跨高铁架空输电线路空间电场扰动分析
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摘要
高压线路的空间电场环境变化会带来严重后果:一方面,影响自身稳定运行,降低供电的可靠性;另一方面,带来生态影响,并损伤邻近结构。穿越架空输电线路的高铁速度快、体积大,为研究跨高铁输电线路空间电场扰动的影响,本文采用有限元分析的方法,建立线路-高铁的二维电场模型并仿真分析。结果可见,高铁穿过架空输电线路会使线路下方的工频电场产生畸变,线路正下方畸变程度最大,越靠近高铁畸变越明显;高铁通过线路下方并引起畸变时,线路的对地距离是一个重要的影响因素。因此,跨高铁对架空输电线路的空间电场扰动较大,需引起关注和采取必要措施。
Changes in the space electric field environment of high-voltage lines can have serious consequences. On the one hand, it affects its own stable operation and reduces the reliability of power supply; on the other hand, it brings ecological impact and damages adjacent structures. The high-speed rail passing through the overhead transmission line is fast and bulky. In order to study the influence of the space electric field disturbance on the high-speed railway transmission line, this paper uses the finite element analysis method to establish the two-dimensional electric field model of the line-high-speed rail and simulates the analysis. As a result, it can be seen that the high-speed rail passing through the overhead transmission line will cause distortion of the power frequency electric field under the line, and the distortion degree is the largest under the line, and the closer to the high-iron distortion, the more obvious; when the high-speed rail passes under the line and causes distortion, the line-to-ground distance is one. Important influencing factors. Therefore, the space electric field disturbance to the overhead transmission line across the high-speed rail is large, and it is necessary to attract attention and take necessary measures.
Changes in the space electric field environment of high-voltage lines can have serious consequences. On the one hand, it affects its own stable operation and reduces the reliability of power supply; on the other hand, it brings ecological impact and damages adjacent structures. The high-speed rail passing through the overhead transmission line is fast and bulky. In order to study the influence of the space electric field disturbance on the high-speed railway transmission line, this paper uses the finite element analysis method to establish the two-dimensional electric field model of the line-high-speed rail and simulates the analysis. As a result, it can be seen that the high-speed rail passing through the overhead transmission line will cause distortion of the power frequency electric field under the line, and the distortion degree is the largest under the line, and the closer to the high-iron distortion, the more obvious; when the high-speed rail passes under the line and causes distortion, the line-to-ground distance is one. Important influencing factors. Therefore, the space electric field disturbance to the overhead transmission line across the high-speed rail is large, and it is necessary to attract attention and take necessary measures.
引文
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[13]孙帅,卢铁兵,崔翔.交直流导线平行架设时混合电场特性分析[J].电工技术学报,2017,32(8):138-143.
[14]王擘.论基于有限元的超高压输电线路电场的数值分析与测量[J].科技创新与应用,2018(27):58-59,61.
[15]陶瑞祥,王泽忠.基于有限元的电场区域分解法的广义极小残量迭代算法[J].电工技术学报,2018,33(2):225-231.
[2]张格红,于进,魏水平,等.高压交流输电线路电场生态效应研究[J].广东输电与变电技术,2011,13(1):6-9.
[3]彭湃.基于有限元和模拟电荷法的输电线路工频电磁场的数值计算与研究[D].广州:广东工业大学,2016.
[4]王群,李永卿,陈静,等.110kV高压输电线路电磁场分析及评价[J].北京工业大学学报,2005,31(3):308-312.
[5]黄韬,吕建红,彭继文,等.基于矩量法的输电线路工频电磁场实测与计算分析[J].高压电器,2013,49(2):30-36.
[6]朱艳秋,宋晓东,赵志勇.220kV高压输电线路工频电磁场影响因素研究[J].电力科技与环保,2011,27(1):5-8.
[7]封滟彦.超高压输电线路电磁场的仿真研究[D].重庆:重庆大学, 2004.
[8]黄俊璞,林韩,宋福根,等.不同地形对高压架空线周围电场分布影响的仿真分析[J].电工电气,2015(12):6-9.
[9]侯宇.复杂地形下高压交流输电线路的工频电场仿真研究[D].南京:南京师范大学, 2017.
[10]吴小雁,薛毓强,黄云程.考虑复杂地势的交流超高压输电线路电场[J].电气技术,2015,16(9):7-10,15.
[11]苏超,刘振声,李黎,等.220kV架空输电线路下工频电场的电磁感应仿真分析[J].广东电力,2018,31(1):106-112.
[12]宋福根,林韩,兰生.特高压输电线路交叉跨越区域工频电场分布计算[J].电气技术, 2016, 17(1):6-10.
[13]孙帅,卢铁兵,崔翔.交直流导线平行架设时混合电场特性分析[J].电工技术学报,2017,32(8):138-143.
[14]王擘.论基于有限元的超高压输电线路电场的数值分析与测量[J].科技创新与应用,2018(27):58-59,61.
[15]陶瑞祥,王泽忠.基于有限元的电场区域分解法的广义极小残量迭代算法[J].电工技术学报,2018,33(2):225-231.