直流微网混合式零电压开关直流断路器.pdf

第 41 卷 第 9 期：3148-3155 高电压技术 Vol.41, No.9: 3148-3155 2015 年 9 月 30 日 High Voltage Engineering September 30, 2014 DOI: 10.13336/j.1003-6520.hve.2015.09.046 直流微网混合式零电压开关直流断路器 黄金强，廖敏夫，葛国伟，段雄英，王善军，董恩源 116024 （大连理工大学电气工程学院，大连 ） 摘 要：随着分布式电源技术的发展，直流微网是未来发展的新方向，应用于直流微网快速保护的直流断路器是 推动微网发展的关键技术。为此根据直流微网的保护要求提出了一种快速保护的混合式零电压开关(ZVS)直流断 路器总体方案，设计了混合式直流断路器的结构和控制系统，并对其关键技术：基于快速斥力机构的真空开关， IGBTs 并联技术和限压技术展开了研究。最后基于 Mayr 电弧模型和真空开关电弧电压建立了ZVS 混合式直流断 路器的仿真模型， 仿真得到了混合式断路器的电流转移特性和开断配合特性。最后根据研究结论，综合得到了 400 V/2 500 A 开断电流 10 kA，闭合时间200 μs，开断故障电流时间2 ms 的混合式直流断路器总体方案。 关键词：零电压开关；混合式直流断路器；IGBTs 并联技术；斥力机构；电弧模型；电流转移特性 Zero-voltage-switch Hybrid DC Switch for DC Microgrid HUANG Jinqiang, LIAO Minfu, GE Guowei, DUAN Xiongying, WANG Shanjun, DONG Enyuan (School of Electrical Engineering, Dalian University of Technology, Dalian 116024, China) With the development of distributed energy resource(DRE), DC microgrid becomes a future direction. The key Abstract ： technology for promoting DC microgrid is its DC switch. Hence, according to the protection requirements of DC micro- grid, we put forward an overall plan of zero-voltage-switch (ZVS) hybrid DC switch for rapid protection. The structure and control system of the hybrid DC switch were designed. Three crucial technologies of ZVS hybrid DC switch, namely, the high-speed vacuum switch structure based on electromagnetic repulsion driving mechanism, the parallel technique of IGBTs, and the voltage limiting, were studied through numerical simulations. The simulation model of ZVS hybrid DC switch was established by synthesizing the Mayr arc model and the