110kV交联电缆绝缘层热分析研究

20054No.42005ElectricWire&Cable20058Aug.,2005110kV1,2(1.(),450006;2.,710049):,110kV,,;HmHm:;;;:TM247.1;TM201.42:A:167226901(2005)0420026204ThermalAnalysisof110kVXLPECableInsulationZHUAi2rong,etal(ZhengzhouCable(Group),Co.,Ltd.,Zhengzhou450006,China)Abstract:ThecrystallinemorphologyofXLPEinsulationon110kVpowercableswasinvestigatedusingdifferentialscanningcalorimeter(DSC).Theresultsshowthattheheatingprocessandthermalhistorymaycausedifferentcrystallinemorphologydistributionindifferentlayersoftheinsulation.Thecrystallineintheinnerandouterlayerislowerthanthatintheintermediatedlayer.ThemeltingenthalpyHmofmaterialsreflectssensitivelythedifferenceincrystallinemorphology.ItismorereasonabletousethevariationinHmbeforeandaftertheprocesstoestimatetheeffectofthestressreliefintheinnerlayerthantousethevariationingeneralmechanicalandphysicalproperties.Keywords:XLPEinsultedcable;insulation;crystallinemorphology;thermalanalysis:2004210225:(1964-),,,,.:79[450006].1,,(350C)(1MPa),,,,CC,,,,;,[17],,,,,110kV,,,,22.1NOKIA110kV,95120C,350C1MPa,©1994-2006ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(DSC)[814]N2Perkin2ElmerDSC22C10CPmin150C,,5min,;10CPmin,,5min;10CPmin150C,33.11110kV,11DSC1110kVTmPCTmPCHmP(JPg)TcPCHcP(JPg)TcPCDPC106.716.463.9390.3-57.616.48.9105.813.084.2393.1-56.412.75.8106.513.666.8293.0-53.413.56.31Tm();Tm();Hm();Tc();Hc();Tc(=Tm-Tc);D1,,,;,;,,,,;;;,20JPg,,(110kV17mm),,,125C,300C1MPa,,,,,,,,,,,,,,,,,,,,,,,,,,2130C2hDSC,22DSC7220054No.42005ElectricWire&Cable20058Aug.,2005©1994-2006ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(JPg)TcPCHcP(JPg)TcPCDPC105.615.971.493.1-61.9912.56.7106.820.480.391.8-64.5215.08.9108.015.077.892.3-59.9715.78.62,,,,,;,,Hm,,,,,,,,3.25min,,,,10CPmin,DSC,(Tc),Hc,TcDDSC3,13,DSC,,,,,Tc,,,,,,-70C,110C,90C,,,,,,,,;,,,,,,,,,,,,,,,3DSC130CDSC4,24,DSC,,,,,,,,,,,4DSC3.3DSC(34)t0,tx,x-t,5x=50%t,,t,t1P2,38220054No.42005ElectricWire&Cable20058Aug.,2005©1994-2006ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.)b)53t1P2Pmin1.691.271.081.161.231.30,t1P2,,;,,t1P2,4,DSC,:,,;Hm,Hm,,,,,:[1]GongH,ChooiKMandOngCK.Chargingofdeformedsemicrystallinepolymersobservedwithascanningelectronmicroscope[J].IEEETransactionsonDielectricsandElectricalInsulation,1995,2(6):1123.[2]NathRandPerlmanMM.Effectofcrystallinityonchargestorgeinpolypropyleneandpolyethylene[J],IEEETransactionsonElectricalInsulation,1989,24(3):409.[3]CapaccioG,GolzWandRoseLJ.Theinfluenceofmorphologyandpolymerstructureonthewatertreeingresistancsofcrosslinkedpolyethylene[C].ElektrotechnischeGesellschaftFachberichte16,VDE2VerlagGmbH,Berlin,1985:4572460.[4]BrowcrDV,NaylorKLandPhillipsPJ.Multiplcmorphologicsincross2linkedpolyethylene[C].1980AnnualReportConferenceonElectricalInsulationandDielectricPhenomena,1980:4572460.[5]WagnerH.Pseudo2spherulitestructureincrosslinkedlowdensitypolyethylene[J].IEEETrans.Elec.Insulation,1978,13:4572460.[6]OlleyRH,HodgeAMandBassettDC.Apermanganicelchantforpolyolefins[J].JournalofPolymerScience,PolymerPhysicsEducation,1973,17:4572460.[7]BarnesSR.Morphologyofcross2linkedpolyethlene[J].Polymer,1980,21:4572460.[8].[D].,1986.[9]HatakeyamaT,QuinnFX.ThermalAnalysis2FundamentalsandApplicationtoPolymerScience[M].1994.[10]Saitoy.FundamentalsofThermalAnalysisforMaterialsScience[M].Kyoritsu:1990.[11].[M].:,1990.[12].[M].:,1990.[13]LeslieJG.Investigationofpolymericmaterialsusingtheconecalorimeter[J].Polym.Eng.Sci.1993,33(8):4572460.[14].[M].:,1993.,,9220054No.42005ElectricWire&Cable20058Aug.,2005©1994-2006ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.