研究实施中的500kV同塔双回紧凑型输电线路

500kV,(,,100031)[]500kV500kV,,,,[]500kV:TM726.1:C:1000-7229(2002)05-0006-03500kVCompactTypeDoubleCircuitTransmissionLineonOneTowerunderStudyandImplementationShuYinbiao,ZhaoChenghua(BranchofPowerNetworkConstruction,StatePowerCorporation,Beijing,100031)[Abstract]ZhenpingYixing500kVcompacttypedouble-circuittransmissionlineononetower,beingtheindustrialtesttiemintheSanxiaTransmissionandDistributionEngineering,isanimportanttechnicalitemoftheSatePowerCorporation.Itsquestionsforstudyincludethe500kVdoublecircuitcompacttypetower,livelineoperation,systemparametersandoperationproperties,electricmagneticenvironmentimpactandlightningprotectionproperties,etc..Thesequestionshavebeenbasicallycompleted.Theimplementationoftheitemwillbringasignificantimportanceinimprovingthesafetyandstabilityofthelines,increasingthenaturaltransmissionpowerofthelines,reducingtheengineeringcostandsavingthelinecorridor,etc..[Keywords]500kVcompacttypedouble-circuittransmissionline;technicalscheme;benefit,1500kV,1999111883km,2500kV,,,500kV,,2500kV,,,,1,,2002,200331,2:,,,,FACTS,,,500kV,76%,,24%:2002-03-15623520025ElectricPowerConstructionVol.23No.5May,2002©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.1500kV,,,,,(1246),;,,,:2000500kV2000km;1999400kV1250km(900km);BPA()80500kV1000km500kV,17m;34%,2500km500kV,1,1450MW,2,2000MW500kV,,:500kV,,,500kV,,500kV,,,,,2500kV,500kV,500kV,:(1),()6.7m,(GMD)6.7m(2)6LGJ-240/30,4LGJ-400/35(3)6,75500kV©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.750mm,,375mm(4)V,V,(5)V,4340mm,28155mm(6)3.5m,,,5.2m(7)8001200m,,1500kV:(1)500kV,,,(1),,,,(2)(3.2m),BPA2.24m,()2.6m,500kV2.0p.u.(400km,2.06p.u.),,2.2m,,500kV,500kV,()(1.2m),,,,500kV,,,3500kV,,,:3.110%500kV500kV,,41.1m,58m(1),,20.44t,28t;42.99t,56t,27%23%,,10%V6,1,10%3.2500kV(SIL)30%,500kV500kV,0.201/km,76%;17.7nF/km,128%;190.5,77%;30%,30%,3.31m,500kV()11m(1m10kV/m)500kV,,10m,1m9.5kV/m,4kV/m31m,1m,1m,3.417m,4(32)823©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.:(1)50%,:N=U50%/(1)N;U50%50%,kV;,mm(1),U50%N220kVN1315,U50%15%(2):I=U50%(1-k)[Rch-Lgt2.6-hd2.6](2)k=k1lnD12d12ln2hbrbk;k1;;Rch;Lgt;hd;d12;hb;rb;D12(2),2D12,D12(1-k)U50%15%U50%I:I=4U50%Z(3)Z(3),U50%I,SS1.2%L+1(L),(3)110,220kV:12,,12,,(:)(8),75.2m2,500kV24m,500kV,3.5,,500kV,11,500kV(),,,1,0.00182/(100kma),50km500kV,,1(1)/kA155(165)164(139)(2)/(100kma)-100.0324/(100kma)-10.001820.0192/(100kma)-10.049300.1064/(100kma)-10.008900.0040:(1)(2),0.0954/(100kma)10001,(RI)(AN),500kV4300mm24400mm2,(:)2323©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.