500kV变压器内部绝缘淋雨受潮后的干燥处理

500kVTheDesiccationTreatmentofMoisturizedInternalInsulationof500kV,(,430050)500kV,,AbstractThemethodofthedesiccationtreatment,itspracticeandeffectaresummarized.Itisinstructivefortheothersimilartreatment.500kVKeywords500kVtransformerinsulationonsitedesic2cationTM411+12A0[1],,267MVAö525kV,19963199910CU(C2H2)11210-6,,,,,:,,,,,,5min,,1,(1),,P=kS(t2-t1)10-3kW,S,150m2;t1,20;t2,100;k,5,12P=60kWl=19m,cosU017,U=220V,I=PöUcosU=390Aw=AUöl36,A=1179(2),,,(3)2(1),,;,(),;0300,;;,;3kWöm2,200mm,6,23kW,123;,12,12,Y0,214m;();5t,,,161314,370372380A(2)7420024284©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.400Pa,18h(5Töh)200mm,,,77h,,U(H2O)=310-655,:7G8,:2125G8,715G85d(3)1,5t(50mm),4250400Pa,19h,2,4000Pa80100,,,2öh,944850,,(1)7080,1001104100,106,103,88105,95,,,41130,70mL,954,,9510572h1341220000408öG8(+)(+)10761554185(++)2185118511651151145ö8086889094(4)68h,10h70kPa114kPa101,88,150mL;14h,0180kPa,12mL,44h,01350kPa,,,,1t80855h,92,,515h,,12h,,232%3mm115mm1030mm1196116011100190215365M8(+)(+)50001950650011310-6(8152715)10-6,7415kV,90tanD=0159%,,3311,,,24h,013kPa,(45töh,48h,72h31268%,37454G815s30s45s60s10min(+)(+)50(++)151016151810181530105ILöLA10kV20kV40kVCxöpFtanDö%(+)(+)115593220117(++)01511518240011990tanD=01034%,75kV,015%,U(H2O)=11510-6394kV,331pC,350pC6610-6U(B)H2COCO2CH4C2H6C2H4C2H2C1+C272h03121010110170017031266815012001242000203207,,7(58)84Apr.2002HIGHVOLTAGEENGINEERINGVol.28No.4©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.4411PTVTO,200%,:566,41250%,,,,19954110kV,6a,41315008öcm,,,,19966,414,,,199749,XWP2415,2148cmökV218cmökV511,,12km,,22ö(mgcm-2)0103010301060106011011012501250ÉÊËÌ131391620253114181620253121,,,,,31,,,41,,,51,,,,;,;,,;,,,,111,1993,(12):6(2002201220)1964,,1989,[phone](48)710-6H2COCO2CH4C2H6C2H4C2H2C1+C2200020320807168531001500152000203211091517751201601620002032170141518031411201921120002042060171214101110111200020620703716493131147011520002082180591813761811800011820002112010861513841321701903152001202228099181377102170217111:,1984(2002202201)1959,,,:(027)8487219121241967,,85Apr.2002HIGHVOLTAGEENGINEERINGVol.28No.4©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.