高电压技术2023，Vol.49Issue(12)：5217-5227,11.DOI:10.13336/j.1003-6520.hve.20221709
基于锁频环控制的多逆变器孤岛检测方法
Multi-inverter Islanding Detection Method Based on Frequency-locked Loop Control
摘要
Abstract
To solve the problem of dilution effect caused by mutual cancellation of the injected disturbances in the multi-distributed generation(DG)islanding detection,a master-slave control multi-DG islanding detection method based on frequency-locked loop control is proposed.In this method,the phases when islanding occurs are controlled and locked through the frequency-locked loop,so that the phases of the inverter's output voltage and current are the same.Then,a DG controlled by a phase-locked loop is selected as the main inverter,and the rest of the DGs are controlled by the frequency-locked loop.The results of MATLAB/Simulink simulation and RT Box physical experiments show that the di-lution effect can be eliminated and the multi-DG islanding can be detected.The proposed method can reduce the probability of DG's"reverse power transmission"and improve the security of power supply.关键词
配电网/分布式电源/孤岛检测/锁频环控制/主从控制/稀释效应Key words
distribution networks/distributed power generation/islanding detection/frequency-locked loop control/master-slave control/dilution effect引用本文复制引用
李文龙,张新慧,彭克,张军,王锐,郭爱玉..基于锁频环控制的多逆变器孤岛检测方法[J].高电压技术,2023,49(12):5217-5227,11.基金项目
国家自然科学基金(51807112) （51807112）
张店区校城融合发展计划项目(2021JSCG0006).Project supported by National Natural Science Foundation of China(51807112),The University & Zhangdian District Integration Development Project(2021JSCG0006). （2021JSCG0006）
