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时间:2020-03-25
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1、第36卷第2期电网技术Vol.36No.22012年2月PowerSystemTechnologyFeb.2012文章编号:1000-3673(2012)02-0200-06中图分类号:TM743文献标志码:A学科代码:470·4014变压器铁心磁滞模型参数辨识12111李晓萍,彭青顺,李金保,文习山,鲁海亮(1.武汉大学电气工程学院,湖北省武汉市430072;2.武汉市建筑工程质量监督站,湖北省武汉市430015)ParameterIdentificationofHysteresisLoopModelforTransformerCore12111LIXiaoping,
2、PENGQingshun,LIJinbao,WENXishan,LUHailiang(1.SchoolofElectricalEngineering,WuhanUniversity,Wuhan430072,HubeiPronvince,China;2.ConstructionQualitySupervisionStationofWuhan,Wuhan430015,HubeiProvince,China)ABSTRACT:Inallusiontothedifficultyofdeterminingfive关键词:Jiles-Atherton模型;磁滞回线;连续算法;优化;
3、parametersinJiles-Athertonmodeldescribinghysteresis均方误差;参数辨识characteristicofironcore,bymeansoffindingoutimpacting0引言ruleofeachparameteroncharacteristicquantityofhysteresisloop,reasonableinitialvaluestofittheseparametersaredecided.当高压直流输电单极大地回路运行时,会引起Theseparametersaredecidedone-after-ano
4、therbyoptimization变压器直流偏磁[1],造成励磁电流谐波含量增加,algorithm,i.e.,theminimumvalueofmean-squareerrorbetween无功损耗、噪声及振动增大等一系列问题,将直接thehysteresisloopmeasuredbyexperimentandthehysteresis影响到变压器的安全运行。loopcalculatedbygivenfiveparametersistakenasthe为解决上述问题,文献[2-5]研究了流过变压器optimizationobjective,andthestart-
5、upandstopofoptimization直流电流的计算等问题;另一部分学者采用Jiles-ofeachparameteraswellastheitspercentagevariationarecontrolledbythefeedbackofabove-mentionedminimumvalueAtherton模型模拟变压器铁心磁滞特性,研究了直ofmean-squareerror,thusasetofparameterswithbest流电流对变压器的影响。文献[6-7]主要研究了直流approximationforJiles-Athertonmodelisat
6、tained.Thefitting偏磁对变压器谐波的影响,找出了谐波分量(特别是resultsofhysteresisloopparametersof30Z120siliconsteel偶次谐波)随中性点直流电流的增加快速增长的特sheetproducedbyNipponSteelCorporationshowthatthe性。文献[8]主要研究了直流偏磁对电容器组电流各proposedalgorithmissimpleandpracticable.Thecorrectness次谐波的影响,并给出了改变串联电抗率可提高电andeffectivenessoftheprop
7、osedalgorithmareverifiedby容器组耐受直流偏磁电流的建议。文献[9]分析了自comparisonresultsbetweenfitteddataandtheoreticaldataaswellasthatbetweenexperimentaldataandactualdataof耦变压器受直流偏磁时,励磁电流谐波和无功损耗practicalsiliconsteelsheets.均增加的现象。这些文献在采用Jiles-Atherton模型KEYWORDS:Jiles-Athertonmodel;hysteresisl
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