换流变压器极性反转三维瞬态电场计算
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摘要
换流变压器是高压直流输电系统中的重要设备之一,运行过程中不仅要承受交流电压、直流电压和交直流电压叠加,还要承受极性反转电压的作用。为了考量换流变压器油纸等绝缘媒质的绝缘特性,首先,建立了瞬态电场的理论计算模型;其次,利用Ansys软件建立了换流变压器的三维瞬态电场计算模型;然后,考察了换流变压器油纸等绝缘结构在极性反转电压下的瞬态电场变化特性;最后,仿真分析了极性反转试验电压类型的不同对瞬态电场的影响。结果表明:油纸等绝缘结构在第一次极性反转过程中承受的瞬态电场值最大,且极性反转试验电压类型的不同对油纸等绝缘结构所承受的瞬态电场影响很大,为准确的进行换流变压器绝缘结构设计提供参考。
Aim at transient electric field calculation problem of oil-paper insulation structure of converter transformer under polarity reversal voltage. To evaluate its insulation property,first,this article adopts a finite element software Ansys to establish 3 D transient calculating model of a convert transformer. Secondly,analyze the transient electric field distribution in insulation configuration under polarity reversal voltage of the converter transformer. At the last,the influence that the different type of polarity reversal voltage has on the transient electric field. Result shows that: in the course of the first polarity reversal, oil-paper insulating structures withstand the maximum transient electric field, and the different type of polarity reversal voltage has great influences on the transient electric field. The valuable application conclusions are provided for the insulation design to converter transformer.
Aim at transient electric field calculation problem of oil-paper insulation structure of converter transformer under polarity reversal voltage. To evaluate its insulation property,first,this article adopts a finite element software Ansys to establish 3 D transient calculating model of a convert transformer. Secondly,analyze the transient electric field distribution in insulation configuration under polarity reversal voltage of the converter transformer. At the last,the influence that the different type of polarity reversal voltage has on the transient electric field. Result shows that: in the course of the first polarity reversal, oil-paper insulating structures withstand the maximum transient electric field, and the different type of polarity reversal voltage has great influences on the transient electric field. The valuable application conclusions are provided for the insulation design to converter transformer.
引文
[1]万琳,李琳,刘刚,等.换流变压器出线套管极性反转电场计算分析[J].华北电力大学报,2013,40(4):1-6.WAN Lin,LI Lin,LIU Gang,et al.Analysis of electric field of valveside outlet in convert transformer under polarity reversal voltage[J].Journal of North China Electric Power University,2013,40(4):1-6.
[2]王罡.大型换流变压器阀侧电场特性的研究[D].沈阳:沈阳工业大学,2009.WANG Gang.Study on electric field characteristics at ends of valve side converter transformer[D].Shenyang:Shenyang University of Technology,2009.
[3]陈建,李建柱,王建民,等.换流变压器在极性反转下的瞬态电场分布特性研究[J].变压器,2011,11(5):26-30.CHEN Jian,LI Jianzhu,WANG Jianmin,et al.Research on transient electric field distrib ution for converter transformer’s polarity reve rsal[J].Transformer,2011,11(5):26-30.
[4]唐聪,李岩,李冬雪.换流变压器极性反转电场的计算与分析[J].变压器,2011,48(11):19-22.TANG Cong,LI Yan,LI Dongxue.Calculation and analysis of polarity reverse electric field in converter transformer[J].Transformer,2011,48(11):19-22.
[5]李岩,李晓辉,唐聪,等.换流变压器阀侧绕组端部瞬态电场分析[J].高压电技术,2012,38(7):279-283.LI Yan,LI Xiaohui,TANG Cong,et al.Analysis on transient electric field at ends of valve-side winding in converter transformer[J].High Voltage Engineering,2012,38(7):279-283.
[6]李季,罗隆福,许加柱,等.换流变压器阀侧绝缘电场特性研究[J].高压电技术,2006,38(9):121-124.LI Ji,LUO Longfu,XU Jiazhu,et al.Study on electric field characteristics at ends of valve-side winding in converter transformer[J].High Voltage Engineering,2006,38(9):121-124.
[7]纪锋.换流变压器油纸绝缘结构瞬态电场的计算方法研究[D].北京:华北电力大学,2010.JI Feng.Study of calculating method of transient electrical field in converter transformer’s oil-paper insulation[D].Beijing:Journal of North China Electric Power University,2010.
[8]李琳,纪锋,刘刚.油-纸绝缘结构瞬态电场计算的状态空间有限元法[J].中国电机工程学报,2010,30(36):111-116.LI Lin,JI Feng,LIU Gang.A state-space finite element method for the calculation of transient electrical field in oil-paper insulation[J].Proceeding of the CSEE,2010,30(36):111-116.
[9]王冰,王清璞,孙优良.换流变压器阀侧绕组端部极性反转瞬态电场的计算与分析[J].变压器,2007,44(6):11-15.WANG Bing,WANG Qingpu,SUN Youliang.Calculation and analysis of polarity reverse transient electric field in valve winding end of converter transformer[J].Transformer,2007,44(6):11-15.
[10]陈庆国,张杰,高源,等.混合电场作用下换流变压器阀侧绕组电场分析[J].高电压技术,2008,34(3):484-488.CHEN Qingguo,ZHANG Jie,GAO Yuan,et al.Analysis of complex electrical field on valve side winding of converter transformer[J].High Voltage Engineering,2008,34(3):484-488.
[11]IEEE standard for general requirements and test code for oil-immersed HVDC converter transformers:IEEEStd C57129TM-2007[S].2008.
[12]WEN K C,ZHOU Y B,FU J,et al.A calculation method and some features of transient field under polarity reversal voltage in HVDC insulation[J].IEEETrans.on Power Delivery,1993,8(1):223-230.
[13]张艳丽,谢德馨.换流变压器内部暂态电场分析[J].沈阳工业大学学报,2001,23(6):467-470.ZHANG Yanli,XIE Dexin.Analysis of transient electric field in converter transformer[J].Journal of Shenyang University of Technology,2001,23(6):467-470.
[14]CHANDRUPATLE T R,BELEGUNDU A D.工程中的有限元方法[M].第3版.北京:机械工业出版社,2008:(下转第131页)54669-78.CHANDRUPATLE T R,BELEGUNDU A D.Introduction to finite elements in engineering[M].Beijing:China Machine Press,2008:69-78.
[15]WANG J M,ZHANG X L,WANG Y Q.Numerical analysis of transient stray field and performance parameters for 500 kV converter transformer[J].Electromagnetic Field Problem and Applications,TSI Press Series,USA,2008(22):161-164.
[16]TAKAHASHI E,TSUTSUM Y,OKUYAMA K,et al.Partial discharge characteristics of oil-immersed insulation systems under DC combined DC-AC and DC reversed polarity voltage[J].IEEE Transactions on Power Apparatus and Systems,1976,95(1):411-420.
[17]张喜乐,王建民,吴增泊,等.超高压直流换流变压器阀侧引出线电场的数值分析[J].变压器,2009,46(7):1-4.ZHANG Xile,WANG Jianmin,WU Zengbo,et al.Numerical analysis of electric field in valve side lead-(上接第124页)out wire for UHV DC converter transformer[J].Transformer,2009,46(7):1-4.
[18]王永红,魏新劳,陈庆国.极性反转电压下油纸复合绝缘的特性[J].中国电机工程学报,2012,32(19):161-168.WANG Yonghong,WEI Xinlao,CHEN Qingguo.Characteristics of oil-pressboard insulation under polarity reversal[J].Proceeding of the CSEE,2012,32(19):161-168.
[19]李晓辉,李岩,李冬雪.换流变压器绕组端部三维电场的数值算法及其绝缘设计[J].变压器,2013,50(5):19-22.LI Xiaohui,LI Yan,LI Dongxue.Analysis of 3D electric field at end of valve sidewinding in converter transformer[J].Transformer,2013,50(5):19-22.
[2]王罡.大型换流变压器阀侧电场特性的研究[D].沈阳:沈阳工业大学,2009.WANG Gang.Study on electric field characteristics at ends of valve side converter transformer[D].Shenyang:Shenyang University of Technology,2009.
[3]陈建,李建柱,王建民,等.换流变压器在极性反转下的瞬态电场分布特性研究[J].变压器,2011,11(5):26-30.CHEN Jian,LI Jianzhu,WANG Jianmin,et al.Research on transient electric field distrib ution for converter transformer’s polarity reve rsal[J].Transformer,2011,11(5):26-30.
[4]唐聪,李岩,李冬雪.换流变压器极性反转电场的计算与分析[J].变压器,2011,48(11):19-22.TANG Cong,LI Yan,LI Dongxue.Calculation and analysis of polarity reverse electric field in converter transformer[J].Transformer,2011,48(11):19-22.
[5]李岩,李晓辉,唐聪,等.换流变压器阀侧绕组端部瞬态电场分析[J].高压电技术,2012,38(7):279-283.LI Yan,LI Xiaohui,TANG Cong,et al.Analysis on transient electric field at ends of valve-side winding in converter transformer[J].High Voltage Engineering,2012,38(7):279-283.
[6]李季,罗隆福,许加柱,等.换流变压器阀侧绝缘电场特性研究[J].高压电技术,2006,38(9):121-124.LI Ji,LUO Longfu,XU Jiazhu,et al.Study on electric field characteristics at ends of valve-side winding in converter transformer[J].High Voltage Engineering,2006,38(9):121-124.
[7]纪锋.换流变压器油纸绝缘结构瞬态电场的计算方法研究[D].北京:华北电力大学,2010.JI Feng.Study of calculating method of transient electrical field in converter transformer’s oil-paper insulation[D].Beijing:Journal of North China Electric Power University,2010.
[8]李琳,纪锋,刘刚.油-纸绝缘结构瞬态电场计算的状态空间有限元法[J].中国电机工程学报,2010,30(36):111-116.LI Lin,JI Feng,LIU Gang.A state-space finite element method for the calculation of transient electrical field in oil-paper insulation[J].Proceeding of the CSEE,2010,30(36):111-116.
[9]王冰,王清璞,孙优良.换流变压器阀侧绕组端部极性反转瞬态电场的计算与分析[J].变压器,2007,44(6):11-15.WANG Bing,WANG Qingpu,SUN Youliang.Calculation and analysis of polarity reverse transient electric field in valve winding end of converter transformer[J].Transformer,2007,44(6):11-15.
[10]陈庆国,张杰,高源,等.混合电场作用下换流变压器阀侧绕组电场分析[J].高电压技术,2008,34(3):484-488.CHEN Qingguo,ZHANG Jie,GAO Yuan,et al.Analysis of complex electrical field on valve side winding of converter transformer[J].High Voltage Engineering,2008,34(3):484-488.
[11]IEEE standard for general requirements and test code for oil-immersed HVDC converter transformers:IEEEStd C57129TM-2007[S].2008.
[12]WEN K C,ZHOU Y B,FU J,et al.A calculation method and some features of transient field under polarity reversal voltage in HVDC insulation[J].IEEETrans.on Power Delivery,1993,8(1):223-230.
[13]张艳丽,谢德馨.换流变压器内部暂态电场分析[J].沈阳工业大学学报,2001,23(6):467-470.ZHANG Yanli,XIE Dexin.Analysis of transient electric field in converter transformer[J].Journal of Shenyang University of Technology,2001,23(6):467-470.
[14]CHANDRUPATLE T R,BELEGUNDU A D.工程中的有限元方法[M].第3版.北京:机械工业出版社,2008:(下转第131页)54669-78.CHANDRUPATLE T R,BELEGUNDU A D.Introduction to finite elements in engineering[M].Beijing:China Machine Press,2008:69-78.
[15]WANG J M,ZHANG X L,WANG Y Q.Numerical analysis of transient stray field and performance parameters for 500 kV converter transformer[J].Electromagnetic Field Problem and Applications,TSI Press Series,USA,2008(22):161-164.
[16]TAKAHASHI E,TSUTSUM Y,OKUYAMA K,et al.Partial discharge characteristics of oil-immersed insulation systems under DC combined DC-AC and DC reversed polarity voltage[J].IEEE Transactions on Power Apparatus and Systems,1976,95(1):411-420.
[17]张喜乐,王建民,吴增泊,等.超高压直流换流变压器阀侧引出线电场的数值分析[J].变压器,2009,46(7):1-4.ZHANG Xile,WANG Jianmin,WU Zengbo,et al.Numerical analysis of electric field in valve side lead-(上接第124页)out wire for UHV DC converter transformer[J].Transformer,2009,46(7):1-4.
[18]王永红,魏新劳,陈庆国.极性反转电压下油纸复合绝缘的特性[J].中国电机工程学报,2012,32(19):161-168.WANG Yonghong,WEI Xinlao,CHEN Qingguo.Characteristics of oil-pressboard insulation under polarity reversal[J].Proceeding of the CSEE,2012,32(19):161-168.
[19]李晓辉,李岩,李冬雪.换流变压器绕组端部三维电场的数值算法及其绝缘设计[J].变压器,2013,50(5):19-22.LI Xiaohui,LI Yan,LI Dongxue.Analysis of 3D electric field at end of valve sidewinding in converter transformer[J].Transformer,2013,50(5):19-22.