电气传动2026，Vol.56Issue(8)：49-58,10.DOI:10.19457/j.1001-2095.dqcd26635
有限量测下基于零序电压推算的有源配电网区域保护方法
Zero-sequence Voltage Estimation Based Regional Protection Method for Active Distribution Networks Under Limited Measurement
摘要
Abstract
Recent advancements in high-precision measurement devices,such as mirco-phase measurement unit(μPMU),offer technical support for regional protection schemes.However,deploying μPMU across all network nodes remains impractical due to economic and practical constraints.Therefore,under low-resistance grounded distribution network conditions,a node zero-sequence voltage estimation method was proposed under limited μPMU deployment.Furthermore,this method was applied to estimate unknown zero-sequence voltages at nodes within fault regions,enabling calculation of the relative position coefficient α between fault points and regional lines.Based on α,a fault line identification criterion was established,forming a regional protection scheme.Finally,simulation results validate the effectiveness of the proposed method.关键词
配电网区域保护/零序电压推算/有限量测/逆变式分布式电源Key words
distribution network regional protection/zero-sequence voltage estimation/limited measurement/inverter interfaced distributed generator(DG)分类
信息技术与安全科学引用本文复制引用
李娟,姜云龙,朱睿,杨雄..有限量测下基于零序电压推算的有源配电网区域保护方法[J].电气传动,2026,56(8):49-58,10.基金项目
国家电网有限公司科技项目(J2023102) （J2023102）
