电力建设2024，Vol.45Issue(2)：49-57,9.DOI:10.12204/j.issn.1000-7229.2024.02.005
分布式新能源接入的10kV配电网保护适应性分析
Protection Adaptability Analysis of Distributed Generation Connected to 10 kV Distribution Network
摘要
Abstract
Distributed generation(DG)connected to a power network has changed the traditional single-radiation power supply network structure,while the two-way power flow and load current affect the safe and stable operation of power systems.In this study,the line protection adaptability under the scenario of DG connected to a 10 kV distribution network is analyzed.Based on the different locations of distributed generation,the effects of the infeed current,outflow current,and reverse current on the existing protection of the distribution network are analyzed theoretically.The effect of the power capacity of DG on the protection performance is clarified.Moreover,the protection performance boundary conditions of a 10 kV distribution network are quantified.This study provides theoretical support for subsequent research on protection configuration schemes and new protection principles.The simulation results verify the accuracy of the protection adaptability analysis.关键词
分布式电源(DG)/10kV配电网/保护适应性/边界条件Key words
distributed generation(DG)/10 kV distribution network/protection adaptability/boundary conditions分类
信息技术与安全科学引用本文复制引用
袁兆祥,张翼,聂铭,李猛,和敬涵..分布式新能源接入的10kV配电网保护适应性分析[J].电力建设,2024,45(2):49-57,9.基金项目
This work is supported by State Grid Corporation of China Research Program(No.5400-202256273A-2-0-XG).国家电网有限公司科技项目"面向新型电力系统的配电网二次系统规划设计关键技术研究"(5400-202256273A-2-0-XG) （No.5400-202256273A-2-0-XG）
