沙角A电厂保安系统改造及运行分析

Reconstruction and operation analysis of emergency system in Shajiao A Power Station

分析了沙角A电厂4号、5号机组380V保安系统的运行情况,针对该保安系统在多次事故中未能起到应急备用的作用,提出了改造方案,对改造后的保安系统的事故处理方法、电压恢复等进行了分析,并总结运行经验,对保安系统的运行和维护提出建议。

This paper analyzes the operation of the 380 V emergency system for Units 4 ＆ 5 in Shajiao A Power Station. A reconstruction plan is presented in view of the failures of the emergency system in multiple accidents, The emergency handling method and voltage recovery, etc. of the reconstructed system are analyzed. The operation experience is summarized, and suggestions on the operation and maintenance of the emergency system are offered as well.