P级电流互感器励磁特性曲线的计算与控制

整理文档很辛苦,赏杯茶钱您下走!

免费阅读已结束,点击下载阅读编辑剩下 ...

阅读已结束,您可以下载文档离线阅读编辑

资源描述

P(110135):P,,。:;;:TM401+.1:B:1001-8425(2009)07-0011-041GB1208—2006《》,P,。、,。2GB1208—2006《》P:、。:Ea1f=Ka1fI2n(r2+Rb)2+(x2+Xb)2姨(1)Ea1f———,VKa1f———I2n———,Ar2、x2———、,ΩRb、Xb———、,Ω(1),。,。Balf,“”I0alf。,,I2KalfI2n。,,:E2=I2(r2+Rb)2+(x2+Xb)2姨=(Ka1fI2n-I01)(r2+Rb)2+(x2+Xb)2姨(2)E2B。I01。(1)(2),(1)。(1)(2):Ea1f=E2+I01(r2+Rb)2+(x2+Xb)2姨(3),,,,,。(ControlandCalculationofMagnetizingCharacteristicCurveofPClassCurrentTransformerXIAOYao蛳rong(ChuanqiElectric(Shenyang)Co.,Ltd.,Shenyang110135,China)Abstract:TherequirementsformagnetizingcharacteristicofPclasscurrenttransformerinNantionalStandardarediscussed.Thecalculationandtestmethodsoftwomagnetizingchar-acteristicsarepresented.Theprincipletocontrolmagnetizingcharacteristicispresented.Keywords:Currenttransformer;Magnetizingcharacteristic;Inducedpotential46720097TRANSFORMERVol.46JulyNo.72009462Table2Exampleduringlargepartofwindingimpedanceintotalsecandaryimpedance:1200A/5A,N2n=240,15VA,10P30。:180mm/254mm×45mm;Sc=16.15cm2;Lc=68.17cm;Z2=0.3956W(75℃);Ealf=144.593V;Balf=1.6803T;I0alf=0.5155A。/V144.59Balf/T1.6803B/T1.6789B02/T1.6780/V145.0()/T1.6827),:E02=U02-I02r22+x22姨(4)U02=Ealf,E02Ealf,B02Balf,I02I0alf。E02E2。,(3)(4):E02-E2=I01(r2+Rb)2+(x2+Xb)2姨-I02r22+x22姨(5),I02I01,,(5),E02E2,B02B。,E02E2,B02B。12。,,3,124。1。1,,。,。2。2,。。3,,Ealf,Ealf。,Balf,,,。。(1)Ealf,E,B,H,I0,,。:,。,,55,51。2。,,(12)。(2)“”I0alf(,,05),,。,,,Ealf。,。,,。(1)Ealf,(2),,(1)。4。(1),,1Table1Exampleofsmallimpedanceofwinding:1200A/5A,N2n=240,50VA,10P20。:180mm/260mm×70mm;Sc=27.16cm2;Lc=69.12cm;Z2=0.5076W(75℃);Ealf=244.83V;Balf=1.6919T;I0alf=0.5631A。/V244.83Balf/T1.6919B/T1.6895B02/T1.6899/V245.0()/T1.691112P7,,。,:100Ic0Ka1fI2n=εj≤,%(6)Ka1f———I2n———,AIc0———,Aεj———,,。(2),((1)),。。。,,(7):Kx=εc100Ic0Ka1fI2n(7)εc———,%Ic0———,AKa1f———I2n———,Aεc,(8)Iz0()。Iz0=KxIc0(8)Kx———,,Kx。,,,。(3),。①。,,,,。,,。。,。,(,),。5P,5%,10P,10%。。,。,,。,。②。()。,。,,。。,。,Ea1f。,,,,,。,。,,,,,()。。。,,,。5(38)1346N=35-T(9)(2),(DP):DP=1193.75×(1-r)T(10)250=DP×(1-r)n(11)(7)、(10)(11):r=1-[0.34-0.291×lgfurfural]1T(12)n=log0.34-0.291×lgfurfural(0.721.17-lgfurfural)T(13)(9);(13)。4.3(1),0.5mg/L,,,furfural=0.5mg/L(7):DP=1.17-lg0.50.00288=510.77,,2。(2)1998(15)1.33mg/L,35kV,10000kVA。:DP=1.17-lg1.330.00288=373.6244r=0.0748n=5.16842004,。2006,,。。5(1)。、、。(2),。(3),,。:[1].(2)[J].,1995,32(11):27-31.[2],,.LVIFRA[J].,1997,23(1):13-15.[3].[M].:,1998.[4]DongM.Agingdiagnosisofsolidinsulationforlargeoil-immersedoowertransformers[C].ElectInsul.&Di-electPhen.2002AnnualReportConference,2002:400-403.[5]EmsleyAM,XiaoHeywoodRJ,Degradationofcellu-losicinsulationinpowertransformers[J].IEEProc.-Sci.Meas.Technol.,2000,147(3):115-119.[6]MechefskeCK.Correlatingpowertransformertankvi-brationcharacteristicstowindinglooseness[J].Insight:Non-DestructiveTestingandConditionMonitoring,1995,37(8):599-604.:2008-07-28:(1985-),,,,;(1975-),,,,。!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!(13);。,。,。:2008-06-19:(1936-),,,(),。38

1 / 4
下载文档,编辑使用

©2015-2020 m.777doc.com 三七文档.

备案号:鲁ICP备2024069028号-1 客服联系 QQ:2149211541

×
保存成功