工频电压下110kV级XLPE电缆绝缘中电树枝生长阶段特性

29320107AdvancedTechnologyofElectricalEngineeringandEnergyVol.29No.3July20102009-10-09508770571982-1945-/。110kVXLPE710049110kVXLPE。。XLPETM215.1TM247A1003-3076201003-0039-051。XLPE、1。XLPE。。、2-9。。110kVXLPE。XLPE。9kV、-11kV、13kV15kV。22.164/110kVXLPE5mm。-2～3mm1mm30°5±1μm1。XLPE。120～140℃120℃3511℃/min。XLPE。XLPE2kV。2.2240291Fig.1SampleandelectrodesT1T2RT2C1C210001Ck2000pFCxRC。IEC602702～3pC10pC。3。。2Fig.2Experimentalcircuit3Fig.3Real-timemicroscopeobservationsystem39kV、11kV、13kV15kV1050。110kVXLPE。9kVXLPE4a、4b-4cQmax5200min。5。、Qmax70pCQmax150pC。4b5、。Qmax200pCQmaxQmax230pC250pC。-4cQmax“”“”Qmax90pC120pCQmax20pC3110kVXLPE4149kVFig.4Electricaltreesof9kV59kVt-Lt-QmaxFig.5Electricaltreest-Landt-Qmaxcurvesat9kV。11kV、13kV15kV6Qmax7。QmaxQmax611kV、13kV15kVFig.6Electricaltreesof11kV13kVand15kV711kV、13kV15kVt-Lt-QmaxFig.7Electricaltreest-Landt-Qmaxcurvesat11kV13kVand15kV250pC270pCQmax。13kV15kV。13kVQmax240pCQmax。15kV13kV4229Qmax13kV。11kV。XLPEXLPE10。11L.A.DissadoRuna-way。4110kVXLPE19kVXLPE、-。Qmax-。211kVQmax。13kV15kV、。15kV13kV。References1LiuYingWangLeWangLeietal..XLPENecessityofreducingtheinsulationthicknessofHVXLPEcablesfromthedefectpointofviewJ.HighVoltageEng.200632729-32.2ChenGThamCH.ElectricaltreeingcharacteristicsinXLPEpowercableinsulationinfrequencyrangebetween20and500HzJ.IEEETrans.onDielectricsandE-lectricalInsulation2009161179-188.3ChampionJVDoddSJStevensGC.AnalysisandmodellingofelectricaltreegrowthinsyntheticresinsoverawiderangeofstressingvoltageJ.J.PhysDAppl.Phys19942751020-1030.4DensleyRJ.AninvestigationintothegrowthofelectricaltreesinXLPEcableinsulationJ.IEEETrans.Electri-calInsulation1979143148-158.5ZhengXiaoquanGChenAEDavies.XLPETypesofelec-tricaltreesandinfluencefactorsinXLPEcableinsula-tionJ.Adv.Tech.ofElec.Eng.＆Energy200322421-24.6XieAnshengLiSheng-taoZhengXiaoquanetal..XLPEInfluenceoffre-quencyofvoltageappliedonthepropagationcharacteris-ticsofelectricaltreesinXLPEcableinsulationJ.Adv.Tech.ofElec.Eng.＆Energy200625333-36.7ZhouYuanxiangXingXia-oliangNieQiongetal..Breakdownphenomenacausedbyelectricaltreedegradationinhighdensitypolyethyleneun-derhighfrequencyvoltageJ.HighVoltageEng.2007331214-18.8RenHaoWangJueYanPing.StudyonelectricaltreeinPMMAunderrepetitivenano-secondpulsesJ.Adv.Tech.ofElec.Eng.＆Energy200827432-35.9ZhengXiaoquanFengXiao-qianWangYitian.3110kVXLPE43CategoriesofelectricaltreeinpolymerinsulationJ.InsulatingMaterials200332525-28.10ZhengXiaoquanXieAnsh-engLiShengtao.XLPETheelectricaltreesthatdevelopedininnerandouterlayerofXLPEcableinsulationJ.ActaPhysicaSinica20075695494-5501.11DissadoLADoddSJChampionJVetal.Propaga-tionofelectricaltreestructuresinsolidpolymericinsula-tionJ.IEEETrans.onDielectricsandElectricalInsu-lation199743259-279.Propagationstagecharacteristicsofelectricaltreein110kVXLPEcableinsulationat50HzpowerfrequencyvoltageCHENXiang-rongXUYangXUJieSHIWenYANGWen-huLIUYingCAOXiao-longLIJin-feiStateKeyLaboratoryofPowerEquipmentandElec.InsulationXi’anJiaotongUniversityXi’an710049ChinaAbstractBasedonthecombinedexperimentalmethodsofreal-timemicroscopedigitalimagingtechnologyandpar-tialdischargecontinuousmeasurementthestructurepropertiesandpropagationcharacteristicsofelectricaltreein110kVXLPEcableinsulationwerestudiedatdifferent50Hzpowerfrequencyappliedvoltage.Combinedwithanumberofexperimentalresultsitwasfoundthatundertheeffectofdifferentappliedvoltagestheelectricaltreestructuresdisplayedthefeaturesofdiversitythepropagationprocessandpartialdischargeshowedapparentstagecharacteristicsandalsothereweredifferentpropagationmechanismsineachstage.Keywords50HzpowerfrequencyappliedvoltageXLPEpowercableinsulationelectricaltreestagecharacter-isticsstructureproperties櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆partialdischarge29cont.fromp.2912FKatiraeiMRIravani.PowermanagermentstrategiesforamicrogridwithmultipledistributedgenerationunitJ.IEEETrans.onPowerElectronics20062141821-1831.13WuYiyongSunXudongChaiJianyun.Voltagecontrolofpermanent-magnet/reluctancegeneratorJ.Adv.Tech.ofElec.Eng.＆Ener-gy200625463-66.VirtualsynchronousgeneratorbasedinverterinmicrogridSUJian-huiWANGChang-liangResearchCenterforPhotovoltaicSystemEngineeringMinistryofEducationHefeiUniversityofTechnologyHefei230009ChinaAbstractAnewinverterbasedonthemodelofsynchronousgeneratorwhichiscalledvirtualsynchronousgenera-torispresented.Theinverterhasthefuctionofcontrollingpowerandmodulatingfrequencyandvoltagewhichmeetstheneedofmicrogrid.Itcanmodulatetheoutputreasonablytomeetthestabilityrequirementsofthepowersystem.ThisschemehasbeenprovedwithMATLAB/Simulinkintheend.Keywordsmicrogridinvertervirtualsynchronousgenerator