220 kV电流互感器局部放电缺陷不停电检测与分析  

On-line Detection and Analysis of Partial-discharge FAULT for 220 kV Current Transformer

作　　者：葛猛[1] 李鹏[1] 陶安培 于全福[1] 

机构地区：[1]吉林供电公司,吉林吉林132001

出　　处：《高压电器》2009年第6期153-155,160,共4页High Voltage Apparatus

摘　　要：介绍了一例220 kV电流互感器电容屏间局部放电故障处理过程,采用红外成像技术与油色谱分析技术结合对故障的成因进行分析:绝缘材质不良、干燥时间不达标、干燥窑使用超容量、绝缘包裹工艺不良,出现较多局部褶皱等。成功避免了一起威胁220 kV设备事故的发生,阐述了不停电检测技术对电力系统运行安全的重要性。The detection and process of a 220 kV current transformer partial-discharge fault between capacitor shields are described. The causes of the fault were analyzed with infrared imaging technology and oil chromatographic analysis. The result indicated that this partial-discharge fault is due to unqualified insulation material, shorter drying time, and poor insulator packing technique, etc. Therefore, an accident of the 220 kV current transformer was avoided. In addition, the importance of on-line detection technology on power system security is discussed.

关 键 词：电流互感器 局部放电 三比值法 

分 类 号：TM452[电气工程—电器]