电力变压器局部放电带电检测及定位技术的思考

Consideration of Live Detection and Location Technology for Partial Discharge in Power Transformers

电力系统运行中出现的局部放电现象会使电力设备发生运行故障,因此对电力变压器局部放电带电检测及定位技术进行了研究。通过分析高频电流法、超高频法、超声波法、光学法和油中气体溶解分析法等局部放电带电检测技术,阐述超声波带电检测定位技术和特高频带电检测定位技术,并对比分析了这些检测和定位技术,旨在探究其现实应用。

Partial Discharge(PD) occurs during the operation of power system,which results in the operation failure of power equipment. In order to solve this problem,this paper studies the live detection and location technology of partial discharge in power transformer. Firstly,it analyses the live detection technology of partial discharge such as high frequency current method,ultra-high frequency method,ultrasonic method,optical method,gas dissolution analysis method in oil,and then elaborates the ultrasonic positioning and ultra-high frequency positioning. Two kinds of live detection and positioning technology,and finally these detection and positioning technology are compared and analyzed,so as to explore its practical application.