耦合地线在输电线路的应用

,(湖北省咸宁供电公司,湖北咸宁437100)[]根据输电线路架设耦合地线的防雷理论计算及雷击杆塔导地线的几何模型,通过具体的计算实例,提出了耦合地线在输电线路防雷中的应用效果[]输电线路;防雷;耦合地线;计算实例;应用效果[]TM726[]A[]1006-3986(2010)03-0032-03ApplicationoftheCouplingGroundWiretoTransmissionLineGAOZh-iyong,HETian(HubeiXianningElectricPowerSupplyCompany,XianningHubei437100,China)[Abstract]Accordingtothelightningprotectiontheoreticalcalculationoftransmissionlinewithcouplinggroundwire,thegeometricmodelofconductorandgroundwireandthecalculationofspecificexamples,thispaperpresentstheapplicationresultsofcouplinggroundwireinlightningprotectionoftransmissionline.[Keywords]transmissionline;lightningprotection;couplinggroundwire;calculationexamples;appl-icationresult(),,,11.11L1L2;Lb1Lb2;Rch:Ii=U50%(1-K)[B(Rch+Lgt/2.6)+hd/2.6](1):U50%)))50%;hd)));Lgt)))uH;[]2010-04-23[](1970-),,,B)))11;:B=1/{1+1L1+B.L2)/Lb1+B.(RchT/2)/Lb12(2)B.=1/11+L2/Lb2+(RchT/2)/Lb22:T,2.6LsK))),:K=K1K0K1)));K0)))()K0()#32#34320106湖北电力Vo.l34l3Jun.20102/0rs,,,,,/0rsIL,:Rs=9.4I2/3L(3)ILkA,rsm22:bK-M,(b)(),K-M;dH-OB-K;DK,DKKDKM;HKM;DKHdD,:obH1-OB,obdE-OB,EOBOB,E-OB-H1-d:,EOBH,,2:h,EOBH,,,,,,,,,,,,,,3220kVZ2-29.7:450m,U50%=1410kV;fd=12m,fb=8mfod=15m;27.4mm,9mm;11/8/%/%/kA/%70.290.87102150.8378200.816870.43480.82613027(150.777102316.7m)200.7310903270.41410.83512523(150.77798268.7m)200.749872870.49690.796915047(150.73112118516.7m)200.695141065670.47620.799814239(150.73312112448.7m)200.6971410047:27%~56%;,;15878;20%,,;#33#Vo.l34l3Jun.2010湖北电力34320106,;;44.1DL/T620-1997S=0.012L+1;,,DL/T620-1997,DL/T620-1997,,,,,,DL/T620-1997;,,,4.2,,,4.319962001220kV220kV21km,2004120,5000,,10,,220kV19962,1996,1220,8,75,,,(31),;,,,:,,;,,3(1),,,,,,,,:(2),,TV,TV(6kV),TV;,,,,TV:,(3),:;10kV,;;,0.01,;;,(4):#34#34320106湖北电力Vo.l34l3Jun.2010