故障限流器在新能源并网中最佳安装位置和参数配置研究

当电力系统发生短路故障时,为了防止并网容量逐年增加的分布式电源提供过大的短路电流,该文提出安装故障限流器(FCL)来限制短路电流突增的问题.FCL的安装主要考虑安装位置和参数配置,利用PSCAD/EMTDC搭建典型仿真模型,分别进行有/无新能源情况下,不同故障点的短路电流变化情况,对比得出新能源并网端变化最大,即FCL...

RESEARCH ON OPTIMAL INSTALLATION LOCATION AND PARAMETER CONFIGURATION OF FAULT CURRENT LIMITER IN NEW ENERGY GRID

When a short-circuit fault occurs in the power system,in order to prevent excessive short-circuit currents from being distributed to the distributed power generation supply,the fault current limiter(FCL)is installed to limit the sudden increase of the short-circuit currents.The installation of FCL mainly considers the installation location and parameter configuration.The typical simulation model is built by PSCAD/EMTDC,and the short-circuit current changes at different fault points are carried out with/without new energy,and the comparison shows that the new energy grid end has changed the most.That is,the FCL optimal installation position.According to the system model,the FCL parameter objective function is set,and the improved particle swarm optimization(PSO)algorithm is used to obtain the optimal value of the objective function,that is the FCL optimal parameter.Through the control variable method,three comparison schemes are designed in this paper to verify the feasibility and accuracy of the method.