电力系统及其自动化学报2025，Vol.37Issue(9)：91-100,10.DOI:10.19635/j.cnki.csu-epsa.001673
光储微电网混合式孤岛检测方法
Hybrid Island Detection Method for Optical Storage Microgrid
摘要
Abstract
To enhance the reliability of unplanned islanding detection in photovoltaic(PV)-battery microgrids,this pa-per proposes a hybrid islanding detection method that combines passive and active approaches.This method integrates the voltage variation characteristics induced by changes in the active power output of energy storage systems after an is-landing event,as well as the correlation between the reactive power imbalance of PV and energy storage systems and fre-quency deviation.In accordance with the energy storage control strategy,the operating regions of the energy storage sys-tem are divided into an action region and a non-action region.For the operating condition where the energy storage sys-tem is in the action region after an islanding event,a passive islanding detection criterion based on voltage variation characteristics is designed,which relies on the relative relationship between the active power adjustment speed of the energy storage and the voltage change rate.For the scenario where the energy storage system is in the non-action region after an islanding event,an active islanding detection method with adaptive reactive power perturbation in different fre-quency segments is developed,based on the correlation between the reactive power mismatch of PV and energy storage systems and frequency deviation.This method can not only reduce the perturbation magnitude during grid-connected op-eration but also force the frequency to quickly exceed the threshold value by utilizing reactive power perturbation after an islanding event.Simulation analyses verify that the proposed method can rapidly and accurately achieve islanding de-tection when the energy storage system operates in different regions.关键词
储能/光伏/微电网/非计划孤岛/混合式孤岛检测Key words
energy storage/solar power/microgrid/unplanned island/hybrid island detection分类
信息技术与安全科学引用本文复制引用
戚碧云,方愉冬,裘愉涛,方隽,王勇,杜钰珑..光储微电网混合式孤岛检测方法[J].电力系统及其自动化学报,2025,37(9):91-100,10.基金项目
国网衢州供电公司科技项目(5211QZ23004). （5211QZ23004）
