GIS局部放电带电测试原理研究及现场缺陷分析

Study on Live Test Principle of GIS Partial Discharge and Analysis of Site Defects

局部放电测量目前是检测GIS方便而有效的测试方法之一。分析比较了常用的GIS局部放电带电测试的原理及方法,并介绍了几起典型的现场缺陷及解体情况。可见对GIS进行周期性的局部放电带电测试并在GIS交接耐压时进行局放带电测试是行之有效的。一般情况下,使用超高频方法进行测量,当发现问题时,使用超声方法进行验证与定位可以掌握与查出GIS内部的缺陷情况。

artial discharge measurement is one of the effective and easy to test GIS. Common principles and methods for testing partial discharge are compared, and several typical site defects and dismantling status are introduced. It is effective to carry out the periodic partial discharge live test on the GIS and partial discharge live test in case of GIS pressure withstand. In general, ultrahigh fre- quency method is used for measurement, when problem is found, defects status inside GIS can be mas- tered and found through verify and location by ultrasonic method.