您好,欢迎访问三七文档
当前位置:首页 > 行业资料 > 国内外标准规范 > 三绕组自耦变压器三侧同时满容量运行时公共绕组电流的计算
1,2,1,2,2(1.110023;2.110025):,,。:;;;:TM401+.1:B:1001-8425(2009)02-0001-03CalculationforCommonWindingCurrentduringFullPowerOperationofThreeSidesattheSameTimeinAuto-TransformerwithThreeWindingsZHENGGuo蛳pei1,2,XIEDe蛳xin1,FANGMing2,ANZhen2(1.ShenyangUniversityofTechnology,Shenyang110023,China;2.TBEAShenyangTransformerGroupCo.,Ltd.,Shenyang110025,China)Abstract:Accordingtoanalysisofauto-transformer,theformulatocalculatecommonwindingpowerduringoperationofauto-transformerwiththreewindingsispresented.Basedonexample,thecommonwindingcurrentduringfullpoweroperationofthreesidesatthesametimeiscalculated.Keywords:Auto-transformer;Commonwinding;Fullpower;Current1,、,,。、,、、,、。,。,,。,。,,ODFPS-250000/500,。2、,。1。1,AXA′XAA′。A′X、,,AA′,。AXN1,A′XN2,E1E2,:E1E2=N1N2(1),、46220092TRANSFORMERVol.46FebruaryNo.2200946,:U1U2≈E1E2=N1N2(2),。,:I1U1=I2U2(3)(2)(3):I1N1=I2N2(4)(4)I1N2,:I1(N1-N2)=(I2-I1)N2(5)I1(N1-N2)———(I2-I1)N2———(5),。、,,。,,。(5),:I1(U1-U2)=(I2-I1)U2(6)(6),。。。,,:I1U1=I2U2(7),,:α=I1(U1-U2)I1U1=U1-U2U1(8)32。,I1I2。,。,0,:S1+S2+S3=0(9):I1U1+I2U2+I3U3=0(10),:I1(N1-N2)+IgN2+I3N3=0(11),:I1(U1-U2)+IgU2+I3U3=0(12)(8):U1-U2=αU1(13)(13)(12):I1αU1+IgU2+I3U3=0(14)(10)(14),3。:(I2U2)2=(I1U1)2+(I3U3)2-2I1U1I3U3cosθ(15)(IgU2)2=(I1αU1)2+(I3U3)2-2I1αU1I3U3cosθ(16)(15)(16),,:Sg=(1-α)(S23-αS21)+αS22姨(17)U1E1N1I1I2E2N2U2XXA′UCECN1-N2A1Fig.1Cannectiondragramofsingle-phaseauto-transformer2Fig.2Connectiondiagramofsingle-phaseauto-transformerwiththreewindingsU1E1N1I1I2E2N2U2XXA′UCECN1-N2AI3E3N3U3Igax2、、2ODFPS-250000/500,、、。ODFPS-250000/500::250MVA/250MVA/80MVA:(5003姨)/(2203姨±2×2.5%)/66kV:866.0A/1968.2A/1212.1A-:Ig=1968.2-866.0=1102.2A,(8):α=(5003姨-2203姨)/5003姨=0.56(17)、、:Sg=(1-0.56)×(802-0.56×2502)+0.56×2502姨=149.7MVA、、:Ig=149.7×103/2203姨=1178.6A-6.48%。、、1。4(1),(17),:Sg=(1-α)(S23-αS21)+αS22姨,,。(2)1,ODFPS-250000/500-5.76%~7.86%。,。:[1],,.[M].:,1987.[2].[M].:,1996.[3]GB/T13499-2002,[S].I1U1I2U2I1αU1IgU2I3U3θ3Fig.3Powervectorgramofterminalsandwindings1、、Table1CurrentsintapsofcommonwindingduringfullpoweroperationofHV,MVandLVsidesatthesametime/V/MVA/A-/%11333700.538145.11087.87.8621301950.549147.41132.16.893()1270200.56149.71178.66.4841238450.571152.11228.16.1551206700.582154.41279.55.76:2008-07-09:(1969-),,,,;(1943-),,,,;(1971-),,,,;(1971-),,,,。姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨,2。195,180250。,5,3
本文标题:三绕组自耦变压器三侧同时满容量运行时公共绕组电流的计算
链接地址:https://www.777doc.com/doc-9205889 .html