氧化锌避雷器阻性电流误差分析  

Analysis of the Resistance Current Error of Zinc-oxide Arrester

作　　者：张晨晨[1] 贾凤鸣[1] 华超[1] 

机构地区：[1]安徽省电力公司超高压公司,安徽合肥230061

出　　处：《安徽电气工程职业技术学院学报》2012年第3期43-45,共3页Journal of Anhui Electrical Engineering Professional Technique College

摘　　要：氧化锌避雷器老化劣变的重要标志是运行电压下阻性电流增大,但对其阻性电流进行测量时存在多种干扰,给判断避雷器是否老化、受潮带来困难。文章对某变电站的氧化锌避雷器阻性电流测量结果出现负值这一特殊情况进行了详细分析,找出了阻性电流测量值为负值的主要原因。The important mark of the aging and degradation of zinc-oxide arrester is the increase of resis- tive current under running voltage, which leads to interferences of the measurement of the resistive cur- rent and therefore causes difficulty in judging whether it is an aging and dampened arrester. This paper makes a detailed analysis of a special case in which the measurement of the resistive current of zinc-oxide arrester turns out to be negative in a transformer substation, and finds out the main reason why the resistive current is negative.

关 键 词：氧化锌避雷器 阻性电流 干扰 

分 类 号：TM862.1[电气工程—高电压与绝缘技术]