局部放电在线监测中的电磁干扰及抑制方法

Electromagnetic Interference in On-line Monitoring Partial Discharge and Its Sup-

对电力设备的局部放电进行在线监测已是一种发展趋势,而有效地抑制现场的各种电磁干扰是成功进行局放在线监测的关键。分析了变压器在线监测中存在的各种电磁干扰,并介绍了抑制方法。

It is a trend to monitor partial discharge in power device by on-line method. Efficiently to suppress electromagnetic interference is the key to moni-tor partial discharge successfully. In this paper, various electromagnetic interfer-ences under on-line monitoring partial discharge in transformers are analysed mainly and some suppressing methods are introduced.