铁心迭积方式对空载损耗的影响

A#$%&’&()*(+,-.&&*.$/0$.1’(()2+.&)(+3,+&4’156(07*(+,!#$%!&$%(WujiangTransformerWorksCo.,Ltd.,Wujiang215200,China)89&1+./1:Thecoremassofsingle-phaseandthree-phasedistributiontransformerswithwoundcoreisanalyzedandcalculated.Theexamplesaregiven.:,%4(+7&:!#$%&’();*’+$,-’);./%%;0/1-+1/23’$:2006-04-10:(1973-),,,,,。!!,!#$%:,º:;;;;:TM402:B:1001-8425(2006)07-0016-031,,。,。,、、。,,。,,()。,。22.1。,,,。,,45°,2!,BVW2!2Bc(Bc)。1,,。,,。:!#$%%A=?;-@;’()*!+,)-.(*#$%%&72Fig.2Three-classjointincore1Fig.1Alternatingjointincore3Fig.3Five-classjointincore23B3=3×BG2=3×2!2Bc2=342!Bc235B5=5×BG4=5×2!2Bc4=582!Bc3Bn=2!n[2×(n-1)]Bc4BcnPo≈KB2545PnnPn=KBc2n22(n-1)26K1.7T12.4T1.9T21.8T31.5T461116%2.21452.2.1SZ9-20000/358SZ9-20000/354421Table1Magneticdatainjoint234567Bn/Bc1.411.060.940.880.850.825/%02533384041.54Fig.4Laminationofthree-classjointincore17435Fig.5Laminationoffive-classjointincore2SZ9-20000/35Table2No-loaddataofSZ9-20000/35powertransformer/kW/%112.6950.13212.6630.13312.5910.12412.7170.1412.6670.13511.6310.08611.6770.08711.6150.08811.5200.0811.6110.088.7%40%2.2.2SZ9-31500/356SZ9-31500/352432/56.3%25%33SZ9-31500/35Table3No-loaddataofSZ9-31500/35powertransformer/kW/%120.4720.10220.4760.1020.4740.10319.2050.08419.1990.08519.3070.07619.0100.0719.1800.0075InfluenceofDifferentRelativeJoint-PositionsofCoreLami-nationsonNo-LoadLossLUJin&’()U*i+,--+nShanghaiPowerTransformerRepair&ManufactureWorksCo.,Ltd.,Shanghai200436,ChinaAbstractTheprincipletoreduceno-loadlossintransformerbymulti-jointlaminationmethodisintroduced.Thereasonablejointstructureincoreispresented.KeywordsTransformerNo-loadlossCorelaminationAlternatejointMultijoint2005-11-111975-1963-18