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-07SimulationAnalsisofTransientThermalEffectofGroundWire-sussionypenClampSystemWoundbyAluminiumArmourTapeWencheng,ZHONGMeishan,GUODeming,WANGYongheng,JIANGPengcheng,LIUGangZHENG(SchoolofElectricPowerEngineering,SouthChinaUniversitofTechnology,Guangzhou,Guangdong510641,China)yroundwire-slemofoverheatingintheAbstract:Thereisaseriousussionclampsstemwoundbyaluminiumarmourgprobpenyroundwire.rfrequencyshort-circuitcurrent,andlocaloverheatingwillcausedamagestothetapeundertheactionofgpoweroundwirelocatingatthesussionrstudiestransientthermaleffectofthelems,thisInviewoftheabovegpenpapeprobroundwire-sclamp.Firstlccordingtothestructuralcharacteristicsoftheussionclampsstemwoundbyaluminiumy,agpenyarmourtape,itusestheComsolsoftwaretobuildthecorresingthree-dimensionalelectromagneticthermalcouplingpondsimulationmodel,calculatesandanalesthecurrentdensitdistributionandtemperaturedistributionoftheroundwire-yzygussionclampsstemundertheactionofrfrequencyshort-circuitcurrentsoastodeterminethescificlocationofspenypowepetheheatingbottleneck.Thenitdiscussestheeffectsofdifferentbolttorquesonthetemperatureofheatingbottleneckintpooftheroundwire.Theresearchresultsshowthatwhentherfrequencyshort-circuitcurrentflowsthroughtheroundgpowegwire-sussionclampsstemwoundbyaluminiumarmourtape,thecurrentdensitoftheoutermostcontactintbetweenpenyyporoundwireandoverhangclamphullshehisttingshemosterious.Theemperatureisesmainlitandheatstriggheyiconcentratedinthebareroundlineareanearthecurrentterminal.Meanwhile,thedecreaseofbolttorquewillleadtothegincreaseofthetemperatureattheheatingbottleneckintoftheroundwire.pogKerds:overheadgluminiumarmourape;currentsitransientroundwire;sussionclamp;atdenywopeny;tthermalcharacteristic