摘要
在介绍分布式电源概念及传统配电网结构和继电保护配置的基础上,以包含分布式电源(DG)的配电系统为模型,详细讨论了DG并入配电网不同馈线不同区段时,对原有配电网继电保护及安全自动装置的影响,重点分析DG上下游及相邻馈线不同地点发生短路故障,短路电流的大小和分布对三段式过流保护和反时限过电流保护配合特性及动作行为的影响,并论述了DG对自动重合闸的影响,为并入DG后的配电网继电保护算法研究提供了一定的理论依据。
On the basis of introducing the concept of distributed generation（DG） and the structure and protection configuration of traditional distribution system, this paper discusses detailedly the effects of DG on relay protection and automatic devices when DG is connected to different positions by using a distribution system containing DG as a model. It emphasizes the cooperation and operation behavior of three-sect current protection and inverse over-current protection when short fault occurs at different positions of various feeders, and also discusses effects of DG on automatic reclosing, which provides some theoretical basis for relay protection algorithm research of distribution system.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2010年第3期1-5,10,共6页
Power System Protection and Control
关键词
分布式电源
并网运行
配电网
继电保护
自动重合闸
DG： parallel operation： distribution system
relay protection
automatic reclosing
