中文摘要：

论述了基于真空灭弧室和SF6灭弧室串联的混合断路器开断能力提高的原理,分析了混合断路器两灭弧室的介质恢复过程。结合混合断路器开断能力提高的机理提出了混合断路器对其操动控制机构的要求,设计了一种基于真空灭弧室与SF6灭弧室串联的光控模块式混合断路器实验模型。实验模型能满足分析混合断路器中真空灭弧室与SF6灭弧室在不同时刻协同动作开断容量增益特性的要求,其协同动作时间分散性在微秒级。实验对比了SF6断路器与基于相同SF6灭弧室串联真空灭弧室的混合断路器短路电流开断能力,证明在不增加SF6气体使用量的前提下,混合断路器具有比SF6断路器更加优越的开断能力。

英文摘要：

The principle of breaking capacity improvement of hybrid circuit breaker with serial vacuum interrupter and SF6 interrupter is discussed and the dielectric recovery process of two interrupters is analyzed. Based on the improvement of breaking capacity, the requirements of hybrid circuit breaker for its control mechanism are proposed. The experimental model of hybrid circuit breaker based on optical control modules is designed, which meets the research requirement for the breaking capacity gain characteristic of coordinating operation at different moments between vacuum interrupter and SF6 interrupter, and the time dispersion is microsecond level. Experimental results show that, if the usage of SF6 gas is same, the breaking capacity of hybrid circuit breaker is higher than that of SF6 circuit breaker.