220 kV电缆GIS终端局部放电联合检测技术应用  

Application of Combined Partial Discharge Detection Technology for 220 kV Cable GIS Terminal

作　　者：赵晨昊 陈云飞 胡泉伟[1] 李跃[1] 李雯 ZHAO Chenhao;CHEN Yunfei;HU Quanwei;LI Yue;LI Wen(Cable Company of State Grid Tianjin Electric Power Company,Tianjin 300171,China)

机构地区：[1]国网天津市电力公司电缆分公司,天津300171

出　　处：《山东电力技术》2022年第5期56-62,75,共8页Shandong Electric Power

基　　金：国家电网有限公司科技项目“电力电缆潜伏性隐患检测防护与产品施工质量评价技术研究”(SGTJDK00PJJS1800007)。

摘　　要：有效地检出局部放电是保证电缆GIS终端质量控制和实现状态检测的重要手段。在介绍特高频法和高频法应用于电缆GIS终端局部放电检测优缺点及联合检测的优势基础上,针对某变电站内220 kV电缆GIS终端的异常放电信号联合检测案例,通过分析特高频检测数据、高频检测数据及定位结果,结合解体后发现的放电痕迹,探究放电的原因。最终确定电缆GIS终端止动套安装不到位是造成此次设备缺陷的主要原因。该案例为今后类似故障的处理提供参考。Effective detection of partial discharge is an important means to realize cable GIS terminal quality control and state detection.The advantages and disadvantages of ultra high frequency(UHF)method and high frequency(HF)method applied to partial discharge detection of cable GIS terminal and the advantages of UHF-HF combined detection were introduced.The abnormal discharge signal of 220 kV cable GIS terminal in a substation was detected by analyzing UHF detection data,HF detection data and positioning results,combined with the discharge traces found after disassembly,the causes of discharge were explored.Finally,it was determined that the main reason for the equipment defect was that the cable GIS terminal stop sleeve was not installed in place.This case has accumulated experience for the handling of similar faults in the future.

关 键 词：电缆GIS终端 局部放电 特高频 高频 联合检测 

分 类 号：TM855[电气工程—高电压与绝缘技术]