摘要
现代舰船电力系统通常采用分段母线,母线段与段之间一般配置具有双向通流和保护能力的母联断路器,用于保护母线,同时兼做负载支路开关的后备保护。该文给出一种基于强迫换流原理的双向直流真空断路器技术方案,采用晶闸管构成桥式换流回路,实现双向分断,重点对换流过程进行分析,通过选择对向晶闸管导通时刻,调控真空开关过零过程的电流、电压波形,降低电流过零速率,构建近似零电压介质恢复环境,增强分断可靠性。仿真结果表明,该方案及控制策略可行、有效。
Modern ship power systems usually use the segmented bus, and the bus sections are generally connected by circuit breaker with bidirectional current flow and protection capabilities to protect the busbars, which also serve as backup protection for load branch switches. This paper presented a bi-direction DC vacuum circuit breaker based on the forced commutation principle. The thyristor was used to form a bridge commutation circuit, and regulate the vacuum circuit breaker current and voltage shape during the zero-crossing period. The current decline rate was reduced, a zero-voltage recovery process was formed, and the interruption reliability was enhanced. Theoretical analysis and simulation results show that the proposed scheme and the control strategy are feasible and effective.
作者
刘路辉
薛杰
纪锋
蒋文韬
LIU Luhui;XUE Jie;JI Feng;JIANG Wentao(National Key Laboratory of Science and Technology on Vessel Integrated Power System(Naval University of Engineering),Wuhan 430033,Hubei Province,China)
出处
《中国电机工程学报》
EI
CSCD
北大核心
2022年第21期8034-8040,共7页
Proceedings of the CSEE
基金
国家自然科学基金(青年科学基金项目)(51607184)。
关键词
直流
真空断路器
换流
双向
晶闸管
DC
vacuum circuit breaker
commutation
bi-direction
thyristor
