由直流电源故障引起进水口闸门误动作的原因分析及改进  

Cause Analysis and Improvement of Intake Gate Misoperation Caused by DC Power Failure

作　　者：唐世戡 TANG Shikan(Wuling Power Generation Centralized Control Center,Changsha 410004,China)

机构地区：[1]五凌电力发电集控中心,湖南长沙410004

出　　处：《电工技术》2020年第20期81-82,92,共3页Electric Engineering

摘　　要：介绍托口水电站两起因直流电源故障引起机组进水口闸门误动作事件,分析了交流窜入直流系统和直流系统接地对进水口闸门控制回路的影响,并针对性提出了改进措施,以保证电站的安全运行,为同行业电站类似问题提供参考。By introducing two incidents of malfunctioning of the inlet gate of the unit caused by the failure of the DC power supply in Tuokou Hydropower Station,the influence of the AC fleeing into the DC system and the grounding of the DC system on the inlet gate control circuit was analyzed.The improvement measures were put forward to ensure the safe operation of the power station,which provided reference for similar problems of power stations in the same industry.

关 键 词：进水口闸门 交流窜入 直流系统 误动作 

分 类 号：TM622[电气工程—电力系统及自动化]