摘要
空气直流断路器在城市轨道交通直流牵引供电系统中起着分断电路的作用。随着断路器的开断容量的提高,电动斥力对供电系统开断性能的影响越发明显。基于麦克斯韦电磁学理论,分析了电动斥力的产生原理,计算了分断电流过程触头间的电动斥力。通过建立动力学仿真模型,分析了断路器空载和短路开断时的分闸特性,并进行了断路器开断特性的试验研究。
The air DC circuit breaker in urban rail transit DC traction power supply system is mainly used for breaking circuit.With the increase of opening and breaking volume,the impact of electro-dynamic repulsion force on the opening and breaking performance of power supply system is growing evident.Based on Maxwell electromagnetism theory,the emergence principle of electro-dynamic repulsion forces is analyzed,and the electro-dynamic repulsion force between contact point during current breaking process is calculated.Through building dynamics simulation model,the separation characteristics demonstrated during breaker empty load and short circuit opening and breaking are analyzed,and opening and breaking characteristics of the breaker are tested and studied.
作者
齐阳
刘禹彤
吉星
佟俊达
周沫
高凤喜
QI Yang;LIU Yutong;JI Xing;TONG Junda;ZHOU Mo;GAO Fengxi(Economy Technical Research Institute of Liaoning Electric Co.,Ltd.,110015,Shenyang,China)
出处
《城市轨道交通研究》
北大核心
2021年第1期74-78,共5页
Urban Mass Transit
关键词
城市轨道交通
直流牵引供电系统
空气断路器
电动斥力
开断特性
urban rail transit
DC traction power supply system
air DCCB(direct current circuit breaker)
electro-dynamic repulsion force
opening and breaking characteristics
