发电机局部放电在线监测中的抗干扰技术

摘要

大型发电机局部放电在线监测的关键技术之一是如何掏 现场的各种电磁干扰。本文对现场干扰的特性进行了分析，并提出了相应的抑制方法。最后 介绍了已成功用于发电机局部放电在线监测仪中的抗干扰系统。对现场实测数据的处理结果 表明这些方法是有效的。%One of the key techniques for on-line monitoring of partial discharge(PD)in lar g e generators is to suppress various noises in site.In this paper,noises arising in site were analyzed systematically and corresponding noise suppressing techniq ues were presented.In order to demonstrate the efficiency of the techniques pres ented,several measurements performed in site were shown.