特高压氧化锌避雷器电场分布计算
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摘要
特高压氧化锌避雷器是绝缘配合的基础,避雷器性能的好坏直接影响整个变电站运行的安全稳定。以1 000 kV变电站用氧化锌避雷器为例,采用Ansoft Maxwell有限元软件仿真计算其周围电场分布情况,尤其是距离地面2 m高度处,避雷器一侧水平方向上沿线场强大小;并分析避雷器发生损坏时,电场强度变化情况,以及考虑有无高压线、高压引线的长度、求解域大小及底座的高度对电场分布的影响。结果表明:各避雷器损坏情况下,最大场强均有所减小;去除高压线和缩小求解域避雷器周围最大场强增大;缩短高压引线的长度,距地面2 m高度处沿线场强有所增大;提高底座高度,沿线场强减小。研究结果为避雷器电场分析提供了一定的依据。
Surge arrester used for UHV power systems is a base of insulation co-ordination.The safety and stability to whole substation is directly influenced by the characteristics of surge arrester.A case study of 1 000 kV ZnO surge arrester for substation,the simulation calculation of electric field around arrester,especially the field strength which from the ground 2 m height along the level of the side of surge arrester is carried out by using finite element analysis software Ansoft Maxwell.Analyzing the changes of field strength when arrester damage occurs and considering the influence of the high-voltage line,length of high-voltage lead,the size of solving domain and the height of base on electric field distribution.The results demonstrate that the maximum field strength around the surge arrester has reduced when the arrester damage occurs in different section,and it would increase through removing the high voltage line and reducing the solution domain.Shortening the length of high-voltage lead,the field strength has increased which from the ground 2 m height along the level of the side of surge arrester.However,the electric field strength decreases when heighten the base.The results of study provide a support for electric field analysis of ZnO surge arrester.
Surge arrester used for UHV power systems is a base of insulation co-ordination.The safety and stability to whole substation is directly influenced by the characteristics of surge arrester.A case study of 1 000 kV ZnO surge arrester for substation,the simulation calculation of electric field around arrester,especially the field strength which from the ground 2 m height along the level of the side of surge arrester is carried out by using finite element analysis software Ansoft Maxwell.Analyzing the changes of field strength when arrester damage occurs and considering the influence of the high-voltage line,length of high-voltage lead,the size of solving domain and the height of base on electric field distribution.The results demonstrate that the maximum field strength around the surge arrester has reduced when the arrester damage occurs in different section,and it would increase through removing the high voltage line and reducing the solution domain.Shortening the length of high-voltage lead,the field strength has increased which from the ground 2 m height along the level of the side of surge arrester.However,the electric field strength decreases when heighten the base.The results of study provide a support for electric field analysis of ZnO surge arrester.
引文
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[13]路彦峰.氧化锌避雷器电位分布数值计算研究[D].西安:西安电子科技大学,2007.LU Yanfeng.Research on numerical calculation of the potential distribution of ZnO surge arrester[D].Xi'an:Xi'an University of Electronic Science and Technology,2007.
[14]陈忠,黄贵均.应用二维轴对称场有限元法的电站型MOA电位分布计算及均压设计[J].电瓷避雷器,2016(2):155-161.CHEN Zhong,HUANG Guijun.Potential distribution calculation and uniform design for 220 kV station type ZnO surge arrester based on 2D axial asymmetry finite element method[J].Insulations and Surge Arrester,2016,(2):155-161.
[15]韩昊,何相奎.500 kV悬挂式带串联间隙线路避雷器电场分布研究[J].科技创新导报,2012,15(1):4-7.HAN Hao,HE Xiangkui.Electric field distribution of 500 kVsuspension type line arrester with pure air clearance in series[J].Science and Technology Consulting Herald,2012,15(1):4-7.
[16]韩社教,戴栋,马西奎,等.应用有限元法计算氧化锌避雷器电位分布[J].中国电机工程学报,2001,21(12):105-108.HAN Shejiao,DAI Dong,MA Xikui,et al.Calculation of potential distribution for zinc-oxide surge arrester by finite element method[J].Proceedings of the Chinese for Electrical Engineering,2001,21(12):105-108.
[17]郭洁,何计谋,李晓峰.750 kV金属氧化物避雷器电位分布研究[J].中国电力,2006,39(1):15-17.GUO Jie,HE Jimou,LI Xiaofeng.Study on the potential distribution of 750 kV metal oxide surge arrester[J].Electric Power,2006,39(1):15-17.
[18]安翠翠,刘航,王琼,等.特高压直流母线MOA的电位与电场分析[J].高压电器2009,45(5):9-11.AN Cuicui,LIU Hang,WANG Qiong,et al.Calculation of electric potential and field distribution of UHVDC bus bar MOA[J].High Voltage Apparatus,2009,45(5):9-11.
[19]岳亚丽,江少成,张源斌.800 kV MOA的电位分布数值分析和测量[J].高压电器,2009,45(4):63-64.YUE Yali,JIANG Shaocheng,ZHANG Yuanbin.Numerical analysis and measuring for the potential distribution of800 kV MOA[J].High Voltage Apparatus,2009,45(4):63-64.
[20]陈德兴,张永记,晋文杰,等.紧凑型运行方式下220 kV金属氧化物避雷器电位与电场分布的计算[J].高压电器,2011,47(2):39-42.CHEN Dexing,ZHANG Yongji,JIN Wenjie,et al.Calculation of electric potential and field distribution of 220 kV MOAunder compact operation mode[J].High Voltage Apparatus,2011,47(2):39-42.
[21]赵宇,马文玲,窦小晶,等.1 000 kV瓷外套MOA电位分布计算与试验[J].高电压技术,2008,34(1):11-15.ZHAO Yu,MA Wenlling,DOU Xiaojing,et al.Calculation and measurement of potential distribution of 1 000 kV metal oxide arrester[J].HighVoltageEngineering,2008,34(1):11-15.
[2]章爱武,刘春翔,朱弘钊,等.500 kV线路避雷器电场分析及优化设计[J].电瓷避雷器,2014(5):41-45.ZHANG Aiwu,LIU Chunxiang,ZHU Hongzhao,et al.Electric field analysis and optimized design of the arrester on500 kV transmission lines[J].Insulations and Surge Arrester,2014(5):41-45.
[3]王世山,汲胜昌.计及金属塔和母线效应的悬挂式避雷器电场计算及结构优化[J].电工技术学报,2005,20(6):30-34.WANG Shishan,JI Shengchang.Electric calculation and structure optimization for suspended type surge arresters considering the effect of metal towers and buses[J].Transactions of China Electrotechnical Society,2005,20(6):30-34.
[4]韩社教,李平舟,路彦峰,等.1 000 kV立柱式氧化锌避雷器三维电位分布计算及均压环设计[J].中国电机工程学报,2007,27(27):50-55.HAN Shejiao,LI Pingzhou,LU Yanfeng,et al.3D potential distribution calculation and design of grading rings for posttype ZnO surge arrester for 1 000 kV substation[J].Proceedings of the Chinese for Electrical Engineering,2007,27(27):50-55.
[5]王世山.运行中750 kV悬挂式避雷器电场计算及设计优化[J].南京航空航天大学学报,2005,37(6):801-806.WANG Shishan.Electric field calculation and design optimization in running state for 750 kV suspended-type surge arrester[J].Journal of Nanjing University of Aeronautics&Astronautics,2005,37(6):801-806.
[6]江讯,王仲奕,金强.棒形悬式复合绝缘子电场计算和优化[J].高压电器,2005,41(5):340-342.JIANG Xun,WANG Zhongyi,JIN Qiang.Calculation and optimization of electric field and voltage distribution along long-rod composite insulator[J].High Voltage Apparatus,2005,41(5):340-342.
[7]许安,杨翔,贾文彬.220 kV带纯空气间隙线路避雷器的电场分析[J].电瓷避雷器,2016(2):100-105.XU An,YANG Xiang,JIA Wenbin.The electric field analysis of 220 kV line arrester with pure air gap[J].Insulations and Surge Arrester,2016(2):100-105.
[8]江讯,王仲奕.330 k V带均压环的棒形悬式复合绝缘子电场有限元分析[J].高压电器,2004,40(3):215-217.JIANG Xun,WANG Zhongyi.Analysis of the electric field of 330 kV composite insulator with grading rings[J].High Voltage Apparatus,2004,40(3):215-217.
[9]项阳,郭洁,赵珊,等.500 kV六氟化硫绝缘罐式金属氧化物避雷器电场分析[J].电瓷避雷器,2009(3):35-39.XIANG Yang,GUO Jie,ZHAO Shan,et al.Electric field analysis of 500 kV tank type metal oxide surge arresters[J].Insulations and Surge Arrester,2009(3):35-39.
[10]王永强,胡芳芳,谢军,等.GIS盆式绝缘子气息缺陷下电场变化规律仿真研究[J].绝缘材料,2016,49(1):40-45.WANG Yongqiang,HU Fangfang,XIE Jun,et al.Simulation study on electric field change rule of GIS disc insulator with air gap defects[J].Insulation Materials,2016,49(1):40-45.
[11]CHRISTODOULUO C A,SPANIAS C A,KONTARGYRIV T,et al.Study of electric field around a metal oxide surge arrester:Measurement and simulation[J].High Voltage Engineering,2013,39(8):2014-2021.
[12]陈智勇,蒋学军,李婧.复合绝缘子伞群损坏对绝缘子电场分布的影响研究[J].电瓷避雷器,2013(5):44.CHEN Zhiyong,JIANG Xuejun,LI Jing.Studies of the effect of the shed damage of composite insulator on electric field distribution along insulator[J].Insulations and Surge Arrester,2013(5):44.
[13]路彦峰.氧化锌避雷器电位分布数值计算研究[D].西安:西安电子科技大学,2007.LU Yanfeng.Research on numerical calculation of the potential distribution of ZnO surge arrester[D].Xi'an:Xi'an University of Electronic Science and Technology,2007.
[14]陈忠,黄贵均.应用二维轴对称场有限元法的电站型MOA电位分布计算及均压设计[J].电瓷避雷器,2016(2):155-161.CHEN Zhong,HUANG Guijun.Potential distribution calculation and uniform design for 220 kV station type ZnO surge arrester based on 2D axial asymmetry finite element method[J].Insulations and Surge Arrester,2016,(2):155-161.
[15]韩昊,何相奎.500 kV悬挂式带串联间隙线路避雷器电场分布研究[J].科技创新导报,2012,15(1):4-7.HAN Hao,HE Xiangkui.Electric field distribution of 500 kVsuspension type line arrester with pure air clearance in series[J].Science and Technology Consulting Herald,2012,15(1):4-7.
[16]韩社教,戴栋,马西奎,等.应用有限元法计算氧化锌避雷器电位分布[J].中国电机工程学报,2001,21(12):105-108.HAN Shejiao,DAI Dong,MA Xikui,et al.Calculation of potential distribution for zinc-oxide surge arrester by finite element method[J].Proceedings of the Chinese for Electrical Engineering,2001,21(12):105-108.
[17]郭洁,何计谋,李晓峰.750 kV金属氧化物避雷器电位分布研究[J].中国电力,2006,39(1):15-17.GUO Jie,HE Jimou,LI Xiaofeng.Study on the potential distribution of 750 kV metal oxide surge arrester[J].Electric Power,2006,39(1):15-17.
[18]安翠翠,刘航,王琼,等.特高压直流母线MOA的电位与电场分析[J].高压电器2009,45(5):9-11.AN Cuicui,LIU Hang,WANG Qiong,et al.Calculation of electric potential and field distribution of UHVDC bus bar MOA[J].High Voltage Apparatus,2009,45(5):9-11.
[19]岳亚丽,江少成,张源斌.800 kV MOA的电位分布数值分析和测量[J].高压电器,2009,45(4):63-64.YUE Yali,JIANG Shaocheng,ZHANG Yuanbin.Numerical analysis and measuring for the potential distribution of800 kV MOA[J].High Voltage Apparatus,2009,45(4):63-64.
[20]陈德兴,张永记,晋文杰,等.紧凑型运行方式下220 kV金属氧化物避雷器电位与电场分布的计算[J].高压电器,2011,47(2):39-42.CHEN Dexing,ZHANG Yongji,JIN Wenjie,et al.Calculation of electric potential and field distribution of 220 kV MOAunder compact operation mode[J].High Voltage Apparatus,2011,47(2):39-42.
[21]赵宇,马文玲,窦小晶,等.1 000 kV瓷外套MOA电位分布计算与试验[J].高电压技术,2008,34(1):11-15.ZHAO Yu,MA Wenlling,DOU Xiaojing,et al.Calculation and measurement of potential distribution of 1 000 kV metal oxide arrester[J].HighVoltageEngineering,2008,34(1):11-15.