断路器本体三相不一致保护回路改进  

Improvement of Three Phase Inconsistent Protection Circuit of Circuit Breaker

作　　者：郭敏 王文丽 GUO Min;WANG Wenli(Nanning Power Supply Bureau,Guangxi Power Grid Company,Nanning 530031,China)

机构地区：[1]广西电网公司南宁供电局,广西南宁530031

出　　处：《电工技术》2022年第24期254-256,共3页Electric Engineering

摘　　要：对三相不一致保护回路进行优化是防止断路器本体三相不一致保护误动的主要途径之一。结合实际整改工作,分析了各类型本体三相不一致回路改进方案,主要针对本体三相不一致保护与就地分闸共用出口继电器的回路进行了分析,其中增加三相不一致出口继电器的方案在完善了回路的同时也能可靠防止三相不一致出口继电器误动。Optimizing the three-phase inconsistency protection loop is one of the main ways to prevent the three-phase inconsistency protection misoperation of the circuit breaker body.Combined with the actual rectification work,the improvement scheme of the three-phase inconsistent circuit of each type of ontology was analyzed.The circuit of the three-phase inconsistency protection of the body and the local opening shared outlet relay is analyzed,and the scheme of adding the three-phase inconsistent outlet relay can reliably prevent the misoperation of the three-phase inconsistent outlet relay while improving the circuit.

关 键 词：断路器 三相不一致保护改进 共用出口 

分 类 号：TM588[电气工程—电器]