摘要
切除空载变压器是真空断路器操作过电压问题最严重的情况。文中在真空断路器开断交流电流真空间隙介质恢复的物理过程的基础上,建立了灭弧室介质强度恢复的数学模型,采用Saber软件的MAST语言编程,对真空断路 器开断空载变压器的一个完整过程进行了仿真计算。根 据计算结果,分析了暂态过程、过电压的特点以及变压器、真空断路器参数对过电压的影响,并与平均恢复速度计算结果进行了比较,表明本文建立的灭弧室计算模型更接近于实测恢复特性。
Interrupting no load transformer is the most serious case in vacuum circuit breaker switching overvoltage.Chamber medium strength math model is established in this paper according to vacuum circuit breaker interrpting characteristic based on the physics process of interrupting ac current. Vacuum circuit breaker interropting no load transformer is simulated with MAST language of Sabe software. Then, transient process,overvoltage characteristic and transformer,vacuum circuit breaker parameter are analyzed with result. Comparison with average speed resume shows chamber math model is closer to tesbing resume characteristic.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2002年第8期99-103,共5页
Proceedings of the CSEE
