电力系统及其自动化学报2025，Vol.37Issue(7)：22-30,9.DOI:10.19635/j.cnki.csu-epsa.001596
基于正序电流故障分量投影的有源配电网差动保护方法
Differential Protection Method for Active Distribution Networks Based on Projection of Positive-sequence Current Fault Component
摘要
Abstract
To address the impact of complex and stochastic fault characteristics of distributed generations(DGs)on the feeder current protection in distribution networks,a differential protection method based on the projection of positive-se-quence current fault component is proposed.First,the control strategies for DGs and the relationship between the out-put current of inverter-interfaced DG(IIDG)and the voltage at a grid-connected point are analyzed.Second,the charac-teristic differences in positive-sequence current fault components among different types of DG are investigated.Through the analysis of the evolution of fault characteristics in IIDG-integrated distribution networks under voltage sags and phase-angle jumps at the grid-connected point,a differential protection criterion is constructed based on the projection of positive-sequence current fault components.Finally,the effectiveness of the proposed method is validated through PSCAD/EMTDC simulations.关键词
有源配电网/正序电流故障分量投影/电压跌落/相位突变/差动保护Key words
active distribution network/positive-sequence current fault component projection/voltage sag/phase-an-gle jump/differential protection分类
信息技术与安全科学引用本文复制引用
王盛,许仕杰,张溪洋,曾举鹏,贺世庚..基于正序电流故障分量投影的有源配电网差动保护方法[J].电力系统及其自动化学报,2025,37(7):22-30,9.基金项目
国家自然科学基金资助项目(52177070).国家电网有限公司科技项目(5400-202322560A-3-2-ZN). （52177070）
