±800kV换流变压器试验方法研究

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±800kV,,(110144):,。:;;:TM406:B:1001-8425(2010)08-0035-06ResearchonTestMethodof±800kVConverterTransformerWANGGuo-gang,ZHONGJun-tao,LIUFeng(TBEAShenyangTransformerGroupCo.,Ltd.,Shenyang110144,China)Abstract:Thetestmethodofconvertertransformerispresented.Theproblemsintestarediscussed.Keywords:Convertertransformer;Test;Method1,GB/T18494.2-2007,IEC61378-2:2001。,,,,,。,,。,,,。。22.1,。,,,。,,,。,150Hz。,180Hz,200Hz240Hz。,。50%,。,10%~50%。,20%In(fr/ft)In,fr,ft,In。,GB/T18494.2-2007:P1=I12R+PWE1+PSE1(1)PX=IX2R+(IXI1)2(fXf1)2PWE1+(IXI1)2(fXf1)0.8PSE1(2)(1)(2)GB/T18494.2-2007。:R=PCU×1000I12(3)u=U(LW)U(VW)(4)TRANSFORMER47820108Vol.47AugustNo.8201047IX(LW)=IX(VW)u(5)R———,ΩPCU———,kWI1———,Au———U(LW)———,kVU(VW)———,kVIX(LW)———,AIX(VW)———,A。,Excel。1;2,。12(1)~(5),676.593kW。,。,,1~50。,12。12,(6n±1),。,(6n±1),,0.02%;,0.3%。,,,(6n±1),。,1.0,,1.051.15。2.22.2.1,GB/T18494.2-2007GB1094.2-1996,。,,,,,1h,。,,,,。(1)。,3h;,,12h。(2)。,3h,,1h,。,,。,。(3),1.0,,1.051.15。2.2.2(1)。:△θ(t)=△θu(1-e-t/T0)[1](6)△θ(t)———t△θu———T0———,h,,T02.0h,2.5h。(6),,3。3,2.5h。3,,1。11Table1Ratedvoltageandcurrentofconvertertransformerwithtwo-winding/kV/A297.33599990.99032652Table2Dataofloadlossatratedtapposition/Hz/kW50P1=559.913200PX=1519.516/A1009.44201.70/kV48.48938.794/%16.1464.62PCU/kW436.226436.22636、、±800kV8。3355K,。33,8.5h,1K,11.5h,3h。,55K,,()55K。,55K,8.5h,34。3430K,,7.0h,,10.0h,3h。,(),2.5h,2h。,,3。,,,,。,,12h。。,,,。,。,0.5h~2.0h,;4.0h~8.0h,。,,8h。,12h,GB1094.2-1996,3h。80%,90%,,,,。(2)。,“”,:1.0→1.05→1.125(1.15)。“”,1.0。1.051.0,,1.05。1.0,1.05。,1.125(1.15),3(2.5h)Table3Relationbetweentopoiltemperatureriseandtime/h30K,/K0.0—0.5—12.00.12//%0.0018.1399.1855K,/K——0.221.09.8932.9718.131.545.1214.858.102.055.0712.156.632.563.219.955.433.069.888.154.443.575.346.673.644.079.815.462.984.583.474.472.445.086.473.662.005.588.923.001.636.090.932.451.346.592.572.011.107.093.921.640.907.595.021.350.738.095.921.100.608.596.660.900.499.097.270.740.409.597.760.610.3310.098.170.500.2710.598.500.410.2211.098.770.330.1811.598.990.270.150%10%20%30%40%50%60%70%80%90%100%/131211109876543210/h1Fig.1Curveoftopoiltemperaturerise37472h,,,。,,,,2h,。,:1.05→1.125(1.15)。2.32.3.1。100,20%,,。,,,。,,。2。,R、C,,。、。,,,,。2.3.2±800kV、,。,、,,。3。,,,,,。。,,、,。、,。,,。,,;,CgCxRtRCRCRCRCRCRCCg—;Rt—;RC—;Cx—2Fig.2LightningimpulsetestcircuitwithwaveadjustingdeviceRR+100kVRm1Rm2Rm1Rm2U-100kVCRCCRfRtRfRRRrrr7200pF7200pF3Fig.3Electronicdelaycircuit38、、±800kV84Fig.4Delaycircuitofcable。,,,。,,4。4,,。,,。2.4。,,。,,,。()、。,。ρ≈1×1013Ω·m,ρ≈1×1015Ω·m,,,()。,,,。,,()[2]。,,,,,。,,,。,。,,。、。,,。。。2.4.1,:90min/90min/45min。,,,。,、1h~2h。,。,10。,。,。104。,120min,1h,,。,120min,15min,3,30min1~3500pC、1000pC。,。,,。RR+100kVRm1Rm2Rm1Rm2U-100kVCRCCRfRtRfRRRrrr7200pF7200pFC1C23947,、2h。2.4.2。,。,,。,,48h、72h。,,,。,,,。,,,,11.1Un。,12h。,,,,。。,,。11h,,,。,,,。,。,75%。,,、。,11h,1h,12h,,。3(1),(6n±1),。(2),12h,GB1094.2-1996,3h,。(3)1.0、1.05、1.125(1.15),,,;,2h,。(4)-,。(5),。(6)2h。(7),,12h。:[1]GB1094.2—1996,2[S].[2],,,.±800kV[J].,2006,7(11):17-20.4Table4InsulatingresistanceandtanδofmodelinDCvoltagetest10.0031120.00252100.0034227.525.630.160s/MΩ3506432121055720.5100250.00256821.3153650.00314934.2198760.0033830.0033431.25540430.566320.00312515.677560.00291617.888750.00181:2010-01-06:(1966-),,,,;(1961-),,,,。40

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