线路绝缘子串机械振动疲劳性能的试验研究

1,2,3(1.,523129;2.,430074;3.,450016):,,D230022KD23,1,,,(15%),3000,14%,,,,,,24mm,,:;;;;;:TM216.4:A:100326520(2009)1022591206TestStudyofMechanicalVibrationCharacteristicsofEHVTransmissionLineInsulatorsStringGAOMing2zhen1,ZHANGRui2,ZHANGZhi2wei3(1.DongguanPowerBureauofGuangdongPowerGridCorporation,Dongguan523129,China;2.StateGridElectricPowerResearchInstitute,Wuhan430074,China;3.ZhengzhouXiangheGroupElectricEquipmentManufacturingCompanyLtd,Zhengzhou450016,China)Abstract:InordertoresearchthemechanicalvibrationfatiguepropertiesofEHVoverheadtransmissionlineinsula2torstring,wireandfittings,inthelightofdomesticandinternationalexistenttestmethods,weadoptedD230022typevibrationtableandKD23sinusoidalvibrationcontrolinstrument,anddevelopedasetoftestrequirementtomeettherequirementsofinsulatorstringvibrationtestsystems,toresearchporcelainandglasssuspensioninsulatorstringandcompositeinsulatorsbyalotofmechanicalvibrationtest.Theresultsshowthatthesuspensionstringstesthasnoeffectoninsulatorstrength,buttensionstringstesthasagreaterimpact;tensionstringstrengthofporcelaininsulatorsislessthannormallevels(about15%),andglassinsulatorstringsstrengthchangessmaller.After30milliontimesvibrationtestforcompositeinsulatorswithpresstechnology,themechanicalstrengthoftheinsulatordecreasestosomedegree,themaximumdeclinerangeis14%.Differenttestmethodsforinsulatorstringvibrationfatigueandtestparametersareproposed,andthereasonablenessofthecriteriaisdiscussedtoeffectivelye2valuateitsvibrationfatigueproperties.Itisadvisedthatthedesignandselectionofcompositeinsulatorsstrengthshouldfocusonvibration2resistant.Forthelineinvibration2proneareas,itissuggestedthatthecorediameterof24mmandabovewithanti2acidfunctionshouldbeadopted,andastrengthgradeshouldbelifted,evenmulti2string2paralleloperationmodeshouldbeadopted.Keywords:transmissionline;insulatorsstring;vibrationcharacteristics;fatigue;vibrationtestmethod;machaincalstrength0,:()(),[123],,,,,,3150Hz[4],(3050)%[5][629],01510m/s,,,362Hz,5m/s31Hz1952351020091031HighVoltageEngineeringVol.35No.10Oct.31,2009,,,(),,,,2002,,400765kV,,,1(),,,,,;,,,,,,,,,,;,,,,,,,,,,,(1Fig.1Testcollocationforsuspensionstring)2,2002,,,2.1,,,:1),,6kN,30m39kN2),;4,30m39kN3),1,f10Hz,107,(1000/f1.8)mm(fHz)2.2,122.3LGJ2720,239717kg/km,4280kg,30,1400N,3000ND230022KD23,2952Oct.2009HighVoltageEngineeringVol.35No.101Tab.1Testresulatsforporcelainandglassinsulatorsstring//kN/kN/kN1XZP221044110012000212248229.87.82XZP2210241V10002570248291275.96.63XZP2210441V10017510257293278.26.94XP22210235V10075000256287275.06.65XP22210435V10036580255281269.56.36XP2221043510028650245271262.66.47LXY2120240I10028640151162157.23.18LXY221043510030589249300278.313.0:16A,78B12;22;32;42;52;62;72(IV);82;92;102;112;1222Fig.2TestcollocationfortensionstringADSSOPGW,2.4,,DX2H212.4.1,,1090Hz,200m/s2,A/D,2.4.2Win98/Win2000,2007,3IFig.3DoubleIstring,,,,3,,,36143.1,,,;,60%(),40%,39522009103510()()1()2,(V),6kN,,,;(15%),,,,,,,3.2,,,;34,,,,,,14%,;5%;120kN160kN1000,300kN400kN3000(12%),,,,,,[10,11],,,4Fig.4Doubletensionstring5VFig.5DoubleVstring64Fig.6Quadrupletensionstring2Tab.2TypetestresulatskN1XZP2210273.54.92XP22210265.64.03LXY2120161.84.64LXY2210274.915.84952Oct.2009HighVoltageEngineeringVol.35No.103Tab.3Testresulatsforcompositeinsulators//kN1234567891011FXBW2400/120FXBW2400/160FXBW2500/300FXBW21000/300FXBW21000/400CDEFGHIIII10523275104238501026413010368250300001633000842030002840300384003000128030002560260.2265.5()267.9()298.9()303.1()289.7306.0()392.1394.4()436.2()436.9()459.2()464.8()474.4486.8()378.4386.5()364.0385.1()486.1495.2()4Tab.4Typetestresulats/kN1FXBW2400/120260.42FXBW2400/160C287.33FXBW2500/300425.94D468.25FXBW2500/300E482.26F448.678FXBW21000/300FXBW21000/400GH435.1552.5,,,44.1(),2.12080,,,,,,,,[12],(),,()();,,,DL/T864220041000V100030004.2,,,,;,,,DL/T86422004:;,2040Hz,3000595220091035104.3,3,,,;,,,,,,,,,,[13],,,,,,24mm,,,,,,,5a),1b),,(15%),3000,14%,c)(),d),24mm,,[1],.[M].:,2002.[2].[J].,1997,18(9):38240.ZHANGHui2tao.Examplesofaeolianvibrationharmfulnessonoverheadtransmissionlinesandimportanceofitsfieldmeasure2ment[J].ElectricPowerConstruction,1997,18(9):38240.[3],,,.[J].,2004,37(10):31233.CHENJian,HUANGZhi2jie,LILu2ping,etal.Frettingdam2agecharacteristicsofoverheadelectricalconductors[J].ElectricPower,2004,37(10):31233.[4].[M].:,1991.[5].[M].:,1984.[6][]H.[M].:,1983.[7],.[M].:,2007.[8].[M].:,1987.[9].[M].:,2002.[10],,,.[J].,2004,5(4):63268.WUGuang2ya,CAIWei,ZHANGRui.Operatingcharacter2isticsandreliabilityanalysisoncompositeinsulators[J].Elec2tricalEquipment,2004,5(4):63268.[11].500kV[R].:,2007:83287.[12],,,.[J].,2008,28(4):1232128.WANGHong,LIUYi2bing,etal.Thestudyofconductorfa2tiguetestamplitudeofoverheadlines[J].ProceedingsoftheCSEE,2008,28(4):1232128.[13],,,.[M].:,2008.1973,,:(0769)228293291975,,:[phone]E2mail:[e-mail]200920120720092032176952Oct.2009HighVoltageEngineeringVol.35No.10