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1!1!2!1.!##$%;%&!##$!#:,、,º:;;;!,。、。。、,。,、。,,,,,。,,,、。,。,,[1]。。,,。,,-()。,。,,。,1kHz,。,,,,;,,,;,,。1。,,,,。,。。2。2,。,,。L－－－－－－#－－－$)－－－$*－－－+)－－－Fig.1Equivalentiruitoftransformerwinding!#$$$%#$9:;=?:@E:&’()!*+,’-./0’)#$$$%42。,。,,,,,。。,。!3.1,。,:L=KN2D×10-6H(1)N－－－D－－－,cmK－－－,K=f(b,l,D),l、bl－－－,cmb－－－,cm(1),N、D,;l、b,。3.2,,,,;,,。,;,。。.2.1(1K),CtC0。:Ct1!0!2Dha213435!2Dha2610-2,27(2)C013435!8Dba8610-2,27(9)!2－－－a2－－－,cm!8－－－a8－－－,cmh－－－,cmK－－－CtC0.2.2(1:)(C;)(C;t),:C;12!=!l?@R@R11A4A!l?@R@R61=-2,27(B)C;t19B×1CAA!;l?@RtR;×10D2,27(5)!－－－R@－－－,cmR－－－,cmRt－－－,cmR;－－－,cm!;－－－l－－－,cmD、b,a2、a8,,,;R@,R;,l,,,,。,,、。,,,,。,,,,。,,。,,,。、、。,20EHF,。,,,。,,,。(90EHFG200EHF),。2Fig.2Frequenyurveoftypialwinding!!!10(200kHz～1MHz),,,,,。,。,,,。,,,,。,。![1]1,SFZ8-40000/110,199712,199712。1,,,;a、b,ca、b。ca、b,,,,,。150kHz～250kHz,,,,,3。,c,,c,,。[2]3,SFZ7-40000/110,19957。,3、,3。、,,;C2H2CO2,;,,;,ba、c(,4)。,ba、c,b。,,,a、c,,b。。,,。,。,,、、,、。:[1],.[J]..1998,(4):8-10.[2].[J].,1995,(1):16-22.[3],,.[J].,2001,27(4):74-75.31Fig.3FrequenyurveofLVwindingdeformationinDongdiNo.1transformer43Fig.4FrequenyurveofLVwindingdeformationinShanunNo.3maintransformer!:2003-09-24:(1954-),,,,;(1979-),,,,。Re#e$%&’()*+,-)(#+#(./(0e%1%,)#.(%2e%3+)4+)-*e.(%2,5+()6789:!#$%&’(&);*+#,&%-’.&;*+/012&%3’(&(1.WuhanUniversity,Wuhan430072,China;2.WuhanHighVoltageResearchInstitute,Wuhan430074,China):6#5%,&5:Theprincipletodiagnosetransformerwindingdeformationbyfrequencyresponseanaly-sis(FRA)isdiscussed.Themethodtocalculatewindinginductanceandcapacitanceispresented.Itsreliabilityisverified.=e70(%4#:!#$%&%’()*%+,%;-%,./,(01%,)2(),3(’41)5);65(75(8;9,*%+’&5(!!!!!!##:,,º:;;;;:TM835:B:1001-8425(2005)10-0026-05!(PD)。。[1],。、,。,[2],,。,,。,,,。,,。Mallat1992,[3]。[4、5],。,==============================================!#$$$%#$19:?8@9AB9&’()!*+,’-./0’)#$$$%