摘要
介绍了分布式电源(DG)的概念、传统配电网结构特点及保护配置情况。以含DG的配电网为模型分析不同位置引入分布式发电后,当DG上游、下游地区及相邻馈线发生故障时,对短路电流、保护装置产生的影响。对重合闸动作方式做了改进,以保证故障时DG能快速与系统裂解,检同期自动重合闸合闸后DG能并网稳定运行。针对DG对配电网产生的影响,概括了含DG的配电网继电保护的研究方向并同时提出改进方案。
The paper introduces the concept of distributed generation and the structural features and protection configuration of traditional distribution network. To contain the DG in the distribution net- work for the model, it analyses the impact of DG on short-circuit current and protection devices when DG is connected to different positions and fault occurs in upstream and downstream regions of DG, and the adjacent feeder. Meanwhile, in order to ensure that DG can crack with system quickly and operate stably in the grid after the action of synchronous reclosing when fault occurs, it is proposed to improve the way of reclosing action. In view of the impact of DG on distribution network, the paper summarizes the research direction of relay protection of distribution network which includes DG, and puts forward the improved scheme.
出处
《重庆理工大学学报（自然科学）》
CAS
2014年第1期87-90,共4页
Journal of Chongqing University of Technology：Natural Science
关键词
分布式电源
配电网
继电保护
distributed generation
distributed network
relay protection
