[PDF]_±800kV_输电线路直流复合绝缘子均压环结构研究.pdf

±800kV 输电线路直流复合绝缘子
均压环结构研究∗
1 1 2 1 2 2
司马文霞,武坤,李立浧,杨庆,黎小林,罗兵
(,重庆 400030;
,广东省广州市 510000)
摘要:基于有限元方法,建立了输电线路直流复合绝缘子三维电场计算模型。研究了影响复合绝缘子表面电位和电场分布的
因素;为控制复合绝缘子表面电场,研究了均压环的半径,管半径和抬高距离对绝缘子电场分布的影响规律,从控制电场角
度得出了合理的均压环结构参数。针对特高压复合绝缘子的电场分布特点,提出一种应用于±800kV 直流复合绝缘子的大小
双均压环的结构参数,结果表明双均压环可以更好的改善绝缘子端部电场分布。研究结果为±800kV 直流特高压线路的外绝
缘设计提供参考。
关键词:复合绝缘子;均压环;电场;特高压;3D 模型;结构
中图分类号:TM854 文献标志码:A 文章编号:1003-6520(2007)11-00-0

Optimization of Corona Ring Design for ±800kV UHV DC Transmission Lines
SIMA Wen-xia1, WU Kun1, LI Li-cheng2, YANG Qing1, LI Xiao-lin2, LUO Bing2
( 1. The Key Laboratory of High Voltage Engineering and Electrical New Technology of the Ministry of Education,
Chongqing University, Chongqing 400030, China;
2. The Technology Center of China Southern Power Grid, Guangzhou 510000,Guangdong Province, China )
ABSTRACT: Based on the finite element method, a three-dimensional electric field model-considering the effect of transmission
lines, tower and ground-is founded to calculate the potential distribution and electrical field distribution along posite insulator
on ±800kV UHV DC transmission lines. The effect of the corona ring for improving the electric field distribution on posite
insulator is studied by changing the parameters of the corona ring, and the proper parameters of the ring semi-diameter,
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