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(ABB400052):,。:;;:TM401+.1:B:1001-8425(2009)11-0010-05ImpedanceCalculationofSingle-PhaseLinearRegulationAuto-TransformerwithBy-PassLimbWUQiu蛳ping(ABBChongqingTransformerCo.,Ltd.,Chongqing400052,China)Abstract:Theformulasforimpedancecalculationofsingle-phaselinearregulationauto-transformerwithby-passlimbarederived.Thecalculationexampleofatransformerispre-sented.Keywords:Auto-transformer;Impedance;Calculation1,、、。,,,,,。,,,。,。。,。2Garin(A.N.)Paluev(K.K.),。,;。n,Zjkjk,,:P+jQ=-12nk=1Σnj=1ΣZ軈jkI軃jI軃*k(1),I軃*kI軃k。,,:Q=Im-12nk=1Σnj=1ΣZ軈jkI軃jI軃*kΣΣ=-12nk=1Σnj=1ΣXjkIjIk(2)(2)Xjk,Q,:Xeff=-12nk=1Σnj=1ΣXjkIjIk(3)Xeff———,%Xjk———jk(j≠k),%4611200911TRANSFORMERVol.46NovemberNo.112009113500kV,,,。,500kV、、。--,。。,,。1,。,,:,;,。3.1—3.1.1—2-。2,:I5=I2+I4I1N1+I2N2=0I4N4+I5N5=!########$0(4)1,:N5′=N2N4N5(5):Ne=N1+1+N5N4%&N2(6)I1Ne,(I1Ne)*=1,(4):(I1N1)*=N1Ne(I2N2)*=-N1Ne(I4N4)*=N1N5Ne(Ne-N1)(I5N5)*=-N1N5Ne(Ne-N1)!######################$(7)(3),—:XHM+=A2X12+B2X45(8),A=N1NeB=N1N5Ne(Ne-N1)!##########$(9)X12、X45—、—(%),:Xjk=1.24fINRj3+Rjk+Rk3%&Dj+DkHwet×106ρjk(10)f———,HzRj———j,mmRk———k,mmRjk———jk,mmDj———j,mmDk———k,mmHw———,mmMVLVHV123451—;2—;3—;4—;5—。1Fig.1Diagramoflinearregulationauto-transformerwithby-passlimb~12452-Fig.2HV-MVshortcircuitdiagramatmaximumtap1146IN———jket———,/ρjk———Rogowski,ρjk=1-Rj+Rjk+RkπHw,I1Ne,,Xjk。3.1.2—3—。3,:I5=I1I1N1+I2N2=0I4N4+I5N5=!########$0(11)(I1Ne)*=1,(11):(I1N1)*=N1Ne(I2N2)*=-N1Ne(I4N4)*=-N5Ne(I5N5)*=N5Ne!######################$(12)(3),—:XHM-=A2X12+B2X45(13),A=N1NeB=N5Ne!##########$(14)3.1.3—()-,I1,I5,:I5=I2+I4I1N1+I2N2=0I4N4+0.5(I1+I5)N5=!########$0(15)(I1Ne)*=1,(15):(I1N1)*=N1Ne(I2N2)*=-N1Ne(I4N4)*=(N1-N2)N4N5NeN2(2N4+N5)(I5N5)*=-2N1N4N5+N2N25NeN2(2N4+N5)!######################$(16)(3),-:XHM0=A2X12+BCX45(17),A=N1NeB=(N1-N2)N4N5NeN2(2N4+N5)C=2N1N4N5+N2N25NeN2(2N4+N5)!################$(18)3.2—4—。4,:I5=I1I5=I2+I4I1N1+I2N2+I3N3=0I4N4+I5N5=!############$0(19)I1Ne,~12453-Fig.3HV-MVshortcircuitdiagramatminimumtap3~12454-Fig.4HV-LVshortcircuitdiagram1211(I1Ne)*=1,(19):(I1N1)*=N1Ne(I2N2)*=1-N1Ne(I3N3)*=-1(I4N4)*=-N5Ne(I5N5)*=N5Ne (20)(3)—:XHL=-A(1-A)X12+AX13+(1-A)X23+B2X45(21),A=N1NeB=N5Ne (22)3.3—3.3.1—5-。5,:I5=I2+I4I2N2+I3N3=0I4N4+I5N5=0I1Ne+I3N3= 0(23)I1Ne,(I1Ne)*=1,(23):(I2N2)*=1(I3N3)*=-1(I4N4)*=-N4N5N2(N4+N5)(I5N5)*=N4N5N2(N4+N5) (24)(3),-:XML+=X23+B2X45(25),B=N4N5N2(N4+N5)(26)3.3.2—0.5N5(25)(26)N5,—:XML0=X23+B2X45(27),B=N4N5N2(2N4+N5)(28)3.3.3—(25)(26),N5=0,—:XML-=X23(29)4500kV,334MVA/334MVA/80MVA,5163姨(2303姨±2×2.5%)36kV,50Hz,1121.1A,1,(mm)67。4.1Xjk4.1.1Rogowskiρjkρ12=1-185+109+195π×2290=0.932~32455-Fig.5MV-LVshortcircuitdiagramatmaximumtap142719522992290397501306229080143623401851701229010919956Fig.6Sizesandparametersofwindinginmainlimb4646751420229075157056840168522907Fig.7Sizesandparametersofwindinginby-passlimb1346ρ23=1-50+80+185π×2290=0.956ρ13=1-50+80+185+109+195π×2290=0.914ρ45=1-75+75+40π×2290=0.9744.1.2NeNe=427+(1+68646)×340=8034.1.3etet=3600097=371.1V4.1.4Xjk67,(10)Xjk:X12=57.7%X23=29.9%X13=98.6%X45=22.5%4.2—4.2.1(8)-:XHM+=(427803)2×57.7+[427×68803×(803-427)]2×22.5=16.5%4.2.2(18)(19)—:A=427803=0.532B=(427-340)×646×68803×340×(2×646+68)=0.010C=2×427×646×68+340×682803×340×(2×646+68)=0.10!################$5XHM0=0.5322×57.7+0.010×0.105×22.5=16.4%4.2.3(13)—:XHM-=(427803)2×57.7+(68803)2×22.5=16.5%4.3—(21)—:XHL=427803×(1-427803)×57.7+427803×98.6+(1-427803)×29.9+(68646)2×22.5=52.3%4.4—4.4.1(25)-:XML+=29.9+[646×68340×(646+68)]2×22.5=30.6%4.4.2(27)—:XML0=29.9+[646×68340×(2×646+68)]2×22.5=30.1%4.4.3(29)—:XML-=29.9%5,。:[1],.[M].:,1990.[2],.[M].:,1986.:2008-05-12:(1968-),,,ABB、,。%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%1015,———()()1015。,、、。,。,、、,。14
本文标题:单相旁柱线性调压自耦变压器的阻抗计算
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