中文摘要：

探讨了分布式电源接入对电力系统的影响,着重论述了DG接入对配电网继电保护的影响;以10kV馈线的保护为例,探讨了分布式发电对单侧电源、辐射型网络中基于断路器的三段式电流保护、熔断器保护以及自动重合闸的影响,并针对今后大量DG渗入电力系统的情况提出设想。

英文摘要：

The paper discusses the effect of distributed generation（DG）upon power system,it is concluded that the presence of DG will deeply affect the network structure,the direction and amperage of short-current on power distribution system,and will affect the reliability and stability of the network.Taking the 10kV network as an example,the paper explores the effects of DG on protective device such as 3-sectional current protection based on circuit breakers,fuse-fuse coordination and reclosure.Finally,the author＇s ideas are proposed in case that large quantities of DGs are present in power distribution system.