一起500kV HGIS设备套管气室特高频局放信号异常分析  

Analysis on UHF Partial Discharge Signal Anomaly in Casing Gas Chamber of 500 kV HGIS Equipment

作　　者：刘建月 张志东[2] 薛赵琪 王欣伟 LIU Jianyue;ZHANG Zhidong;XUE Zhaoqi;WANG Xinwei(Skill Training Center of Shanxi Electrical Power Company(Shanxi Electric Power Vocational and Technical College),Taiyuan Shanxi 030021,China;Ultra-high voltage Substation Company,Shanxi Electrical Power Company,Taiyuan Shanxi 030006,China;Linfen Power Supply Company,Shanxi Electric Power Company,Linfen Shanxi 041099,China;Electric Power Research Institute,Shanxi Electric Power Company,Taiyuan Shanxi 030032,China)

机构地区：[1]国网山西省电力公司技能培训中心(山西电力职业技术学院),山西太原030021 [2]国网山西省电力公司超高压变电公司,山西太原030006 [3]国网山西省电力公司临汾供电公司,山西临汾041099 [4]国网山西省电力公司电力科学研究院,山西太原030032

出　　处：《湖北电力》2023年第6期41-45,共5页Hubei Electric Power

基　　金：国网山西省电力公司科技项目(项目编号:52053023000H)。

摘　　要：在对某500kV变电站HGIS设备进行局部放电检测时,发现5011断路器间隔A相存在异常特高频信号,利用声电联合定位到局放信号来自该相套管气室附近,放电类型属于强电晕放电或悬浮放电。最后通过局放异常检测和分析,发现气室微水超标是导致异常的原因,并提出相应措施预防和杜绝微水含量超标问题。During partial discharge detection of HGIS equipment in a 500 kV substation,abnormal ultra-high frequency signal was found in phase A of 5011 circuit breaker interval.Combined acoustic and electrical positioning is used to find that the local discharge signal comes from the vicinity of the phase casing gas chamber,and the discharge type belongs to strong corona discharge or suspension discharge.Finally,the anomaly detection and analysis of local discharge are conducted to find that the excessive micro-water in the gas chamber is the cause of the anomaly,and the corresponding measures are put forward to prevent and eliminate the excessive micro-water.

关 键 词：局部放电 特高频 超声波 微水超标 放电 500KV变电站 HGIS 断路器 

分 类 号：TM855[电气工程—高电压与绝缘技术]