低压备自投装置选择性保护的探讨  

Discussion on Selective Protection of RAC in Low Voltage Distribution System

作　　者：刘平 谭本刚 郑文涛 

机构地区：[1]三板溪水电厂,湖南长沙410004

出　　处：《低压电器》2010年第9期49-50,55,共3页Low Voltage Apparatus

摘　　要：针对400 V备自投开关切换至短路母线上时往往由于备自投装置的选择性问题导致进线开关跳闸进而使得低压系统全部失电,提出了保护整定配合和区域选择性联锁的解决方案,有效避免了因低压备自投误动导致的扩大性跳闸。Aiming at that the selective protection of reserve automatic closure（RAC） in a 400 V system led to input line circuit breakers tripping to cause the power failure of the whole low voltage system when the RAC was switched to short-circuit bus,the solution of protection adjusting and zone selective interlocking（ZSI） was proposed to avoid override trip effectively by the RAC error.

关 键 词：配电系统 备用电源自投 选择性保护 区域选择性联锁 

分 类 号：TM564.8[电气工程—电器]