摘要
GIS局部放电检测是GIS绝缘状态监测的一种科学有效的方法。笔者构建了GIS实验模型以及基于超高频法的局部放电在线检测系统,对GIS中典型的几种局部放电特征进行了研究,采用基于相位的分析模式详细分析了不同放电类型在不同电压条件下的放电特征,并结合常规局部放电测试仪,对UHF信号的放电量进行估计,为进一步进行放电类型的智能模式识别及研究超高频信号与放电量关系提供了试验依据,以提高UHF局部放电检测的工程实用性。
GIS partial discharge detection is a scientific and effective way for insulation condition monitoring.A GIS model and the detection system based on UHF method has been set up.Several typical GIS partial discharge is studied and using power phase analysis a detailed analysis of characteristics under different voltage is made;Combined with conventional partial discharge detection method,the partial discharge quantity estimation of UHF signal is also made.All of these lay a foundation for the study of partial discharge intelligent recognition and the relationship between UHF signal and partial discharge quantity to improve the engineering utility of UHF partial discharge detection.
出处
《高压电器》
CAS
CSCD
北大核心
2012年第4期7-12,共6页
High Voltage Apparatus
基金
浙江省科技计划项目(2010C31098)
河北省应用基础研究计划重点基础研究项目(10962126D)~~
关键词
GIS
局部放电
超高频
相位分析
放电量
gas insulated switchgear
partial discharge
UHF
power phase analysis
discharge quantity
