分布式发电对配电网继电保护的影响  

Effect of Distributed Generation on Relay Protection in Distribution System

作　　者：高研[1] 毕锐[1] 杨为[1] 丁银[1] 

机构地区：[1]合肥工业大学教育部光伏系统工程研究中心,合肥230009

出　　处：《电网与清洁能源》2009年第4期20-23,共4页Power System and Clean Energy

基　　金：国家863项目(2007AA05Z240);国家自然科学基金项目(50607002)

摘　　要：分布式发电是一种新兴的高效、环保的发电技术,近年来获得飞速发展。然而,大量分布式发电系统的接入改变了配电网的故障电流大小和分布以及原有继电保护装置的基础条件,对配电网的继电保护造成影响。分析了分布式发电接入对馈线的两段式保护和自动重合闸以及分支线的熔断器保护产生的各种可能影响,对分布式发电的广泛推广具有一定的意义。As a new, efficient and clean power generation technology, distributed generation has been in fast development in recent years. However, The increasing proportion of distributed generation （DG） in power system will change the distribution network the amperage and distribution of short-circuit current and basic condition of previous relay protective device in the existing distribution network, and will thus affect the relay protection of the distribution network. The paper analyzes the possible effects of DG on feeder＇s 2-sectional current protection, automatic reclosing and the branch line＇s fuse protection. The research has a certain significance to broaden the application space of DG.

关 键 词：分布式发电 配电网 继电保护 

分 类 号：TM773[电气工程—电力系统及自动化]