【摘要】 为简化电路和控制方法,降低成本并提高可靠性,提出了一种基于单个可控开关的新型桥式短路故障限流器。对新型限流器的拓扑结构、控制策略和限流工作原理进行了详细介绍。在正常情况下,可控开关被触发并处于常通状态,限流器在系统中等效为一个点,对电力系统几乎无不良影响。当短路故障发生并被检测到之后,只需要简单地关断唯一的可控开关,即可实现对限流器的控制。采用PSIM6软件对新的短路限流器进行了仿真研究。制作了小容量的限流器实验装置,并进行了详细的实验研究。仿真和实验结果一致,验证了所提限流器及其控制策略的有效性和实用性。更多还原

【Abstract】 A bridge-type FCL(Fault Current Limiter) based on single controllable switch is proposed to simplify the circuit and control method,reduce the cost and enhance the reliability.Its principle,topology and control method are depicted in detail.In normal status,the controllable switch is of full conduction and the FCL acts as a point,with little harmful effect on power system.When a fault happens and is detected,the controllable switch is turned off to limit the fault current.Simulation with Power Sim6.0 is carried out.A FCL prototype with small capacity is established and experimentally investigated.Results prove its validity and practicability.更多还原