湖北民族学院学报(自然科学版)2017，Vol.35Issue(1)：76-80,5.DOI:10.13501/j.cnki.42-1569/n.2017.03.018
微网接入对配电网继电保护影响的研究
Effects of Micro-grid Access on the Relay Protection of Power Distribution Network
摘要
Abstract
The micro-grid access can reduce the network loss of the feeder and improve the reliability of power supply and energy efficiency.Now the internal structure of the micro-grid has become more and more complex.With lot of power supply devices connected to the micro-grid,in the event of a short circuit or open circuit fault,the relevant parameters of the current and voltage will have some changes,which will greatly increase the difficulty of fault location.This paper analyzes the micro-grid control mode and DG control under the grid-connected and off-grid state.By accurately positioning the fault type of distributed power supply and studying in detail the real-time status of the relay,we have established an equivalent model of inverter distributed generation under grid-connected operation and a distribution system model including micro-grid in PSCAD/EMTDC software aiming at the impact of the micro-grid access on the relay protection device of distribution network.关键词
微网/分布式发电/储能装置/配电网Key words
micro-grid/distributed generation/energy storage device/distribution network/relay protection分类
信息技术与安全科学引用本文复制引用
瞿朝庆..微网接入对配电网继电保护影响的研究[J].湖北民族学院学报(自然科学版),2017,35(1):76-80,5.基金项目
国家自然科学基金项目(61263030 （）
61463014) （）
