不同磁场强度下无极性直流微型断路器灭弧研究  

Research on arc extinguishing of non-polar DC miniature circuit breaker with different magnetic field intensities

作　　者：牟明川 张博[1] 郭晓雪 赵虎 周达 Mou Mingchuan;Zhang Bo;Guo Xiaoxue;Zhao Hu;Zhou Da(School of Electronic and Information Engineering,Xi'an Polytechnic University,Xi'an 710600,China;Zhejiang Zero One Intelligent Electrical Appliance Research Institute Co.,Ltd.,Wenzhou 325000,China)

机构地区：[1]西安工程大学电子信息学院,西安710600 [2]浙江零壹智能电器研究院有限公司,温州325000

出　　处：《国外电子测量技术》2021年第11期53-57,共5页Foreign Electronic Measurement Technology

基　　金：西安市青年托举计划(095920201324)项目资助。

摘　　要：直流微型断路器是低压配电系统最为关键的保护和控制设备,其分断灭弧快慢对系统及本身有重要的影响。在目前有极性磁吹灭弧研究基础上进行优化,提出了无极性磁吹灭弧方案,解决了微型断路器正反向使用的难题,并研究了32 A电流等级下不同磁场强度对无极性直流微型断路器灭弧的影响研究。结果表明,无极性磁吹灭弧对断路器正反向使用效果良好,在4种不同磁场强度下,2片120 mT磁场强度时灭弧时间最短,提高了微型断路器的使用效率,延长了直流断路器的电寿命。The DC miniature circuit breaker is the most critical protection and control equipment for low-voltage power distribution systems.Its speed of breaking and extinguishing arcs has an important impact on the system and itself.On the basis of the current research on polar magnetic blow-out,the author proposes the non-polar magnetic blow-out scheme,which solves the problem of the positive and reverse use of miniature circuit breakers.Additionally,the author studies the influence of different magnetic field intensities on arc extinguishing of non-polar DC miniature circuit breakers at the current level of 32 A.The results show that the non-polar magnetic blow-off has a good effect on the positive and reverse use of circuit breakers.Under four different magnetic field intensities,the arc-extinguishing time is the shortest at the intensity of two 120 mT magnetic fields,which improves the use efficiency of miniature circuit breakers and prolongs the electrical life of DC circuit breakers.

关 键 词：磁场强度 无极性 直流微型断路器 电寿命 

分 类 号：TM561[电气工程—电器]