分布式电源对配电网继电保护影响的仿真与分析

分布式电源的接入改变了传统配电网的结构、潮流以及故障特征,对配电网继电保护具有一定影响.分析了不同类型的分布式电源对配电网继电保护的影响,利用PSASP软件搭建分布式电源的并网模型,并针对分布式电源的容量对配电网电流保护的影响作了仿真分析,提出了继电保护的调整及改进方案.;With the Distributed Generation(DG) paralleling into the distribution system, the structure, power flow and the characteristic have changed after failure of power system。So DG has brought a certain impact of protective relaying to the traditional distribution.The major factors which affect the relay characteristic, such as the type of DG are analyzed.The Power System Analysis Software Package(PSASP) is used to simulate the distribution network which is paralleUed to the DG.Adjustments are needed for traditional protective relaying scheme