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,(125000):,,。:;;;:TM406:B:1001-8425(2009)12-0054-04AnalysisofAbnormalPhenomenonofTransformerNoiseJINZhao-wei,LIHong-you(HuludaoElectricPowerEquipmentFactory,Huludao125000,China)Abstract:Theabnormalphenomenonoftransformernoiseisanalyzed.Theeffectofthephenomenonontransformerandgridareexpounded.TheabilityofDCanti-magnetic-biasandsuppressionmeasuresareintroduced.Keywords:Transformer;Noise;DCmagneticbisa;Effect1,,-,,,,。22007,220kV,,。,61dB(A),88dB(A),。,。,,,6h,60dB(A)~65dB(A),,。,,,,,,,1。。1,:,;,;11∶30,15A,。,、220kV4612200912TRANSFORMERVol.46DecemberNo.1220091Fig.1CurvesofDCandnoiseinShengliSubstation10090807060504030201008∶048∶138∶228∶318∶408∶498∶589∶069∶159∶249∶429∶339∶5110∶0010∶0910∶3610∶4510∶2710∶1810∶5411∶1711∶2611∶36dB(A)20181614121086420/A、12,。2,,3h,2;3,,。,1。1,,,。,。3,V0,,,,。,ΔV,,,3。ΔV,。,,。4,,4b,4c。,I(t),,;,ΦoΦm,Φ,Φ=Φo+Φmsin(ωt)。,,,,(),,,1,3,5,…,0,2,4,…,,。,,,。,,。,、,。,,,,,,。,,,,10km,。4,,,。(1)、。,,,1Table1TestedresultsofDCandnoiseinsubstations/dB(A)/A278.367.472.74.040.061.33370.268.469.6000170.868.369.31.050.270.71569.56868.80.210.040.252716970.20.320.10.322Fig.2CurvesofDCandnoiseofNo.2transformer9080706050403020100dB(A)15∶3015∶4515∶5716∶2016∶0816∶3016∶4216∶5317∶0317∶2617∶3617∶1517∶51181614121086420/A3Fig.3DiagramofinvadedDCV0VIdoIdo5546Φ(t)ΦmaxΦ00(a)(b)(c)i=Φ(t)i(t)i(t)0πωt0Φ(t)πωt4Fig.4InfluenceofDCcomponenttotransformerexcitingcurrent,,,。(2)。,,,,。、、,,。。(3)()。,,,。,,。(4)。,,,,,。,,,,,。(5)。,,、、、。,,,。(6)。,,,,。、、,,,,。(7)。,,,。,。(8),,。,,。,,,。,,。,,。,,220kV34A,94dB(A)。,,。5,,。,,,。,,,,,,,;,,,,,;,,,。Y,,。,,:56、12:2009-05-07:(1976-),,,,;(1967-),,,,。(1)。120MVA,,,,,800mm,,,。(2),,,,,,,。(3),,,、、,。,,。,,。6,,,。,,,。,,,。(1)。,:①,,,,。②,,,。(2)。,,。,,,,。(3)。,,。,,,;,。7,,,,,,。[5]。,,15A,,,,,,。,,10km,。,,,。,,,,。,,,。:[1],,,.[J].,2003,29(8):12-13,28.[2],.[J].,1998,36(1):15-19.[3],,.[J].,2007,20(10):20-23.[4].[J].,2008,24(4):28-31.[5],,,.[J].,2006,30(12):88-90.57
本文标题:变压器噪声异常现象分析
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