平行和交叉跨越直流模拟试验线段三维电场的一种计算方法  

A calculation method for three-dimensional electric fields of parallel and crossed DC simulation test line sections

作　　者：杨勇[1] 谢莉 YANG Yong;XIE Li(He’nan University of Technology,Zhengzhou 450001;China Electric Power Research Institute,Beijing 100192)

机构地区：[1]河南工业大学,郑州450001 [2]中国电力科学研究院有限公司,北京100192

出　　处：《电气技术》2021年第1期14-18,共5页Electrical Engineering

基　　金：国家电网公司科技项目(GYB17201800203)。

摘　　要：直流模拟试验线段常用来试验研究平行和交叉跨越高压直流输电线路的电场以验证理论研究结果的有效性,因此需要研究一定线段高度下线段长度对其电场的影响,为试验线段的几何结构参数设计提供依据。本文提出一种线段电荷所产生电位和电场的解析表达式,将其应用到优化模拟电荷法中求解平行和交叉跨越直流模拟试验线段的三维电场。通过计算和分析,得到如下结论:本文提出的方法能用来计算平行和交叉跨越直流模拟试验线段的电场;所得到的电场分布规律能为将来进一步预测平行和交叉跨越直流模拟试验线段发生电晕放电时所产生的离子流电场提供技术支撑。In order to verify the validity of theoretical research results of the electric fields around parallel and crossed HVDC transmission lines,DC simulation test line sections are usually used to perform the test experiment.Then,when the height of test line sections has been set,the effect of the length of test line sections on the electric fields needs to be studied to provide the reference for the geometric structure parameter design of test line sections.The analytical expressions of potential and electric field produced by the line section charge are proposed in this paper,and they are applied in the optimized analog charge method to resolve three-dimensional electric fields around parallel and crossed DC simulation test line sections.Through calculation and analysis,the following results are obtained.The method proposed in this paper can be used to calculate the electric fields around parallel and crossed HVDC transmission lines.The distribution law of electric field obtained in this paper can provide the technical support for further predicting the ion current electric field generated by the corona discharge occurring around the conductors of parallel and crossed HVDC transmission lines.

关 键 词：试验线段 电场 线段电荷 三维 

分 类 号：TM75[电气工程—电力系统及自动化]