformanceevaluationofapowertransmissionsystemintermsofitsnetworkReceived22March2012topology,whereedgesrepresenttransmissionlinesandnodesrepresentsubsidiarystations.ThepowerReceivedinrevisedform12June2012transmissionnetworkismodeledasastochast
4、ic-?ownetwork(SFN)duetothepossibilityoffailure,par-Accepted13June2012tialfailure,andmaintenanceofedges(transmissionlines).Furthermore,correlationposesaparticularconcernforsuchanSFNbecausethesimultaneousfailureofmultiplecomponentscandangerouslydegradeperf
5、ormance.Wedevelopamethodtomeasuretheimpactofcorrelatedfailuresonnetworkreli-Keywords:ability,whichisde?nedastheprobabilityofdemandsatisfaction.Experimentalresultsshowthatcorre-Powertransmissionnetworklationmayproduceasigni?cantlynegativeimpactonnetworkre
6、liability,especiallywhenthereisahighReliabilityCorrelatedfailurelevelofnetworkdemand.Thus,theproposedapproachcapturesthein?uenceofcorrelationonnetworkStochastic-?ownetwork(SFN)reliabilityandoffersamethodtoquantifytheutilityofreducingcorrelation.ó2012Else
7、vierLtd.Allrightsreserved.1.IntroductionLin’sworks[10,11]formulatedanSFNproblemwithmulti-stateedges,computingnetworkreliabilityintermsofminimalpathsDuetothepossibilityoffailure,partialfailure,andmainte-(MPs),whereanMPisapathwhosepropersubsetsarenolongern
8、ance,apowertransmissionsystemmaybecharacterizedasasto-paths.Agreatmanystudieshavealsodevotedaconsiderablechastic-?ownetwork(SFN),whichexhibitsmultiplelevelsofamountofresearch[8–20]toevaluatethenetworkreliabilityofperforman
