基于超高频信号检测GIS局放模式识别  

Identification of PD Patterns in Gas Insulated Switchgear(GIS) Based on UHF Signals

作　　者：李信[1] 李成榕[1] 丁立健[1] 丁燕生[1] 何鹏 蒋建玲[1] 杨静[1] 

机构地区：[1]华北电力大学电力系,北京102206 [2]北京四方同创保护设备有限公司,北京100085

出　　处：《高电压技术》2003年第11期26-30,共5页High Voltage Engineering

摘　　要：利用一种新型的便携式 GIS局放超高频 (UHF)信号传感器在实验室中对 7种 GIS故障模型进行了局放测量。试验研究结果表明 ,从检波脉冲随相位分布特征可识别 GIS中的局放类型。总结了高压导体上的金属尖刺、高压导体及接地体之间的接触不良、盆式绝缘子上金属颗粒等 7种常见波形特征 ,建立了一个基于时域检波波形的 GIS故障局放模式识别库 ,为在Utilizing new-type of portable GIS partial discharge ultra-high frequency signal sensor,the partial discharge measurement has been carried out with 7 kinds of fault models to simulate discharges in GIS. The experimental results demonstrate that the type of GIS partial discharge can be identified by the distribution characteristic of the demodulation pulse with the phase. In this paper, the demodulation signal characteristics has been summarized corresponding to 7 kinds of common partial-discharge models,such as metal sharps on high-voltage conductors, floating electrode on high-voltage conductors or grounding bodies, free metallic particles on insulators, fixed metallic particles or single particle on the insulators, etc. The library of GIS partial discharge models has been built to provide references to the GIS partial discharge measurements.

关 键 词：全封闭组合电器 GIS 局部放电 模式识别 超高频信号 检测 绝缘缺陷 

分 类 号：TM835.4[电气工程—高电压与绝缘技术]