400 V备自投异常动作的原因分析及改进措施  

Analysis and Treatment of Abnormal Action of 400 V Automatic Switchover Backup Device

作　　者：马殿勋 周静位 吉元涛 李家汉 梁刚 赵思意 MA Dianxun;ZHOU Jingwei;JI Yuantao;LI Jiahan;LIANG Gang;ZHAO Siyi(Baihetan Hydropower Plant, China Yangtze Power Co., Ltd., Ningnan 615400, China)

机构地区：[1]中国长江电力股份有限公司白鹤滩水力发电厂,四川宁南615400

出　　处：《水电与新能源》2021年第6期48-52,共5页Hydropower and New Energy

摘　　要：备自投装置目前广泛应用在电网中,是提高供电可靠性的一种重要手段。针对某大型水电站一起400 V备自投异常动作的案例,结合备自投动作逻辑进行原因分析,探讨改进措施,排除了系统故障隐患,增强了备自投动作的可靠与准确性,提高了电网的安全运行质量。The automatic switchover backup device is widely used in power grids nowadays,which is an important measure to improve the power supply reliability.An abnormal action case observed in the 400 V automatic switchover backup device in a large-scale hydropower station is discussed.Considering the action logic of the automatic switchover backup device,possible reasons of the fault are analyzed and some improvement measures are proposed.The treatment successfully eliminates the problem of the system and improves the reliability and accuracy of the automatic switchover action,which enhances the safe operation quality of the power grid.

关 键 词：备自投装置 电压变送器 动作逻辑 失压 

分 类 号：TM727[电气工程—电力系统及自动化]