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当前位置:首页 > 行业资料 > 国内外标准规范 > 浅析分接开关油中杂质的危害及其监控与预防
1。,,,、、、、、。、。,、,,。,,。,。,。,。,,,。,。。,,,,。,,,,。,,,。,。2。,。。,,,(200333):、、,。:;;;;:TM403.9:B:1001-8425(2009)09-0052-09BriefDiscussiononHazardofImpurityinOilofTap-ChangerandItsMonitoringandPreventionZHANGDe蛳ming(ShanghaiHuanmingPowerEquipmentCo.,Ltd.,Shanghai200333,China;)Abstract:Thehazardoftheimpuritiessuchaswaterinoil,particle,activesulfurandparaffintotap-changerisexpounded.Themeasurestomonitorandpreventimpurityinoilarepre-sented.Keywords:Tap-changer;Impurity;Hazard;Monitoring;Prevention46920099TRANSFORMERVol.46SeptemberNo.920099。2.1。(1)。、。,,,。,,。(2)。,,(),,。(3)。,,。。,,,,。,,。,,;,,,。2.2,,,。。,。,,。,。,,。,,,。、,。,。,,,。,、,、。,30mg蛐L,20mg蛐L,40mg蛐L。2.3()、。2.3.1(εr80,2.2),,。。,、,,,,,。,。1。<15mg蛐L,,>15mg蛐L,,。。,,,,,。,。,1Fig.1Curveofbreakdownvoltageandwatercontentinoil7060504030201000102030405060708090100(10-4)蛐%蛐kV53462Fig.2Curvesofbreakdownvoltageandtemperatureofoil604020-4004080120ab2.5mmUw蛐kV蛐℃(a)(b)/kV(2.5mm)9080706050403020100010203040(10-6)-20℃-50℃-80℃3Fig.3Growthofsurfacefilmofcopperandbrassbarsinoilunderdifferentsurfacetemperature300200100Sr蛐mm05075100125t蛐hθ0=180℃θ0=150℃θ0=120℃θ0=180℃θ0=150℃θ0=120℃IH2Oθ0I58H2O(2),;,,。50℃,。2,,,;,。,,,,。,,。,、。,,。,,。tanδ。、,,tanδ。tanδ,。,,。,,,,。。,。。,、,。,,、。2.3.2,,,。2004,。(),。,,,,。,。,,,,,“micrOcell”(3)。。,,5494Fig.4Curvesofloadduration,temperatureandcontactresistanceofcopperandcoppercontactinoil16012080400100℃90℃80℃60℃40℃Rc/μΩ101246810224681032468104246105t1蛐h500μΩ。,。,。,,,。,,;()、CuO,(80℃),,,(4)。,、,,(、)。,PH。,PH5.0~6.0。,CuO。,,CuO。。。10(1),35kV、40μL蛐L,2%,,。。2.3.3()(),30mg蛐L(5μm),,,。、,,。,。33.1。、、。、。(100mL5μm),。,,。,。,,。40,,,,,。,“”,5。、,“”,5a。“”,,“”,。,,,1Table1Dataofon-load-tap-changingtransformerofShanghaiUrbanPowerSupplyCompany蛐kV蛐mg·L-1蛐%T134.540.71.30~20.00.36~1.001997-08-21T23049.32.20~5.500.46~1.301997-08-25T23049.12.41~7.930.255~0.4811997-03-12T237.520.71.1~1.30.96~1.201997-11-03T23621.00.6~1.40.6~1.21998-11-10T135200.48~1.670.38~1.371998-11-0455465“”Fig.5Conductivebridgeofimpuritybetweenelectrodesundervoltage(a)、(b)、,,。,,。,,“”,5b。“”,“”(),“”,“”,———“”。,“”,;,。,,“”。,,、,,。。。,。,,。,,。,、、。、,,,。3.2“”。“”、,。,,,,,。“”,。。,X()。。,,,,,。,,,,。,,,。,,,。,,,。,。(DGA),(COS),。COS。33(1990)(12),,,。(SO2H2S),,,,。,。3.3,。,。,,。DB。(6)。,,,。,,,,,7。5698Fig.8Changelawofoilqualityintap-changer蛐L蛐μL·L-1蛐kV1.00.90.80.70.60.50.40.30.20.150403020105040302010Uk=2000VIx=500A()H2OU200004000060000800001000007CM、Fig.7Curvesofswitchingtime,torqueandtemperatureofCMtap-changer蛐N·m35030025020015010050D蛐ms-150-100-50-40-30-20-1001020蛐℃6Fig.6Curveoffreezingpointandparaffincontent-50-40-30-20-10蛐℃0.10.20.30.40.50.6蛐%44.1()。,,,,,,,,8。,,、。。()。()2000(4000)。。,,,;,,,、、。。,,。,。、,“”,,。,,,。,。,。,,,。,,;,。,。,,5746。,,。,。,。。30kV;40mg蛐L;≥60kV,≥40kV,≤30mg蛐L;≤35kV,>30kV,<40mg蛐L。,。>30℃,<40mg蛐L,20℃~30℃,≤30mg蛐L,≤10℃,≤20mg蛐L。。,、。,。,。(1)(),。(2)“”(5L)。(3)()5min~20min()。(4)。4.2(),,。,。,。,。DL蛐T596-1996《》(2)。5,(、),(、)。、、、5。5.1“”(1),,“”。(2)(9)、、(、)2蛐DBTable2CharacteristicrequirementsofDBtransformeroilbeforeandinoperation蛐蛐,tanδ蛐%(90℃),≤330kV1蛐4GB56547~12NAS1638500kV0.7蛐2(PH),≥5.4蛐4.2GB759890℃蛐Ω·m,≥≤330kV6×1010蛐3×109DL蛐T421蛐mgKOH·g-1,≤0.03蛐0.1GB264500kV6×1010蛐1×1010()蛐℃,≤140蛐135(10、25)130(45)GB26120℃蛐mN·m-1,≥35GB蛐T6541蛐mg·L-1,≤66kV~110kV20蛐35GB7600GB7601蛐%,≤330kV1蛐3DL蛐T423DL蛐T450220kV15蛐25500kV1蛐3330kV~500kV10蛐15(),≤—蛐0.02%GB蛐T511蛐kV,≥15kV30蛐25GB蛐T507蛐μL·L-1150GB725215kV~35kV35蛐305(500kV1)66kV~220kV40蛐35150330kV50蛐45蛐:30μL蛐L500kV60蛐50:①10μL蛐L,30000μL蛐L~40000μL蛐L,20μL蛐L~30μL蛐L;②,15蛐25mg蛐L15mg蛐L,25mg蛐L。5899Fig.9Moistureevaporationdutyoftwotypesofmaterialindrying0.050.040.030.020.01:<102Pa110℃蛐%·h-117.4218.9223.2541.255068.83100113.5150185.5209.5蛐h,。(3),。(4),,。(5)。(6),。5.2,。,,。。(1),,。(2)“”,、,50HRC~60HRC,,140℃1000HV,。(3)(、)()(Ag2%),(Ag2%)。(4),,。150HV~180HV,3。5.3,。(1)<30kV>40mg蛐L,,()。(2),。(3)、,。>40mg蛐L,,。,,。5.4。(1)。,,。(2),。(3),,。(4),,,,。5.5,,,,。,,。(1),。(2)。(3)蛐:DB-10,DB-25,DB-45。6,105946、,。,,。,。,,()。DL蛐T596-1996《》DL蛐T574-1995《》,,≥110kV,≥40kV、≤30μL蛐L。,()(、),。:[1].[C].:2008,2008:1-7.[2].[M].:,2008.[3].[J].,2002,39(S1):70-72.[4].[J].,1997,34(9):35-38.[5].[J].,2000,37(12):26-30.[6].[J].,1997,34(6):36-37.[7].[J].,1983,20(6):35-37.[8].[J].,2002,39(5):33-35.:2008-07-14:(1942-),,,,。(13)±800kV,。(1),,。(2)、,。(3),,。:[1],.[J].,1991,11(3):43-50.[2],,.[J].,1998,35(2):34-37.[3]VecchioRMD,FeghaliP.Thermalmodelofadiskcoilwithdirectedoilflow[C].1999IEEETransmissionandDistributionConference,1999,(2):914-919.[4]TangWH,WuQH,RichardsonZJ.Equivalentheatcircuitbasedpowertransformerthermalmodel[J].IEEProc.Elec.PowerAppl,2002,149(2):87-92.[5].-CFD[M].:,2004.[6]VersteegHK,MalalasekeraW.Anintroductiontocomputationalfluiddynamics:thefinitevolumemethod[C].NewYork:Wiley,1995.:2009-04-13:(1979-),,,,、;(1968-),,,、,。≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤60
本文标题:浅析分接开关油中杂质的危害及其监控与预防
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