分布式电源接入的配电网继电保护研究概述

Study and Summary on the Distributed Electric Source Connected to the Electric Network Relay Protection

分布式电源(Distributed Generation,DG)的接入改变了传统配电网的结构,电源控制策略的不同和潮流方向的变化等因素给传统配电网保护带来了严峻的挑战。本文从DG接入对原有保护和自动重合闸的影响出发,归纳总结目前国内外学者对DG模型、故障分析方法和保护方案的最新研究成果。最后,对含DG配电网保护的发展进行了展望,指出保护应遵循分区各司其职,区域之间运行结果共享,相互协调的原则,实现保护的最优化。

Distributed generation integration has changed the structure of the traditional distribution network, such as different power control strategies and the change of trend poses a serious challenge to the protection of traditional distribution network. This paper summarizes the latest results of scholars＇s researchs on power model,failure analysis method and protection scheme from the influence of DG integration on the original protection and auto reclose. Last, it puts forward prospect of the development of distribution network protection with distributed generation, puts out achiving optimal protection should follow the priciple that each region manages its own work and share the results between regions.