基于电力电子复合开关的限流式混合直流断路器参数设计

发布时间：2018-01-10 19:01

本文关键词：基于电力电子复合开关的限流式混合直流断路器参数设计　出处：《电力系统自动化》2015年11期 　论文类型：期刊论文

【摘要】：研究了基于电力电子复合开关的限流式混合直流断路器。采用电力电子复合开关,以降低高压混合式直流断路器的电力电子功率器件串联数量;采用特殊设计的限流电路,在故障发生时抑制短路电流的上升速率,并可在线路断开后自行释放能量,避免感应过电压的产生。同时,对限流式混合直流断路器的参数设计原则及复合开关的配置方法进行了详细的推导,并对其正确性进行仿真验证。仿真结果证明,采用文中所述方法进行限流式混合直流断路器的设计,不仅可以在直流电路发生短路故障时有效限制短路电流上升率,降低短路电流开断难度,还可以显著减少器件串联数量,从而达到降低装置体积与成本的目的。
[Abstract]:A hybrid DC circuit breaker with limited current based on power electronic compound switch is studied. The power electronic compound switch is adopted to reduce the number of power electronic power devices in series. A specially designed current-limiting circuit is used to suppress the rise rate of short-circuit current when the fault occurs, and to release energy by itself after the circuit is disconnected, thus avoiding the generation of inductive overvoltage. The design principle of the parameters and the configuration method of the compound switch are deduced in detail, and the correctness of the hybrid DC circuit breaker is verified by simulation. The simulation results prove the correctness of the hybrid DC circuit breaker. The method described in this paper can not only limit the rise rate of short-circuit current and reduce the difficulty of short-circuit current breaking, but also can effectively limit the rise rate of short-circuit current in the case of short-circuit fault of DC circuit. It can also significantly reduce the number of devices in series, thus achieving the purpose of reducing device volume and cost.
【作者单位】：浙江大学电气工程学院;
【基金】：国家高技术研究发展计划(863计划)资助项目(2013AA050103)~~
【分类号】：TM561
【正文快照】： 0引言高压直流输电以交流输电不可替代的优点,在远距离大功率输电和交流系统的非同步联络等方面得到广泛的应用。近十几年来,轻型直流输电技术的提出和发展,更使直流输电延伸到了近距离、小容量的输电场合。另一方面,面对经济社会的快速发展,用户对电力系统提出了更加环境友好

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