电力变压器局部放电检测方法探讨

Discussion of PD Detecting Methods in Power Transformers

电力变压器局部放电是引发电力事故的主要原因之一,国内外对局部放电理论进行了深入的研究。综述了目前电力变压器检测局部放电的基本方法,包括电测法和非电测法;介绍了国内外研究现状和相关的应用情况;根据在线监测、有效定位、抗干扰能力强和实用性高4个方面,对上述变压器局部放电测量方法进行比较,以探讨未来局部放电检测方法的发展方向,结论为超声波法具有较大潜力。

Partial discharge（PD） of power transformer is one of the major causes leading to power fault,and the theory of PD has been widely studied in order to avoid such accidents.This paper discusses the basic methods in PD detecting which divides into electric ones and non-electric ones,describes some relating researches and worldwide applications in this filed,and compares the mentioned methods according to four aspects of monitoring online,positioning effectively,great anti-jamming ability and big practicablity in order to forecast the development of PD detecting.It is concluded that the ultrasonic detecting method has greater potential.