220kV同塔双回输电线路杆塔电场分布特性研究  

Study on the electric field distribution characteristics of a 220kV double-circuit transmission line on the same tower

作　　者：李山 张媛 杨定乾 胡嗣宇 侯天宇 LI Shan;ZHANG Yuan;YANG Dingqian;HU Siyu;HOU Tianyu(State Grid Xinjiang Electric Power Research Institute,Urumqi 830013;China University of Geosciences(Beijing),Beijing 100083)

机构地区：[1]国网新疆电力有限公司电力科学研究院,乌鲁木齐830013 [2]中国地质大学(北京),北京100083

出　　处：《电气技术》2024年第10期1-7,29,共8页Electrical Engineering

摘　　要：随着我国高压交流输电技术的快速发展,高压交流电网已然成为我国电网的主要网架,高压输电线路工频电场不可避免地会对近地面的人类活动产生一定影响,因此有必要对输电线路产生的电磁场进行计算。本文以220kV同塔双回输电线路为研究对象,采用COMSOL有限元仿真软件,模拟同塔双回线鼓形排列条件下杆塔及导线周边的电场,研究分析相序配置、杆塔结构、导线粗细与分裂间距选择,以及导线对地高度等因素对电场分布的影响。结果显示,逆相序排布可显著降低地面电场强度,而导线粗细对电场分布的影响较小,合理的分裂间距有助于控制电场强度,输电线路对地高度是影响地面电场的最关键因素。以上研究结果可为220kV输电线路电场优化提供参考,有助于提升系统的环境兼容性和安全性。With the rapid development of high voltage AC transmission technology in China,high voltage AC grids have become the main framework of the national grid.The power frequency electric field of high voltage transmission lines inevitably affects human activities near the ground,making it necessary to calculate the electromagnetic fields generated by transmission lines.This paper takes a 220kV double-circuit transmission line on the same tower as the research object.Using COMSOL finite element simulation software,it simulates the electric field around the tower and conductors under the drum-shaped arrangement of the double-circuit line on the same tower.The study analyzes the effects of phase sequence configuration,tower structure,conductor thickness and splitting distance selection,and conductor height above the ground on the electric field distribution.The results show that reverse phase sequence arrangement can significantly reduce the ground electric field intensity,while conductor thickness has a smaller impact.Reasonable splitting distance helps control the electric field intensity,and the height of the transmission line above the ground is the most critical factor affecting the ground electric field.These findings provide reference for optimizing the electric field of 220kV transmission lines,facilitating the enhancement of environmental compatibility and safety of the system.

关 键 词：输电线路 电场仿真 有限元 输电杆塔 

分 类 号：TM75[电气工程—电力系统及自动化]