用电磁场和流场模型计算GIS母线损耗发热

GIS范镇南1,2,张德威2,陈显坡2,赵斌1,2,杨皓麟3(1.重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆400044;2.国网四川电力职业技术学院(四川省电力公司培训中心),成都610072;3.国网成都电业局,成都610100):GIS,,,GIS,:GIS,GIS,,,S,GIS,S,,:;;GIS;;;:TM154;TM501;TM642:A:1003-6520(2009)12-3016-06CalculationofLossandHeatofGISBusBarUsingElectromagneticFieldandFluidFieldFANZhen-nan1,2,ZHANGDe-wei2,CHENXian-po2,ZHAOBin1,2,YANGHao-lin3(1.StateKeyLaboratoryofPowerTransmissionEquipment&SystemSafetyandNewTechnology,ChongqingUniversity,Chongqing400044,China;2.SichuanElectricVocationalandTechnicalCollege(ElectricPowerTrainingCenterofSichuan),Chengdu610072,China;3.ChengduElectricPowerBureau,Chengdu610100,China)Abstract:ToresearchthelossandheatproblemofGISbusbarthoroughly,theelectromagneticfieldandfluidfieldmodeloftheGISbusareestablishedbythefiniteelementmethod,consideringthefactorssuchasskineffect,eddyloss,temperatureeffectofconductivity,gasflow,gravity.Furthermore,theheatsourceandtemperaturedistribu-tionoftheGISbusarecalculatedandanalyzed,andthedataarecomparedwithtestedones.TheresultsshowthatthecurrentandlossdensitydistributionofGISbusaccordwithskineffect,thetoptemperatureoftheconductorandthetankinthehorizontalGISbusishigherthanthebottom.Forthehorizontalsingle-phaseGISbusbar,thetem-peraturedistributionissymmetricaltotheverticalcenteraxis,thegasconvectionisfairlystrongbetweenthecon-ductorandtank.Intheannulus,theshapeofisothermalslikesS,thetemperaturedistributionisnonuniformatthesamecircumferenceofacircle.Forthehorizontalthree-phaseGISbusbar,theisothermalsbentlikesSshapeneartheupsideconductors,yetcomparedwithupside,theisothermalsaroundtheundersideconductorbecomemoresmooth.Keywords:electromagneticfield;fluidfield;GISbusbar;losses;heat;finiteelementmethod0,GIS,,,,,,,,GIS,,,[1-4],,[5],30163412200812HighVoltageEngineeringVol.35No.12Dec.2009,,[6,7]GIS,[8]SF6,,,,,,,Nusselt[6,7],[8],,,[9],[10],,800kVGIS-,,GIS,,,,GIS,,1,GIS121,,,SF61.1[11-13](A)=J(1),A;J;,z,Ax=Ay=0,Jx=Jy=0,(1):x(Azx)+y(Azy)=-Jz;(2)Jz=Jsz+Jcz;(3)Jcz=-Azt(4),Jsz;Jcz;1Fig.1CrosssectionofGISbusbar1GISTab.1Basicdataofthesingle-phaseGISbusbar/mm605/mm85/mm570/A4000/mm120/C11.32GISTab.2Basicdataofthethree-phaseGISbusbar/mm920A/A4000/mm900B/A4190/mm120C/A4000/mm92/C13,x(Azx)+y(Azy)=-Jsz+jAz(5)A=0,A=0,GIS1.2,IePe:Ie=eJzedxdy;(6)Pe=I2eLefe(7),Jze;e;Lef,Pc=ke=1Pe(8),k,301720091236121.3GIS,2,x(tx)+y(ty)=-qV(9),;t;qV[14,15]:(u)x+(v)y=0;(10)(uux+vuy)=-px+x(ux)+y(uy);(11)(uvx+vvy)=-py+x(vx)+y(vy)+gt;(12)cutqx+cvtqy=x(tqx)+y(tqy)+qV(13),;p;;uvxy;g;;t;tq;c,,-1tn=in(tcondS-ttankS)+inb(t4condS-t4tankS);(14),-2tn=out(ttankS-tf)+outb(t4tankS-t4f)(15),n;12;inout,;inout,;tcondSttankStf;bStefan-Boltzmann,,,,GIS3GISTab.3Lossesandtemperaturesofsingle-phaseGISbar/(Wm-1)120.538.9tmax/C43.120.7tm/C42.620.34GISTab.4Lossesandtemperaturesofthree-phaseGISbarABC/(Wm-1)103.6110.9101.876tmax/C52.553.948.328tm/C52.753.348.630,11.3C,GIS,13C1.4,,,1t1,;,t2;t2,,t1t222.123,,,GISGIS,,,;,,,2.2GIS45343445,GIS,,,,3018Dec.2009HighVoltageEngineeringVol.35No.122GISFig.2Distributionofcurrentdensityandlossdensityofsingle-phaseGISbusbar3GISFig.3Distributionofcurrentdensityandlossdensityofthree-phaseGISbusbar301920091236124GISFig.4Distributionofthetemperatureandthevelocityvectorofsingle-phaseGISbar,,4,GIS,,,,,,S,,,(reverseofisothermal),,,,GIS,,ABC534,,,BAC,,BAB,S5GISFig.5Distributionofthetemperatureandthevelocityvectorofthree-phaseGISbar5GISTab.5Verificationoftheresultsofsingle-phaseGISbartmax/C43.120.7tm/C42.620.3/%1.226GISTab.6Verificationoftheresultsofthree-phaseGISbarABCtmax/C52.553.948.328tm/C52.753.348.630/%-0.41.1-0.6-6.7,;C,,,,,52.3,56,3020Dec.2009HighVoltageEngineeringVol.35No.12,,GIS12,GIS11.3C,GIS13C,,,,,,,,GIS,,GIS3a)GIS,,,b),GIS,c)GIS,,,,S,d)GIS,S,,e)--,,,GIS,,[1].GIS(I)[J].,1993(3):2-6.[2].GIS(II)[J].,1994(1):10-15.[3].GIS(III)[J].,1994(3):7-14.[4]RobertTConeybeer,BlackWZ,BushRA.Steady-stateandtransientampacityofbusbar[J].IEEETransonPowerDeliv-ery,1994,9(4):1822-1829.[5]KoshiItaka,TomooAraki,TakushiHara.Heattransferchar-acteristicsofspacercables[J].IEEETransonPowerAppara-tus,1978,97(5):1579-1585.[6]KimSW,KimHH,HahnSC.Coupledfiniteelement-analyt-ictechniqueforpredictionoftemperatureriseinpowerappara-tus[J].IEEETransonMagn,2002,38(2):921-924.[7]JoongKyoungKim,SungChinHahn,KyongYopPark,etal.TemperaturerisepredicionofEHVGISbusbarbycoupledmagnetothermalfiniteelementmethod[J].IEEETransonMagn,2005,41(5):1636-1639.[8]LabridisD,HatziathanassiouV.Finiteelementcomputationoffield,forceandinductanceinundergroundSF6insulatedcablesusingacoupledmagneto-thermalformulation[J].IEEETransonPowerDelivery,1994,30(4):1407-1415.[9],.[J].,2002,23(2):43-48.JIANGJian-hua,ZHENGHua-yi.Numericalsimulationofcon-tinuousinductionheattreatmentofthickwalltubesbyfiniteele-mentmethod[J].TransactionsofMetalHeatTreatment,2002,23(2):43-48.[10],,,.800kVGIS-[J].,2008,34(7):1383-1388.SONGFan,SHENChun-hong,LINXin,etal.Calculationandanalysisonmagneto-thermalfieldsof800kVGISdiscon-nector[J].HighVoltageEngineering,2008,34(7):1383-1388.[11].[M]..:,1986.[12].[M].:,1991.[13],,,.[M].2.:,2008.[14].[M].2.:,2001.[15],,,.[M].:,2005.[16].[