开关柜局部放电带电检测技术的应用分析

Research on Live Detection Technology for Partial Discharge of Switch Cabinet

介绍了10~35 kV开关柜局放带电检测常用的地电波法和超声波法,分析了这2种方法的优缺点和应用的局限性。利用地电波法和超声波法对开关柜局放进行现场带电检测,发现了多起开关柜异常故障,取得了一定的现场应用效果。同时指出,对检测结果进行数字信号分析和建立相应数据库是今后工作开展的方向。

The paper introduces geoelectricity method and supersonic method commonly used for live detection on partial discharge of 10~35 kV switch cabinets,and it analyzes merits and demerits of the two methods and the limitation of application.By use of geoelectricity method and supersonic method for field live detection on partial discharge of switch cabinets,many faults of switch cabinets are detected,and the field application effect has been achieved.The paper indicates the development orientation of digital detection result analysis by digital signal and database establishment in the future.