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500kV,(300022):500kV,。:;;:TM406:B:1001-8425(2009)06-0040-04TestandAnalysisofGraininessin500kVTransformerOilLIXing,ZHANGGui-xian(TianjinElectricPowerScience&ResearchInstitute,Tianjin300022,China)Abstract:Themonitoringanalysisandsimulatedtestofgraininessin500kVtransformeroilareintroduced.Theinfluenceofgraininesstobreakdownvoltageisanalyzed.Keywords:Transformer;Insulationoil;Graininess1,、,。,,,,,,。,,。2,,、。。(1)。、、。,,、,,。(2)。,;;、、。(3)。,、、、。3、500kV。,,,,,,。5μm~15μm、15μm~25μm、25μm~50μm、50μm~100μm100μm。。2006500kV,1。GB14542/T-2005《》,500kV46620096TRANSFORMERVol.46JuneNo.62009、500kV6。1,NAS16384。100mL(5μm)3000,。,500kV2。,3。2,20NAS7。1991,500kV,100mL5μm20000,100mL50μm200,NAS6。7100mL5μm20000,4100mL50μm200,35%20%。A412,B59,;5,,B4A100mL20000。,。,,1Table1Physicochemicalandelectricpropertiesofpureinsulatingoil(PH)/℃/mgKOH·g-1(25℃)/mN·m-1/℃(20℃)/kg·m-3/mm2·s-15.61480.00853-258789.75/mg·L-1/%/mgKOH·g-10.010.0550.001NAS1638/kV(90℃)/%(90℃)/%714.46×101342500kVTable2Distributionofparticleininsulatingoilof500kVmaintransformerinoperation、/kV/μmNAS16385-1515-2525-5050-100>100A3A20036610.93660400702004A3B2003626.496307804201006A3C2003668.67570720140005A4A19956410.75459034103602008A4B19955232.214843098804220770011A4C1995627.917689098003530110011B3A2006685.859906001301005B3B2006685.0980010802301006B3C2006663.87420640260006B4A2005645.72021023706204007B4B2005683.959705701901005B4C2005664.767505401603005B5A1998689.8105550128803620290109B5B1998624.615915012610110805104012B5C1998646.61800701949057205403010C2B2002685.566806901301005C2C2002664.71247013102301006C3A2005624.671305701501005C3B2005663.899301100250006C3C2005624.4581079018010054146,。6NAS6。1100mL5μm20000,16%。100mL5μm20000。23,NAS,8,,。,。4,。,、。、,,。4.1100mL5μm200007100mL50μm2004,A4A、B、C,B4A,B5A、B、C、。,,。NAS7,。NAS6,NAS6,,1000012000,。1。4.2NAS6,,12000,,。,,,。NAS6,3500kVTable3Distributionofparticleininsulatingoilof500kVmaintransformerininstallation、/kV/μmNAS16385~1515~2525~5050~100>100D2B20076410.11885086080007D2B20076610.52152066090007D2C20076410.21344016203201006D3A20076010.6118701560210006D3B20076610.9171301430180007D3C2007649.03100370701004(a)(b)(c)(d)(e)(f)1Fig.1Typicalresultsofironspectramofoilundermicroscope42、500kV6,,。5,。,60μm,,,,。4。:(1),,。,。(2),,;,。(3),,。6、,,。。,,,,。GB14542/T-2005《》,500kV,。,,,。,,,。、,。,,5μm20000、50μm200,。,,,。,,,。:[1]GB14542/T-2005,[S].[2].[J].,2004,21(4):31-32.[3].[M].:,1993.4Table4Influenceofmetalparticletobreakdownvoltage5μm/kV5μm/kV7350~785066~6825.4723540~2542064~6824.3012560~1324064~6626.4833700~4190060~6422.9757950~6025054~5826.2045520~5344060~6424.51106350~11677050~5227.5867520~8148056~6224.33135820~13698048~5227.15114760~11660054~5822.29:2008-05-28:(1959-),,,,。!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!,9.9,。,。9.9,、,,,。43
本文标题:500kV变压器油颗粒度的试验分析
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