多种带电检测方法在GIS局部放电诊断中的综合应用与研究  

Comprehensive Application and Research of Multi Live Detection Methods in Partial Discharge Diagnosis for GIS

作　　者：芦竹茂 刘庆[2] 王天正 俞华 刘雷[3] 

机构地区：[1]国网山西省电力公司电力科学研究院,太原030001 [2]国网山西省电力公司检修公司,太原030001 [3]国网山西省电力公司,太原030001

出　　处：《高压电器》2017年第10期222-226,237,共6页High Voltage Apparatus

摘　　要：GIS在电力系统中已广泛应用,但运行中产生的局部放电严重影响设备的绝缘性能,因而需要加强对GIS中局部放电检测的研究。文中通过对一起220 kV GIS局部放电检测案例分析,综合运用特高频、超声波局部放电检测及SF6气体分解物测试等多种带电检测方法,准确判断了局部放电类型并对故障位置进行了定位,通过解体检查证明了带电检测判断结果的正确性,确定了等电位弹簧失效是产生局部放电的原因。最后提出应重视对GIS局部放电在线监测信息的甄别,综合判断设备运行情况。GIS is widely used seriously affects the insulation in electric power system, property of equipment, however, the problem of partial discharge during operation thus need to strengthen the study of partial discharge detec- tion in GIS. A fault of partial discharge in the 220 kV GIS equipment is analyzed. Combined with several kinds of live detection methods such as ultra-high frequency and acoustic emission partial discharge detection and SF6 gas decomposition test, the partial discharge in the GIS is judged and positioned, while the judgment result of live detection has been proved accurately by disassembling check. The partial discharge fault is caused by failure of equipotential spring. In addition, the GIS partial discharge on-line monitoring information should pay more atten- tion and apply to comprehensive iudzment of equipment operation.

关 键 词：GIS 带电检测 局部放电 特高频 超声波 SF6气体分解物. 

分 类 号：TM595[电气工程—电器]