电力系统及其自动化学报2011，Vol.23Issue(2)：127-130,4.
改进型地铁用直流断路器
Improved DC Breaker for Metro System
周宏宇 1罗隆福 1许加柱 1董书大1
作者信息
- 1. 湖南大学电气与信息工程学院,长沙,410082
- 折叠
摘要
Abstract
DC breaker is the crucial apparatus in metro system for removal of faults. Compulsive arc extinguishing is the main method used in DC breakers in our metro system, so the breaking current is very high, which can prevalently burn down the DC breakers. On the basis of mathematic model of electric arc, this paper established a simulation system in Matlab. And then, the simulation result proves that the high current directly leads to the burn of traditional DC breaker. In order to overcome the defect of traditional breaker, an improved DC breaker is proposed in this paper. Meanwhile, a new electric structure of breaker with its new simulation model is built in this paper. Finally, the simulation shows the ideal charicteristic of arc extinction and the low burn probability of contactor of new type DC breaker, and this design will find many application in the future.关键词
直流断路器/大电流/小电弧/地铁/新模型Key words
DC(direct current)breaker/ high current/ low arc/ metro system/ new model分类
信息技术与安全科学引用本文复制引用
周宏宇,罗隆福,许加柱,董书大..改进型地铁用直流断路器[J].电力系统及其自动化学报,2011,23(2):127-130,4.
