换流站滤波器场750 kV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

作　　者：黄江涛 武文成 王丹 HUANG Jiangtao;WU Wencheng;WANG Dan(Gansu Power Transmission Engineering Co.,Ltd.,Lanzhou 730050,China;State Grid Gansu Electric Power Company,Lanzhou 730050,China)

机构地区：[1]甘肃送变电工程有限公司,甘肃兰州730050 [2]国网甘肃省电力公司,甘肃兰州730050

出　　处：《电工技术》2024年第11期193-195,共3页Electric Engineering

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。A measurement of leakage current under 0.75 U 1mA 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 arresters were not allowed to be removed.This led to grading ring-induced large spatial discrete current affecting the measurement result.In view of this,the method of eliminating the influence of grading ring by using shielding covers was proposed 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 

分 类 号：TM561[电气工程—电器]