Contingency Ranking for Voltage Stability Analysis of Large-Scale Power Systems

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1、IEEETRANSACTIONSONPOWERSYSTEMS,VOL.15,NO.3,AUGUST20001093ContingencyRankingforOn-LineVoltageStabilityAssessmentZhihongJiaandB.Jeyasurya,SeniorMember,IEEEAbstract—Voltagestabilityhasrecentlybecomeachallengingberequiredforthesecureoperationofinterconnectedpowerproblemformanypowersystems.Continge

2、ncyscreeningandsystems.ranking(CS&R)isoneoftheimportantcomponentsofon-lineContingencyscreeningandranking(CS&R)isoneofthevoltagestabilityassessment.TheobjectiveofCS&Ristoquicklyimportantcomponentsofon-linevoltagestabilityassessment.andaccuratelyselectashortlistofcriticalcontingenciesfromalargel

3、istofpotentialcontingenciesandrankthemaccordingThepurposeofcontingencyscreeningandrankingistorapidlytotheirseverity.Suitablepreventivecontrolactionscanbeandaccuratelydeterminewhichcontingenciesmaycauseimplementedconsideringcontingenciesthatarelikelytoaffectthepowersysteminstabilityaccordingtot

4、heirseverity.Suitablepowersystemperformance.Aneffectivemethodforcontingencypreventivecontrolactionscanbeimplementedconsideringrankingisproposedinthispaper.Thismethodcalculatesthecontingenciesthatarelikelytoaffectthepowersystemvoltagestabilitymarginconsideringbranchoutages.Testresultsbasedonthe

5、IEEE300buspowersystem,a600buspowersystemperformance.Recentlymanymethodsforvoltagestabilityaswellastwoutilitysystems(197busand1254bus)arepresented.contingencyscreeningandrankinghavebeenproposed[6]–[9].Someofthesemethodsarecomputationallydemanding.TheIndexTerms—Contingencyscreeningandranking,pow

6、ersystemvoltagestability,securityassessment.objectiveofthispaperistoproposeacontingencyrankingmethodforon-linevoltagestabilityassessment.Theeffec-tivenessofthismethodisdemonstratedbyapplyingittorankI.INTRODUCTIONthecontingenciesoftheIEEE300buspowersystem,a600HEINCREASINGenergydemandsonpowersys

7、temsbuspowersystemaswellastwoutilitysystems(197busandTcoupledwithalowrateofadditionalcapacityinstallation1254bus,respectively).arecausingthepowersystemstobeoperatedclosetotheirTheorganizationofthepaperisasfollows.SectionIIpresentssecuri