浅析地铁直流牵引变电所的保护原理

2003643AbstractThepaperintroducestheprotectiveconfigurationofDCswitchgearintractionpowersubstationofsubway,illustratesindetailtheprincipleforprotectionofmainfeedersi.e.highcurrenttrippingprotection,currentupslopeandgainprotection,definite-timeofovercurrentprotection,double-endinter-trippingprotection,OCSthermaloverloadprotectionandautomaticre-closureetc.Keywords:Subway;DC;protectionU231+.8A1007-936X200306-0043-04SiemensDPU96SechronSEPCOSAdtranzDCP1061133kV1500V750V750V1500V2210003025-3429900-2917212101ABCc213214213214213214213421342134200364423/11211212213214212012023120122022ImaxΔU323[1][2]31ImIKImKK132144ΔT235412di/dtAdi/dtAΔIdi/dtAΔT2ΔT2ΔT32003645di/dtAdi/dtΔIΔIdi/dtAΔICΔI43di/dtAΔT2di/dtΔIaΔI45bΔICdi/dtA44cΔICdi/dtACAΔT2CC41ΔT3ΔT3ΔIΔT325di/dtBdi/dtΔT1di/dtBΔT1533IΔTIΔTIΔT343.1—3.3GB50157-92[3]8.2.211di/dtBΔIΔT1di/dtB2di/dtB2003646[4]35TalarmTtripTreclosure667736GB50157-92[3]8.2.22anmk1kmanmk4[1][J]20013[2]1500V[J]200125146466[3]GB/T50157-92[S][4][J]200112003-08-1030010040201011.523456t1t2t3TtripTalarmTreclosure