VSC-HVDC System Protection A Review of Current Methods文稿

《VSC-HVDC System Protection A Review of Current Methods文稿》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、1VSC-HVDCSystemProtection:AReviewofCurrentMethodsJaredCandelaria,StudentMember,IEEE,andJae-DoPark,Member,IEEEAbstract—Currentlyclassicalthyristor-basedhighvoltagedi-rectcurrent(HVDC)systemsholdthemarketinbulkpowertransmission.However,recentadvancesinsemiconductortech-nologyhaveledtovoltage

2、sourceconverterbasedHVDC(VSC-HVDC)systemsbecomingaviablecompetitor.NotonlyisVSC-HVDCacompetitorfortransmissionbutitcanalsobeusedinmulti-terminalsystems,whichhavebecomeanattractiveoptionforrenewableenergyapplicationsorfordistributioninlargecities.AsmoreandmoreVSC-HVDCsystemsareinstalled,the

3、protectionofthesesystemsmustbetakenintoaccount.ThispaperexploresdifferentoptionsandideasforVSCsystemprotection.IndexTerms—HVDC,VSC,ProtectionI.INTRODUCTIONRecentlyvoltagesourceconverterbasedhighvoltagedi-Fig.1.VSCOperation(a)Normal.(b)PositiveLine-to-GroundFault.rectcurrent(VSC-HVDC)system

4、sarebecomingmoreofacompetitorofclassicalthyristor-basedHVDCsystems[1].Astheconverterpowerratingincreasesitmayonedayreplacethefreewheelingdiodesactabridgerectifierandfeedthefaultthyristor-basedHVDC.VSC-HVDCisattractivebecause,un-[7],[9],[10],[13]–[17],asshowninFig.1.Thetypesoffaultslikeclass

5、ical-HVDC,noreactivepowersupportisneededtopossibleonaHVDCsystemareasfollows.operatethesystem.InfactVSC’scanproducereactivepower,Positivelinetogroundfaultandcontrolactiveandreactivepowerindependently[2].ThisNegativelinetogroundfaultcontrollabilityallowsVSC-HVDCconverterstooperateinPositi

6、velinetonegativelinefaultsystemswithlittleornoACsupport,somethingthatclassicalOvercurrentHVDCcannotachievewithoutexpensivesupport[3]–[6].OvervoltageVSC’sarealsoadvantageousinmulti-terminalsystems.Multi-terminalsystemsconsistofthreeormoreconverterstocreateAchallengeassociatedwiththeprotec

7、tionofVSC-HVDCaHVDCnetwork.Applicationsofmulti-terminalsystemssystemsisthatthefaultcurrentmustbedetectedandextin-includedistributionintolargecities,renewableenergyinter-guishedveryquicklyastheconvertersfaultwithstandratingconnects,andevenshippowersystems[7]–[1