一种提高10 kV备自投可靠性的方法  

A Reliability Improvement Measure for the 10 kV Automatic Switchover Backup Power System

作　　者：童志祥 骆佳勇 李光耀[1] 郑伟[1] TONG Zhixiang;LUO Jiayong;LI Guangyao;ZHENG Wei(Xiluodu Hydropower Plant,China Yangtze Power Co.,Ltd.,Yongshan 657300,Chin)

机构地区：[1]中国长江电力股份有限公司溪洛渡水力发电厂,云南永善657300

出　　处：《水电与新能源》2018年第8期30-32,51,共4页Hydropower and New Energy

摘　　要：在10 kV系统中,提高备自投可靠性有着重要的意义。经研究,提出一种提高10 kV备自投可靠性的方法,可在现场维护过程中,不会因运行方式变化致使母线电压衰减缓慢造成备自投动作失败;通过一种新的备自投就绪条件判断方法,优化逻辑程序,在拥有第三备应急电源的备自投系统中,采用新的逻辑时间配合方式可有效避免非同期合闸。A reliability improvement measure is proposed for the 10 kV automatic switchover backup power system. With the improvement,possible failures of the switchover action of the backup power system due to the change of the operation modes during the in-situ maintenance could be avoided. The logic process is optimized with a new method to determine the readiness of the automatic switchover action. With this new logic time coordination method,the non-synchronous closing could be avoided in the automatic switchover backup power system with a third emergency power source.

关 键 词：备自投装置 运行方式 可靠性 

分 类 号：TM762[电气工程—电力系统及自动化]