锦屏一级水电站监控系统远方紧急启停机组检修排水泵可行性研究  

Feasibility Study on Remote Emergency Start and Stop of Generator Maintenance Drainage Pump of Jinping I Hydropower Station Monitoring System

作　　者：刘江红 杨自聪 梅沈锋 梁成刚 杨泽鹏 LIU Jianghong;YANG Zicong;MEI Shenfeng;LIANG Chenggang;YANG Zepeng(Yalong River Hydropower Development Co., LTD, Chengdu, Sichuan, 610051)

机构地区：[1]雅砻江流域水电开发有限公司,四川成都610051

出　　处：《四川水力发电》2020年第3期130-132,136,共4页Sichuan Hydropower

摘　　要：通过对锦屏一级水电站监控远方直接启停排水泵可行性研究及实践可知,监控远方启泵时,只需先现地手动开启长轴深井泵润滑水,延时2 m在电站监控系统发令合10 kV开关即可。监控远方停泵时,直接在电站监控系统发令分10 kV开关。实现远方直接启停机组检修排水泵,其重要意义体现在:机组检修期进行尾水管排水时,可以提前远方启动机组检修排水泵,将检修集水井水位抽至停泵水位;在机组检修排水过程中,可根据集水井水位上升及下降速度灵活调整机组检修排水泵运行台数。为提高尾水管排水效率,减少排水时间提供理论基础及实践支撑。由于锦屏一级水电站厂房渗漏排水系统与机组检修排水系统现场设备及控制系统完全一样,当厂房渗漏排水及机组检修排水控制系统异常时,可以远方直接启动排水泵进行排水。该研究对提高机组尾水管排水效率及厂房渗漏排水系统安全可靠运行具有重要参考意义。According to the feasibility study and practice of monitoring the remote start and stop of drainage pump in Jinping I Hydropower Station,when monitoring the remote start of pump,it is only need to manually start the long shaft deep well pump lubricating water in situ,and send an order to close the 10kV switch in the monitoring system of the power station after a delay of 2m;when monitoring the remote stop of pump,it can directly sent order to open the 10kV switch in monitoring system of the power station.To realize the remote start and stop of the generator maintenance drainage pump directly,its important significance is reflected in:when the tailrace tube drainage is carried out during the generator maintenance period,the generator maintenance drainage pump can be started remotely in advance to pump the maintenance collector well water level to the pump stop water level;during the generator maintenance drainage process,the operation number of generator maintenance drainage pumps can be flexibly adjusted according to the rise and fall speed of the collector well water level,which provides theoretical basis and practical support for improving drainage efficiency of tailrace tube and reducing drainage time.Because the leakage drainage system of Jinping I hydropower station is exactly the same as the equipment and control system of the generator maintenance drainage system on site,when the leakage drainage system of the power house and the generator maintenance drainage control system are abnormal,the drainage pump can be directly started remotely.This study has important reference significance for improving the drainage efficiency of tailrace tube of the generator,as well as safe and reliable operation of leakage drainage system of powerhouse.

关 键 词：锦屏一级水电站 机组检修排水 泵控阀 远方启泵 远方停泵 

分 类 号：TV741[水利工程—水利水电工程] X924.3[环境科学与工程—安全科学]