罗氏线圈雷电流传感器研究

1,2(1.武汉大学,武汉430072;2.湖北超高压输变电公司,武汉430050)[]通过对大电流测量传感器的分析,提出罗氏线圈设计原则,设计出雷电流传感器线圈,并对线圈的输出特性的实际测量,验证设计结果的正确性[]雷电流;罗氏线圈;电阻采样法[]TM642[]A[]10063986(2009)03001603StudyonLightningCurrentSensorofRogowskiCoilCHENQiming1,YUYing2(1.WuhanUniversity,Wuhan430072,China;2.HubeiEHVTransmission&SubstationCompany,Wuhan430050,China)[Abstract]ThedesignprincipleofRogowskicoilisproposedthroughtheanalysisofhighcurrentmeasurementsensorandthecorrespondinglightningcurrentsensorcoilisdesigned.Thedesigncalculationaccuracywastestedbythemeasurementofcoils'factualoutputcharacteristics.[Keywords]lightningcurren;tRogowskicoi;lresistancesamplingmethod1,,,,,[1~2]:,,;,,,AkA;,0.1~100MHz,2000MHz,(ns);,,,;,,,[]20081018[](1978-),,,2,1M,LRLC0,R1:H(s)=U0(s)I1(s)=MsLC0s2+(LR+RLC0)s+(RLR+1)(1)2LRLRC0,2,1RL+RL1633320096湖北电力Vo.l33!3Jun.20092h1RC0,RRLC0,L,,,,RLC0L,32.6/50∀#ATP-EMTP:(200kA0.5%),1~100;1~20s10~500s,1/10s20/500s700Hz~1610Hz,3,ab,d,N,R3,,,1/6,1.2b=(1.2~1.3)aa,b,M=N0r22r0(2)L=N20r22r0=NM(3)RL=ls=2!rN!d2/4=8rNd2(4):C0=2!2Nr∀ln(b/#)(5)0∃∃∃(),4!%10-7H/m;r0∃∃∃;a,b,r∃∃∃;N∃∃∃;∃∃∃,1.75%10-8∃m;d∃∃∃;∀∃∃∃LN,RLNd,NdLRL+R,flRL+R2!L,%fR,LRL+R,R,R,,,,R,RL,11a/mmb/mmr/mmr0/mmd/mmN/L/mHM/HC0/nFRL/∃R/∃30036030330116004.382.7445.946.721fl=l2!=RL+R2!L280.66Hzfh=l2!=12!RC03464.41kHz,,,17Vo.l33!3Jun.2009湖北电力33320096,TVS,,,4,,2,42/kA7.7329.1389.2389.6416.8720.08/V4.45.25.285.529.611.6/AV-1175717571750174617571731:1600,,1750A/V,,1750-17311750=1917501.09%11750V/kA0.571V/kA4,1,2,,,,,45,,,,1/10s20/500s,3~150kA,0.571V/kA[][1],.Rogowski[J].,2005,31(8):67.[2]LiWeibo,MaoChengxiong,LuJiming.Studyofthevirtualinstrumentationappliedtomeasurepulsedheavycurrents[J].IEEETransactionsonInstrumentationandMeasurement,2005,54(1):284288.(15)GIS,GIS,,,2.3,GIS,2,2,,,1833320096湖北电力Vo.l33!3Jun.2009