提高断路器本体三相不一致保护可靠性的方法  

Method for Improving Reliability of Three-phase Inconsistent Protection of Circuit Breaker Body

作　　者：朱琳 谭佑文 何开正 龙德勇 ZHU Lin;TAN You-wen;HE Kai-zheng;LONG De-yong(Yunnan Huadian Zhenxiong Power Generation Co.,Ltd.,Zhaotong 657204,China)

机构地区：[1]云南华电镇雄发电有限公司,云南昭通657204

出　　处：《云南水力发电》2022年第S01期50-52,共3页Yunnan Water Power

摘　　要：在220kV及以上电压等级电网中,断路器本体三相不一致保护能否正确动作关系到一次设备和电网的安全运行。对断路器本体三相不一致保护原理进行了阐述,针对目前现场使用的出口继电器存在的问题提出了解决办法,并通过校验验证了此方法的可行性,提高了本体三相不一致保护的可靠性,为电网的安全稳定运行提供了有力的保障。In 220 kV and above voltage level power grid,correct operation of three-phase inconsistent protection of circuit breaker body is related to the safe operation of primary equipment and power grid.This paper describes the principle of three-phase inconsistent protection of circuit breaker body.In view of the problems existing in the current field use of outlet relay,the solution is put forward.It also verifies the feasibility of this method,improves the reliability of three-phase inconsistent protection of the main body,and provides a strong guarantee for the safe and stable operation of the power grid.

关 键 词：三相不一致 出口继电器 动作功率 可靠性 

分 类 号：TM774[电气工程—电力系统及自动化]