随着分布式电源(distributed generation，DG)并入配电网，使配电网的拓扑结构、潮流分布发生变化，传统的配电网继电保护配置不再适用于含分布式电源的配电网络。为了保证电力系统供电可靠性，充分发挥分布式能源的优势，需要对含有分布式电源的配电网保护方案进行研究。在阐述配电网三段式电流保护原理的基础上，详细讨论了分布式电源的准入容量和接入位置不同时，对其配电网不同故障点的电流保护产生的具体影响。并结合国内外的前沿研究成果，论述当前主要的解决方案，对其进行分类讨论不同保护方案的原理和特点，说明其利弊。该文所做工作对含有分布式电源的配电网保护有一定的参考价值。

With the integration of distributed generation (DG) into distribution network, the topological structureand power flow distribution of distribution network change. The traditional relay protection configuration of distribution network is no longer suitable for distribution network with DG. In order to ensure the power supply reliability of power system and give full play to the advantages of distributed energy, it is necessary to study the protection scheme of distribution network with distributed generation. On the basis of expounding the principle of three-stage current protection in distribution network, this paper discusses in detail the specific impact of different access capacity and access location of distributed generation on the current protection at different fault points of distribution network. Combined with the cutting-edge research results at home and abroad, the main solutions are discussed, the principles and characteristics of different protection schemes are classified, and their advantages and disadvantages are explained.. This paper has a certain reference value for the distribution network protection with distributed generation.