混合式断路器无弧分断的影响因素研究  

Study on Influencing Factor of Arcless Breaking in Hybrid Circuit Breaker

作　　者：邵方静[1] 纽春萍[1] 吴益飞[1] 胡杨[1] 杨倬[1] 陈喆歆 

机构地区：[1]西安交通大学电气工程学院,陕西西安710049

出　　处：《低压电器》2013年第24期1-4,23,共5页Low Voltage Apparatus

摘　　要：通过对一种混合式断路器无弧分断电路结构的仿真分析,研究了故障电流上升率、反向预充电电容电压值和反向放电支路晶闸管导通时刻对过零时刻的影响趋势。仿真与试验结果表明,电流上升率越慢,反向预充电电容电压值越大,均导致过零时间段增长,更容易满足无弧分断要求;晶闸管导通延时时间过长或过短,均会导致过零时刻无法满足无弧分断的时序要求。A hybrid circuit breaker was simulated and tested to analyse the influence factors of acrless breaking,which are fault current rate of rise,reversed charging capacitor voltage and the turn-on time of SCR in the commutation circuit. The result shows that the low current rate of rise and the high reversed charging capacitor voltage benefit arcless breaking. Moreover,longer or shorter turn-on time of SCR makes arcless breaking failure.

关 键 词：混合式断路器 无弧分断 电流转移 影响因素 

分 类 号：TM561[电气工程—电器]