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1、2009InternationalConferenceonInformationandMultimediaTechnologyAStudyontheEquivalentConductorRepresentationofACElectricRailwaySystemHanminLee,SehchanOh,GildongKim,CheonheonAnAdvancedEMUResearchCorps,SETeamKoreaRailroadResearchInstitute,HanshinConstructionCo.,Ltd.
2、360-1,Woram-dong,Uiwang-si,Gyeongi-do,Korea./Seocho-Gu,Korea{hanmin,soh,gdkim}@krri.re.kr,ancheon@nate.comAbstract—Thispaperpresentstheequivalentconductortotalimpedanceofthese5conductorsbyplacingthemrepresentationofACelectricrailwaysystems.Sincethefaultparallel.T
3、he5-conductorreducedequivalentmodelisnotcurrentflowsthroughthecatenarysystem,thecatenarysuitableforthefaultlocationanalysisinthispaperbecausesystemmustbemodeledexactlytoanalyzefaultcurrentthemodeldoesnotexpresstheboostwiresandimpedancemagnitudeandfaultlocation.In
4、thispaper,theequivalentbonds.Tomakethemodelappropriateforaanalysis,the9-conductormodelingtechniquethatincludesboostwiresandconductorreducedequivalentmodelissuggestedbyusingimpedancebondsisintroduced,basedonthecharacteristicsofPSCAD/EMTDC[6].ACelectricrailway.Afte
5、robtainingtheequivalentconductorAnexistingfaultlocationanalysisistocalculatecurrentmodeling,therailwaysystemisconstructedforcomputerratiobyestimatingfaultcurrentontwoautotransformers[7].simulationbyusingPSCAD/EMTDC.StudiesforfaultcurrentHowever,inKoreanelectricra
6、ilwaysystem,railwayarecarriedoutbytheproposedmodel.substationsarelocatedperabout40km,and3auto-transformersareplacedassectioningpostandparallelpostbetweentwosubstations.Thatis,thedistancebetweentwoKeywords-ACelectricrailwaysystem,Faultanalysisautotransformersisabo
7、ut10km.Althoughthisanalysisisveryaccurateanditslocatingerrorrateis1~2%,theactuallocatingerrorbecomes100~200mbecausethedistanceI.INTRODUCTIONbetweentwofaultcurrentdetectorsisabout10km.AnelectricrailwaysystemhasanumberofadvantagesinBecausethefaultedcatenarysystemma
8、ycauserailwaytermsoftrafficcapability,energyefficiency,operationalcostvehiclesoperationinterrupted,theyshouldberestoredasandenvironmentalfriendlinessincomparis
