变电站直流电源系统用小型断路器解决保护误动的问题

Miniature Circuit Breaker Applied for Solving Protection Misoperation in DC Power System of Transformer Substation

在新建或改造电站直流电源系统设备工程中应用小型直流断路器时,不但要考虑负载的容量、电压允许范围等常见参数,还要重点考虑直流断路器是否有选择性保护,特别是在负载并联了大容量滤波电容器时造成断路器误动作的问题及解决方案。

When small DC circuit breaker was applied in newly-built or modified transformer substation DC power system equipment engineering,not only load capacity,voltage permissible range of common parameters should be considered,but also DC circuit breaker selective protection should be considered as a key,especially the problems and solutions of breaker misoperation caused by load paralleled with large capacity filter capacitor.