水轮发电机组顶盖排水控制系统设计  

Head Cover Drainage System Design for Hydrogenerator Set

作　　者：闫浩 马莹 YAN Hao;MA Ying(Dongfang Electric Autocontrol Engineering Co.,Ltd.,618000,Deyang,Sichuan,China)

机构地区：[1]东方电气自动控制工程有限公司,四川德阳618000

出　　处：《东方电气评论》2024年第6期37-39,共3页Dongfang Electric Review

摘　　要：水轮机顶盖在立式水轮发电机组运行或停机中都会出现积水情况,顶盖积水超过安全水位会导致事故危害机组安全运行,因此当水位超过一定限度时需使用排水泵及时排出顶盖积水。顶盖排水系统中使用浮子开关监测顶盖积水位,将水位开关信号送入排水泵控制PLC,PLC通过控制排水泵驱动电路进而控制排水泵的启停,使积水位始终保持在安全阈值内,实现自动化控制保证机组安全稳定运行。本文从电气和控制角度介绍了三排水泵组合顶盖排水系统的控制设计方法,该方法提高了顶盖排水系统的整体效能和可靠性,实现了系统优化。During the operation or stop of a vertical hydrogenerator unit,water accumulation may occur on the head cover of the turbine.If the water accumulation on the head cover exceeds the safe water level,it can cause accidents and endanger the safe operation of the unit.Therefore,when the water level exceeds a certain limit,a drainage pump should be used to timely discharge the water accumulation on the head cover.In the head cover drainage system,a float switch is used to monitor the accumulated water level on the head cover,and the water level switch signal is sent to the drainage pump control PLC.The PLC controls the start and stop of the drainage pump by controlling the drive circuit of the drainage pump,ensuring that the accumulated water level is always within the safe threshold and achieving automatic control to ensure the safe and stable operation of the unit.This article introduces the control design method of the combined head cover drainage system with three drainage pumps from the perspectives of electrical and control,this method improves the overall efficiency and reliability of the head cover drainage system,achieving system optimization.

关 键 词：水轮发电机组 顶盖排水 轮换逻辑 控制设计 

分 类 号：TM312.1[电气工程—电机]