换流站滤波器场750kV避雷器均压环对直流泄漏电流影响
Influence of 750 kV Arrester Grading Rings on DC Leakage Current in Converter Station Filter Area
黄江涛 1武文成 1王丹1
作者信息
- 1. 甘肃送变电工程有限公司,甘肃 兰州 730050;国网甘肃省电力公司,甘肃 兰州 730050
- 折叠
摘要
针对祁连换流站滤波器场750 kV氧化锌避雷器第一节0.75U1mA下测量泄漏电流时,在现场停电检修条件的限制下,顶部均压环不具备拆卸条件,导致受均压环影响,空间离散电流较大,从而影响试验结果的问题,提出利用屏蔽罩消除均压环影响的方法,总结了几种常见的避雷器泄漏电流试验影响因素.
Abstract
A measurement of leakage current under 0.75U1mA on the upper section of the 750 kV zinc oxide arresters in the filter area of an actual converter station was carried out under a power outage condition,and the grading rings of the ar-resters were not allowed to be removed.This led to grading ring-induced large spatial discrete current affecting the meas-urement result.In view of this,the method of eliminating the influence of grading ring by using shielding covers was pro-posed and adopted,and several common factors affecting leakage current measurement of arresters were summarized.
关键词
氧化锌避雷器/泄漏电流/均压环/屏蔽罩Key words
zinc oxide lightning arrester/leakage current/grading ring/shielding cover引用本文复制引用
出版年
2024
NETL
NSTL
万方数据