摘要
避雷器运行中阻性电流检测是判断其状态的主要手段。针对现有阻性电流检测方法的不足,提出了一种运行电压下避雷器相对阻性电流检测与评价方法,测量时仅需获取三相避雷器全电流,不需采集PT参考电压信号,不受电压信号中存在谐波的影响,能稳定准确反映避雷器阻性电流变化。现场试验证实了该方法测试阻性电流的可靠和准确。
Resistive current detection is an important method to judge its state for MOA(Metal Oxide Arrester)in operation.In this paper,based on the existing methods of resistance current detection,a method is presented,which evaluates arrester status by detecting the relative resistive component of MOA leakage current.This method only needs to obtain the full leakage current of the three-phase arrester,and does not need to collect the reference voltage signal from PT,and it is not affected by the harmonics in the voltage signal,which can reflect the resistance current change of MOAstably and accurately.The field test has verified that the proposed method is accurate and reliable.
作者
李艳鹏
张来福
刘永鑫
杨冬冬
LI Yanpeng;ZHANG Laifu;LIU Yongxin;YANG Dongdong(State Grid Shanxi Electric Power Research Institute,Taiyuan 030001,China)
出处
《电瓷避雷器》
CAS
北大核心
2019年第5期150-154,共5页
Insulators and Surge Arresters
关键词
避雷器
相对阻性电流
全泄漏电流
参考电压
MOA
relative resistive current
full leakage current
reference voltage
作者简介
李艳鹏(1982—),男,硕士,高级工程师,从事电气试验和带电检测方面的研究工作。
