变压器绕组变形与等效电参数变化对应关系研究
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摘要
变压器绕组变形与等效电参数变化的对应关系对变压器绕组变形诊断精度有重要影响。通过建立变压器绕组等效电路模型,得到了绕组结构与等效电参数之间的对应关系。在此基础上,以某变压器为例,运用电磁—结构耦合有限元方法,根据弹塑性力学原理,计算了变压器绕组在短路电磁力作用下发生的塑性变形状态、应力分布及绕组的轴向和辐向位移;然后,运用能量法计算得到了不同类型和程度的绕组变形与绕组等效电路电参数之间的对应关系。研究结果可以为从等效电路参数变化的角度诊断变压器绕组变形状态提供依据,从而提高变压器绕组变形诊断精度。
The corresponding relationship between the transformer winding deformation and the variation equivalent electrical parameters has important influence on the accuracy of diagnosis of transformer winding deformation.The corresponding relationship between the winding structure and the equivalent electrical parameters is obtained by establishing the equivalent circuit model of transformer winding.On this basis,one transformer is taken as an example and the plastic deformation state,stress and the axial and radial displacement of the transformer winding under the action of short circuit electromagnetic force are calculated respectively using the electromagnetic-structure coupled finite element method,according to the elastic-plastic mechanics principle.The energy method is used to calculate the winding equivalent circuit electrical parameters of the different type and level of winding deformation,and thus the corresponding relationship between the different type and level of winding deformation and winding equivalent circuit electrical parameters is achieved.The research results can provide reference for diagnosis of deformation state of transformer winding based on the change of equivalent circuit parameters,so as to improve the diagnostic accuracy of transformer winding deformation.
The corresponding relationship between the transformer winding deformation and the variation equivalent electrical parameters has important influence on the accuracy of diagnosis of transformer winding deformation.The corresponding relationship between the winding structure and the equivalent electrical parameters is obtained by establishing the equivalent circuit model of transformer winding.On this basis,one transformer is taken as an example and the plastic deformation state,stress and the axial and radial displacement of the transformer winding under the action of short circuit electromagnetic force are calculated respectively using the electromagnetic-structure coupled finite element method,according to the elastic-plastic mechanics principle.The energy method is used to calculate the winding equivalent circuit electrical parameters of the different type and level of winding deformation,and thus the corresponding relationship between the different type and level of winding deformation and winding equivalent circuit electrical parameters is achieved.The research results can provide reference for diagnosis of deformation state of transformer winding based on the change of equivalent circuit parameters,so as to improve the diagnostic accuracy of transformer winding deformation.
引文
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[9]武剑利.频响分析法检测变压器绕组变形的理论研究[D].武汉:武汉大学,2004.WU Jianli.Study on frequency response analysis method in diagnosing transformer winding deformation[D].Wuhan:Wuhan University,2004.
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[11]ISLAM S,LEDWICH G.Locating transformer faults through sensitivity analysis of high frequency modeling using transfer function approach[C]//IEEE International Conference Record of the Symposium on Electrical Insulation.Montreal,Canada:IEEE,1996:38-41.
[12]ISLAM S.Detection of shorted turns and winding movements in large power transformers using frequency response analysis[C]//IEEE Power Engineering Society Winter Meeting.Singapore:IEEE,2000:2233-2238.
[13]朱明林.频响分析法及其模型辨识检测和诊断变压器绕组变形的研究[D].上海:上海交通大学,2001.ZHU Minglin.Research on detection and diagnosis of transformer winding deformation using frequency response analysis method and its model identification[D].Shanghai:Shanghai Jiao Tong University,Doctoral Dissertation,2001.
[14]ABU-SIADA A,HASHEMNIA N,ISLAM S.Understanding power transformer frequency response analysis signatures[J].IEEE Electrical Insulation Magazine,2013,29(3):48-56.
[15]ABU-SIADA A,ISLAM S.A novel online technique to detect power transformer winding faults[J].IEEE Transactions on Power Delivery,2012,27(1):849-857.
[16]MITCHELL S D,WELSH J S.Modeling power transformers to support the interpretation of frequency-response analysis[J].IEEE Transactions on Power Delivery.,2011,26(1):2705-2717.
[17]RAHIMPOUR E,JABBARI M,TENBOHLEN S.Mathematical comparison methods to assess transfer functions of transformers to detect different types of mechanical faults[J].IEEE Transactions on Power Delivery,2010,25(1):2544-2555.
[18]WANG M,JOHN A,SRIVASTAVA K.Improved detection of power transformer winding movement by extending the FRA high frequency range[J].IEEE Transactions on Power Delivery,2005,20(3):1930-1938.
[19]CHRISTIAN J,FESER K.Procedres for detecting winding displacements in power transformers by the transfer function method[J].IEEE Transactions on Power Delivery,2004,19(1):214-220.
[20]HASHEMNIA N,ABU-SIADA A,ISLAM S.Improved power transformer winding fault detection using FRA diagnostics-Part 1:Axial displacement simulation[J].IEEETransactions on Dielectrics and Electrical Insulation,2015,22(1):556-563.
[21]HASHEMNIA N,ABU-SIADA A,ISLAMA S.Improved power transformer winding fault detection using FRA diagnostics-Part 2:Radial deformation simulation[J].IEEE Transactions on Dielectrics and Electrical Insulation,2015,22(1):564-570.
[22]ROBERT J C,SELWYN P,Mechanical properties of copper in relation to power-transformer design[J].Power Engineering,1987,1(3):154-157.
[23]Ansys,Inc..Ansys mechanical APDL and mechanical applications theory reference[H].[S.l.]:Ansys Theoretical Analysis Manual,Release 13.0,2010.
[2]高树国,张扬,陈志勇,等.一起220 kV变压器绕组短路损坏事故分析[J].高压电器,2012,48(4):115-118.GAO Shuguo,ZHANG Yang,CHEN Zhiyong,et al.Analysis of a 220 kV transformer windings breakage fault caused by short-circuit[J].High Voltage Apparatus,2012,48(4):115-118.
[3]曹小龙,胡春梅,曹小虎,等,变压器频率响应法测试结果的影响因素分析及改善[J].高压电器,2012,48(7):81-87.CAO Xiaolong,HU Chunmei,CAO Xiaohu,et al.Influencing factors on deformation diagnosis of transformer windings[J].High Voltage Apparatus,2012,48(7):81-87.
[4]秦家远,刘兴文,申积良.电力变压器频率响应分析法综述[J].湖南电力,2009,29(4):60-62.QIN Jiayuan,LIU Xingwen,SHEN Jiliang.Power transformer frequency response analysis method[J].Hunan Electric Power,2009,29(4):60-62.
[5]RYDER S A.Diagnosing transformer faults using frequency response analysis[J].IEEE Electrical Insulation Magazine,2003,19(2):16-22.
[6]电力变压器绕组变形频率响应分析法:DL/T 911-2004[S].2005.Frequency response analysis on winding deformation of power transformers:DL/T 911-2004[S].2005.
[7]张鑫.基于频响法的变压器绕组变形专家诊断系统[D].上海:上海交通大学,2014.ZHANG Xin.The expert diagnosis system of transformer winding deformation based on frequency response method[D].Shanghai:Shanghai Jiao Tong University,2014.
[8]孙翔,何文林,詹江杨,等.电力变压器绕组变形检测与诊断技术的现状与发展[J].高电压技术,2016,42(4):1207-1220.SUN Xiang,HE Wenlin,ZHAN Jiangyang,et al.Current status and development of test and diagnostic technique of transformer winding deformation[J].High Voltage Engineering,2016,42(4):1207-1220.
[9]武剑利.频响分析法检测变压器绕组变形的理论研究[D].武汉:武汉大学,2004.WU Jianli.Study on frequency response analysis method in diagnosing transformer winding deformation[D].Wuhan:Wuhan University,2004.
[10]ISLAM S M,COATES K M,LEDWICH G.Identification of high frequency transformer equivalent circuit using Matlab from frequency domain data[C]//IEEE Industry Applications Society Annual Meeting.New Orleans:IEEE,1997:357-364.
[11]ISLAM S,LEDWICH G.Locating transformer faults through sensitivity analysis of high frequency modeling using transfer function approach[C]//IEEE International Conference Record of the Symposium on Electrical Insulation.Montreal,Canada:IEEE,1996:38-41.
[12]ISLAM S.Detection of shorted turns and winding movements in large power transformers using frequency response analysis[C]//IEEE Power Engineering Society Winter Meeting.Singapore:IEEE,2000:2233-2238.
[13]朱明林.频响分析法及其模型辨识检测和诊断变压器绕组变形的研究[D].上海:上海交通大学,2001.ZHU Minglin.Research on detection and diagnosis of transformer winding deformation using frequency response analysis method and its model identification[D].Shanghai:Shanghai Jiao Tong University,Doctoral Dissertation,2001.
[14]ABU-SIADA A,HASHEMNIA N,ISLAM S.Understanding power transformer frequency response analysis signatures[J].IEEE Electrical Insulation Magazine,2013,29(3):48-56.
[15]ABU-SIADA A,ISLAM S.A novel online technique to detect power transformer winding faults[J].IEEE Transactions on Power Delivery,2012,27(1):849-857.
[16]MITCHELL S D,WELSH J S.Modeling power transformers to support the interpretation of frequency-response analysis[J].IEEE Transactions on Power Delivery.,2011,26(1):2705-2717.
[17]RAHIMPOUR E,JABBARI M,TENBOHLEN S.Mathematical comparison methods to assess transfer functions of transformers to detect different types of mechanical faults[J].IEEE Transactions on Power Delivery,2010,25(1):2544-2555.
[18]WANG M,JOHN A,SRIVASTAVA K.Improved detection of power transformer winding movement by extending the FRA high frequency range[J].IEEE Transactions on Power Delivery,2005,20(3):1930-1938.
[19]CHRISTIAN J,FESER K.Procedres for detecting winding displacements in power transformers by the transfer function method[J].IEEE Transactions on Power Delivery,2004,19(1):214-220.
[20]HASHEMNIA N,ABU-SIADA A,ISLAM S.Improved power transformer winding fault detection using FRA diagnostics-Part 1:Axial displacement simulation[J].IEEETransactions on Dielectrics and Electrical Insulation,2015,22(1):556-563.
[21]HASHEMNIA N,ABU-SIADA A,ISLAMA S.Improved power transformer winding fault detection using FRA diagnostics-Part 2:Radial deformation simulation[J].IEEE Transactions on Dielectrics and Electrical Insulation,2015,22(1):564-570.
[22]ROBERT J C,SELWYN P,Mechanical properties of copper in relation to power-transformer design[J].Power Engineering,1987,1(3):154-157.
[23]Ansys,Inc..Ansys mechanical APDL and mechanical applications theory reference[H].[S.l.]:Ansys Theoretical Analysis Manual,Release 13.0,2010.