大容量变压器内绕组短路强度研究

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,,,,,,(110025):,。:;;:TM401+.1:A:1001-8425200908-0039-04ResearchonShortCircuitStrengthofInnerWindingofLargeTransformerXINZhao蛳hui,ZHONGJun蛳tao,FUTie蛳jun,WANGShou蛳min,WANGJian,RENYu蛳min,SUNYong(TBEAShenyangTransformerGroupCo.,Ltd.,Shenyang110025,China)Abstract:Basedontransformershortcircuittest,theradialstrengthofinnerwindingoftrans-formerisanalyzedbyFEM.Keywords:Transformer;Shortcircuitstrength;Innerwinding1、。,。,。1972,,。,,。,。2,。,。、;,。,。,,,,。3,,,,。,、、。、。,。,,。。Budiansky-Roth,,。“”,46820098TRANSFORMERVol.46AugustNo.8200946,,。,,:q(t)=p1+β[p2+β(p3+……+βpn)]p1———p2、p3———23pn———β———(),,(),,(),,。,1。,q(θ,t),K。4,。120MVA-,()。4.120,20,,。,50%,;75%,。,。4.1.1()2()。()3。1.7×107N/m3,3,15%。4.1.2-4。,50%,75%。,0.25~0.5。4,0.4,,,,,0.4。q(θ,t)KKKKK1Fig.1Modelofmultispanwithelasticsupport2000150010005000102030405060708090/Gs2Fig.2Axialleakagefluxdistributionofinnerwinding1210864200246810123Fig.3Curveofmaximumradialforceandangleofinnerwinding40、、8。4.2,20,,40,,。,100%,。,,。,,。。4.2.1-5。5,0.9,,,,,0.9。4.2.2-6。6,1.1,,,,,1.1。4.2.37,30。7,,。。4.2.4:,。,,100%,0.9,。,1.1,100%,。5000.511.522.530.10.20.30.40.50.6/cm4—Fig.4Curveofforceanddisplacementofmiddlecoil5—Fig.5Curveofforceanddisplacementofmiddlecoil000.511.522.530.80.210.41.20.6/cm1.41.66—Fig.6Curveofforceanddisplacementofbottomcoil01.520.80.210.41.20.6/cm1.400.510102030405060700102030405060707Fig.7Deformationdiagramofexternalconductorofcoilofinnerwinding4146:、,,,。,,,。1,,K=0。,,。6,。6.1120MVA,,,。6.2,,0.4;,,。,0.9。。,,。1996SSP8-50000/110,,;,,。。6.3,,,,,。,1.5,3。,0.9,,,。:[1]HolmRD.Theshort-circuitradialresponseofcore-formtransformercoils[J].IEEEPAS-104,1985,(2).[2]MankinEA.Theshort-circuitstrengthoftransformers:testmethods,calculationonshort-circiutstrength[D].CIGRE,1968,(11,12).[3]SteelRB.Dynamicmeasurementsinpowertransform-ersundershort-curcuitconditions[C].CIGRE,1968,[4]McnuttWJ.Powertransformershort_circuitstrength-re-quirements.designanddemonstration[[J].IEEE,PAS-89,1970,8(11,12).:2009-06-23:(1971-),,,,;(1961-),,,、,。(38):[1].[M].:,1996.[2],.[M].:,2006.:2009-03-20:(1971-),,,,。!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!42

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