接地线对微机继电保护设备的抗扰度影响试验分析

为了提高电子设备电路系统工作的稳定性，同时泄放由静电感应在机箱上积累的电荷，避免电荷积累形成的高压导致设备内部放电而造成干扰，为设备和操作人员提供安全保障，接地是一项极其必要的措施。但在干扰情况下，接地线的接地效果及其对设备的影响到底怎样，还并未做过详细试验。针对与此，对微机继电保护设备采用不同接地线时所能承受的干扰电压进行试验，并总结分析，提出设计及工程人员实际工作中应注意的问题。

Test and Research on Immunity Ability of Relay Protection Equipment of Grounding Lead

To keep the stabilization of electronic equipment and release the electric charge to avoid discharge inside the equipment,and ensure the safety of workers and operators,grounding is essential and crucial.However the detailed report on different grounding cables in terms of different length or area hasn't been researched as yet.This paper presentes the limit disturbance voltage of relay protection equipment when it suffers interference,givies the sum-up and putting forward some questions for the designers and engineers in practical application.