三种改进型桥式超导故障限流器的仿真分析和比较

Simulation Analysis and Comparison of Three Improved Bridge Type Superconducting Fault Current Limiters

文章分析比较了三种改进型桥式超导故障限流器(SFCL)的技术特点,介绍了三种改进型桥式SFCL的电路结构特点和工作原理,建立了10 kV配电网电路模型,针对配电网中出现的单相接地、两相接地、两相相间短路和三相接地等故障类型进行了仿真分析。仿真结果发现,不同的改进型SFCL在不同的故障类型中的限流效果不同。因此,在不同环境下易发的故障类型不同时选择合适的SFCL是必要的。

This paper analyzes and compares the technical characteristics of three improved bridge type Superconductor Fault Current Limiters(SFCL),and the circuit structure characteristics and working principle of the three kinds of improved bridge type SFCL are introduced and the 10kV distribution network circuit model is established.Simulation analysis is carried out for the single phase to ground fault,two phases to ground fault,phase to phase fault,three phases to ground fault and other fault types in the distribution network.The simulation results show that the current limiting effect of different improved SFCL is not similar in different fault types.Therefore,it is necessary to select the appropriate SFCL for the prone different fault types in different environments.