±800 kV输电线路带电作业人员体表电场仿真分析
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摘要
对输电线路带电作业人员体表电场进行研究,保障带电作业人员的人身安全,是目前电力行业亟需解决的问题。为此利用Ansoft仿真软件,建立±800 kV输电线路杆塔、导线、人体以及V型绝缘子串的仿真计算模型,并采用有限元法计算带电作业人员从横担处和塔身侧面进入等电位作业区域时,6个典型带电作业位置对人体表面电场的影响。仿真计算结果表明:作业人员从横担进入等电位作业时,畸变场强为正常运行时的5.3倍;作业人员从塔身侧面进入等电位作业时,畸变场强为正常运行时的1.23倍;同时等电位作业下,作业人员张开双臂后手臂端畸变场强最大,最大值可达到382.1 kV/m,为正常运行时的4.27倍。因此,带电作业时,作业人员应从塔身侧面进入等电位作业,且作业过程中应减小动作弧度。
It is a problem desperately needs to be solved in current power industry to study body surface electric field of live operating personnel on ±800 kV power transmission lines and ensure their personal safety. Therefore, Ansoft simulation software was used to establish a simulation model for the tower, the conductor, the human body and the V-typed insulator string, meanwhile the finite element method was used to calculate effect of six typical live working locations on body surface when live operating personnel entering into equipotential working areas from the crossarm and the side of the tower. The simulation result indicates that when live operating personnel enter into the equipotential areas for working from the crossarm, distorted electric field intensity is 5.3 times that in normal operation state, and 1.23 times that in normal operation state when live operating personnel enter into the equipotential areas from the side of tower. Meanwhile, distorted electric field intensity is the largest at ends of arms of the personnel as he opens his arms, of which the maximum value is 382.1 kV/m that is 4.27 times that in normal operation state. As a result, it is suggested the live operating personnel should enter into the equipotential areas from the side of tower and reduce action radian during live working.
It is a problem desperately needs to be solved in current power industry to study body surface electric field of live operating personnel on ±800 kV power transmission lines and ensure their personal safety. Therefore, Ansoft simulation software was used to establish a simulation model for the tower, the conductor, the human body and the V-typed insulator string, meanwhile the finite element method was used to calculate effect of six typical live working locations on body surface when live operating personnel entering into equipotential working areas from the crossarm and the side of the tower. The simulation result indicates that when live operating personnel enter into the equipotential areas for working from the crossarm, distorted electric field intensity is 5.3 times that in normal operation state, and 1.23 times that in normal operation state when live operating personnel enter into the equipotential areas from the side of tower. Meanwhile, distorted electric field intensity is the largest at ends of arms of the personnel as he opens his arms, of which the maximum value is 382.1 kV/m that is 4.27 times that in normal operation state. As a result, it is suggested the live operating personnel should enter into the equipotential areas from the side of tower and reduce action radian during live working.
引文
[1] 胡毅,刘凯,刘庭,等.超/特高压交直流输电线路带电作业[J].高电压技术,2012,38(8):1809-1820.HU Yi,LIU Kai,LIU Ting,et al.Live working technology on EHV/UHV transmission lines[J].High Voltage Engineering,2012,38(8):1809-1820.
[2] 胡毅,刘凯,胡建勋,等.±800 kV特高压直流线路带电作业安全防护用具的分析[J].高电压技术,2010,36(10):2357-2361.HU Yi,LIU Kai,HU Jianxun,et al.Analysis on safety protective equipment for live working on ±800 kV UHVDC transmission line[J].High Voltage Engineering,2010,36(10):2357-2361.
[3] 石凯,徐文洋,雷冬云,等.±800 kV特高压直流输电线路带电作业方式[J].电瓷避雷器,2016(2):6-11.SHI Kai ,XU Wenyang ,LEI Dongyun ,et al.Live working ways for ±800 kV UHVDC transmission line[J].Insulators & Surge Arresters,2016(2):6-11.
[4] 潘俊文,罗日成,潘茜雯.±800kV输电线路带电作业电场仿真分析[J].高压电器,2017(11):197-202.PAN Junwen ,LUO Richeng ,PAN Qianwen .Simulation analysis of electric field on live working of ±800 kV transmission line[J].High Voltage Apparatus,2017(11):197-202.
[5] 张文亮,于永清,李光范,等.特高压直流技术研究[J].中国电机工程学报,2007,27(22):1-7.ZHANG Wenliang,YU Yongqing,LI Guangfan,et al.Researches on UHVDC technology[J].Proceedings of the CSEE,2007,27(22):1-7.
[6] 范建斌,廖蔚明,李庆峰,等 ±800 kV直流输电线路带电作业方式的试验研究[J].电力建设,2009,30(7):7-12.FAN Jianbin,LIAO Weiming,LI Qingfeng,et al.Experimental research on live-line operation for±800 kV DC transmission line[J].Electric Power Construction,2009,30(7):7-12.
[7] 刘凯,吴田,刘庭,等.±800 kV特高压直流输电线路的电位转移电流特性[J].高电压技术,2013,39(3):568-576.LIU Kai,WU Tian,LIU Ting,et al.Characteristics of potential transfer current of±800 kV UHVDC transmission line[J].High Voltage Engineering,2013,39(3):568-576.
[8] 肖勇,樊灵孟.云广±800 kV特高压交直流输电线路带电作业分析[J].高电压技术,2010,36(9):2206-2211.XIAO Yong,FAN Lingmeng.Analysis of live working on Yun-Guang ±800 kV UHVDC transmission line[J].High Voltage Engineering,2010,36(9):2206-2211.
[9] 胡毅,刘凯,刘庭,等.带电作业技术研究与标准制定[J].高电压技术,2012,38(11):3015-3024.HU Yi,LIU Kai,LIU Ting,et al.Live working technology research and standards formulation[J].High Voltage Engineering,2012,38(11):3015-3024.
[10] 吴东,潘俊文,邹明.±800 kV特高压直流输电线路带电作业人体体表电场分布特性[J].电力科学与技术学报,2018,121(2):159-166.WU Dong,PAN Junwen,ZOU Ming.Research of electric field distribution characteristics for body surface of live working on ±800 kV DC transmission lines[J].Journal of Electric Power Science and Technology,2018,121(2):159-166.
[11] 张亚迪,车彬,邱中华,等.基于人员体表场强的±800 kV特高压直流线路带电作业进入等电位的路径研究[J].高电压技术,2019,45(4):1131-1137.ZHANG Yadi,CHE Bin,QIU Zhonghua,et al.Study on the path of equipotential entry for live work of ±800 kV UHVDC line based on the field strength of personnel's body surface[J].High Voltage Engineering,2019,45(4):1131-1137.
[12] 陶留海,唐盼,刘凯,等.哈郑±800 kV直流接地极架空线路带电作业安全距离研究[J].高电压技术,2018(44):976-981.TAO Liuhai,TANG Pan,LIU Kai,et al.Study on safety distance for live operation of Ha-Zheng ±800 kV DC grounding overhead line[J].High Voltage Engineering,2018(44):976-981.
[13] 刘夏清,李稳,姜赤龙,等.±1 100 kV特高压直流输电线路带电作业电位转移特性[J].高电压技术,2017(43):16-20.LIU Xiaqing,LI Wen,JIANG Chilong,et al.±1 100 kV UHVDC live line operation potential transfer characteristics[J].High Voltage Engineering,2017(43):16-20.
[14] 卢铁兵,冯晗,王琦,等.特高压直流输电线下合成电场分布的影响因素[J].高电压技术,2009,35(9):2066-2070.LU Tiebing,FENG Han,WANG Qi,et al.Analysis of influence factors of the total electric field distribution beneath UHVDC power lines[J].High Voltage Engineering,2009,35(9):2066-2070.
[15] 袁海燕,傅正财.基于有限元法的±800 kV特高压直流输电线路离子流场计算[J].电工技术学报,2010,25(2):139-146.YUAN Haiyan,FU Zhengcai.Corona ionized field analysis of ±800 kV HVDC transmission lines[J].Transactions of China Electrotechnical Society,2010,25(2):139-146.
[16] 祝贺,刘程.山火对±800 kV输电线路下电场影响的仿真分析[J].南方电网技术,2017,11(6):15-21.ZHU He,LIU Cheng.Simulation analysis on influence of forest fire on electric field under ±800 kV transmission line[J].Southern Power System Technology,2017,11(6):15-21.
[17] 马爱清,陈吉,徐东捷.特高压直流输电线路合成电场强度对人体影响分析[J].广东电力,2016,29(1):97-101.MA Aiqing ,CHEN Ji,XU Dongjie .Analysis on influence on human body by compound electric field strength of ultra-high voltage DC power transmission lines[J].Guangdong Electric Power,2016,29(1):97-101.
[18] 方覃绍阳,向小民,李征航.高压直流输电线路标称电场强度计算模型[J].广东电力,2016,29(11):128-132.FANG-QIN Shaoyang,XIANG Xiaomin,LI Zhenghang.Calculation model for nominal electric field of high voltage DC transmission lines[J].Guangdong Electric Power,2016,29(11):128-132.
[2] 胡毅,刘凯,胡建勋,等.±800 kV特高压直流线路带电作业安全防护用具的分析[J].高电压技术,2010,36(10):2357-2361.HU Yi,LIU Kai,HU Jianxun,et al.Analysis on safety protective equipment for live working on ±800 kV UHVDC transmission line[J].High Voltage Engineering,2010,36(10):2357-2361.
[3] 石凯,徐文洋,雷冬云,等.±800 kV特高压直流输电线路带电作业方式[J].电瓷避雷器,2016(2):6-11.SHI Kai ,XU Wenyang ,LEI Dongyun ,et al.Live working ways for ±800 kV UHVDC transmission line[J].Insulators & Surge Arresters,2016(2):6-11.
[4] 潘俊文,罗日成,潘茜雯.±800kV输电线路带电作业电场仿真分析[J].高压电器,2017(11):197-202.PAN Junwen ,LUO Richeng ,PAN Qianwen .Simulation analysis of electric field on live working of ±800 kV transmission line[J].High Voltage Apparatus,2017(11):197-202.
[5] 张文亮,于永清,李光范,等.特高压直流技术研究[J].中国电机工程学报,2007,27(22):1-7.ZHANG Wenliang,YU Yongqing,LI Guangfan,et al.Researches on UHVDC technology[J].Proceedings of the CSEE,2007,27(22):1-7.
[6] 范建斌,廖蔚明,李庆峰,等 ±800 kV直流输电线路带电作业方式的试验研究[J].电力建设,2009,30(7):7-12.FAN Jianbin,LIAO Weiming,LI Qingfeng,et al.Experimental research on live-line operation for±800 kV DC transmission line[J].Electric Power Construction,2009,30(7):7-12.
[7] 刘凯,吴田,刘庭,等.±800 kV特高压直流输电线路的电位转移电流特性[J].高电压技术,2013,39(3):568-576.LIU Kai,WU Tian,LIU Ting,et al.Characteristics of potential transfer current of±800 kV UHVDC transmission line[J].High Voltage Engineering,2013,39(3):568-576.
[8] 肖勇,樊灵孟.云广±800 kV特高压交直流输电线路带电作业分析[J].高电压技术,2010,36(9):2206-2211.XIAO Yong,FAN Lingmeng.Analysis of live working on Yun-Guang ±800 kV UHVDC transmission line[J].High Voltage Engineering,2010,36(9):2206-2211.
[9] 胡毅,刘凯,刘庭,等.带电作业技术研究与标准制定[J].高电压技术,2012,38(11):3015-3024.HU Yi,LIU Kai,LIU Ting,et al.Live working technology research and standards formulation[J].High Voltage Engineering,2012,38(11):3015-3024.
[10] 吴东,潘俊文,邹明.±800 kV特高压直流输电线路带电作业人体体表电场分布特性[J].电力科学与技术学报,2018,121(2):159-166.WU Dong,PAN Junwen,ZOU Ming.Research of electric field distribution characteristics for body surface of live working on ±800 kV DC transmission lines[J].Journal of Electric Power Science and Technology,2018,121(2):159-166.
[11] 张亚迪,车彬,邱中华,等.基于人员体表场强的±800 kV特高压直流线路带电作业进入等电位的路径研究[J].高电压技术,2019,45(4):1131-1137.ZHANG Yadi,CHE Bin,QIU Zhonghua,et al.Study on the path of equipotential entry for live work of ±800 kV UHVDC line based on the field strength of personnel's body surface[J].High Voltage Engineering,2019,45(4):1131-1137.
[12] 陶留海,唐盼,刘凯,等.哈郑±800 kV直流接地极架空线路带电作业安全距离研究[J].高电压技术,2018(44):976-981.TAO Liuhai,TANG Pan,LIU Kai,et al.Study on safety distance for live operation of Ha-Zheng ±800 kV DC grounding overhead line[J].High Voltage Engineering,2018(44):976-981.
[13] 刘夏清,李稳,姜赤龙,等.±1 100 kV特高压直流输电线路带电作业电位转移特性[J].高电压技术,2017(43):16-20.LIU Xiaqing,LI Wen,JIANG Chilong,et al.±1 100 kV UHVDC live line operation potential transfer characteristics[J].High Voltage Engineering,2017(43):16-20.
[14] 卢铁兵,冯晗,王琦,等.特高压直流输电线下合成电场分布的影响因素[J].高电压技术,2009,35(9):2066-2070.LU Tiebing,FENG Han,WANG Qi,et al.Analysis of influence factors of the total electric field distribution beneath UHVDC power lines[J].High Voltage Engineering,2009,35(9):2066-2070.
[15] 袁海燕,傅正财.基于有限元法的±800 kV特高压直流输电线路离子流场计算[J].电工技术学报,2010,25(2):139-146.YUAN Haiyan,FU Zhengcai.Corona ionized field analysis of ±800 kV HVDC transmission lines[J].Transactions of China Electrotechnical Society,2010,25(2):139-146.
[16] 祝贺,刘程.山火对±800 kV输电线路下电场影响的仿真分析[J].南方电网技术,2017,11(6):15-21.ZHU He,LIU Cheng.Simulation analysis on influence of forest fire on electric field under ±800 kV transmission line[J].Southern Power System Technology,2017,11(6):15-21.
[17] 马爱清,陈吉,徐东捷.特高压直流输电线路合成电场强度对人体影响分析[J].广东电力,2016,29(1):97-101.MA Aiqing ,CHEN Ji,XU Dongjie .Analysis on influence on human body by compound electric field strength of ultra-high voltage DC power transmission lines[J].Guangdong Electric Power,2016,29(1):97-101.
[18] 方覃绍阳,向小民,李征航.高压直流输电线路标称电场强度计算模型[J].广东电力,2016,29(11):128-132.FANG-QIN Shaoyang,XIANG Xiaomin,LI Zhenghang.Calculation model for nominal electric field of high voltage DC transmission lines[J].Guangdong Electric Power,2016,29(11):128-132.