短路电流对高压断路器及其开断电流选择的影响-袁洪平

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3320091:2008-09-23:(1976-),,,,,。0,,,。,,、。,,。1,,,,。1(a)。,1(b)。,WLL。,,,,,X,,,,。[1][2]2。:ik──ip──ip(0)──(t=0)inp———inp(0)———(t=0),(,333300):,,,。:;;:TM561:AAbstract:Theinfluenceofshort-circuitcurrentonhigh-voltagecircuitbreakerwhenthehigh-voltagecircuitbreakercutshort-circuitcurrentwasdiscussed.Moreover,calculationofshortcurrentbreakingtimeandthenon-periodiccomponentpercentageestimatemethodwerecollected.Attheend,thewaytochoosereasonableratingbreakingcurrentofhigh-voltagecircuitbreakeraccordingtotheshort-circuitcurrent.KeyWords:short-circuitcurrent;high-voltagecircuitbreakers;breakingcurrent  !#!$%1(a)(b):WL,L。(a)(b):1006-348X(2009)01-0042-044233200916~110kV30~40220kV10~25500kV10~2510~2010kVZN63A,VS1,VD430~5010kVSF6LN2(≤6010kVZW38,ZW8,VS2a15~6010kVSF6LW3(40~6035kVZN23,ZN85,ZN□60~7035kVSF6SF1(2),LN2,HD460~6535kVZW38,ZW7,ZW1735~6535kVSF6LW36,LW34,LW855~6560kVSF6LW36,LW3326~65110kVSF6LW36,LW3330~50110kVGIS(SF6)ZF6-12636220kVGIS(SF6)ZF6A-25230220kVSF6LW,LW5320~30500kVSF6LW53,LW5615~34500kVGIS(SF6)ZF15182、p(t)np(t)ish──I∞──IP──2,()()。,。。,,Ip=I∞=I″。(:IpiD;I∞inD0ik=iD+inD=iD;I″iD,)。(t=0)α,L/R,,t=0.2s。2,,,,,(),,。,、,,[3]。Ik(t)=I2+I2姨。,,,,,;,,。,Ikt,,,,,,。3。3.1,tbt=tpt1+tin。tpt1();tin。6~500kV1,2。16~500kV/ms210~500kV/ms3.2β433320091β=inp(t)/2姨Ip(t)≈e-t/τ:inp(t)=inp(0)e-t/ττ=L/R=X/314R()ttbtu=0(t=0),i0。inp(0)=|i0-I″m|≈I″m=2姨I″。,3。3β,tbt,3()。33,t(tbt)τ,ifzt,Idz。4[3][4],。。1),20%,,20%,,Inbr≥Ip。20%,,(2姨Ip(t)+inp(t))≤2姨INbr(1+βe/100),,βe。2),,。。,,。(DL/T402-1999),。,110kV1.5,1.3。3),15%。,,。[4]51),,。2)tbt,,。,,,,tbt,,,。(1、2),,35kV0.06~0.11s,10kV0.045s;110kV0.06~0.09s,0.04~0.07s;220~500kV,0.025~0.054s。,,20%,,20%,。3),、,,,,。,,,,ττ0.255(10-100MVA)0.1110.1910.048(100MVA)0.1270.127443320091。,,。、,。、,。,,,。2.2。,。,;,。,,。2.3GSMCDMA,。3,、、,、,。,,,,。,,,,。4→→,。,。、、,。,,。,,。,,,,。[1].[J].,2000,8:23-25.[2].[J].,2002,4:16-19.[3].[J].,2006,1:14-17.,。、、、。4),、、,。5),,,。:[1],,,..:.[2].(2)[M].:.[3].()[M].:.[4].[M].:.......................................................(22)▲99。7000(CCS)。,,25。,,,310。,30,201510,CCS。...........................................................▲▲▲▲▲▲▲▲▲▲▲▲▲▲...........................................................▲............▲45

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