分布式电源对配电网重合闸的影响分析

Distributed Generation Impacts Analysis on Automatic Reclosing of Power Distribution Network

分布式电源并入配电网之后,网络由原有的单辐射型转变为双端或多端型网络,系统潮流方向随之改变,可能引起继电保护误动、拒动.依据配电网继电保护原理,建立了含DG的配电网模型,利用Matlab/Simulink软件对重合闸动作情况进行仿真,验证了理论分析的正确性.

When distributed generation(DG)is connected to distribution network,original single radiation network turns to double or more and load flow direction is also changed.This may lead to mal-operation or refused operation of relay protection.On the basis of the principle of relay protection,a simulation model of distribution network with distributed generation is established.The reclosing action is analysed through Matlab/Simulink module,and the correctness of the theoretical analysis is verified.