电力系统及其自动化学报2017，Vol.29Issue(4)：49-54,6.DOI:10.3969/j.issn.1003-8930.2017.04.008
孤岛型微电网中改进下垂控制策略
Improved Droop Control Strategy for Islanded Microgrid
摘要
Abstract
Due to the differences in feeder impedances and other factors in islanded microgrid,conventional droop control cannot achieve reasonable reactive power sharing according to droop coefficient.This paper proposes an improved droop control strategy.The central controller calculates a specified reactive power according to the total load and the capacity of each inverter,and then it sends the calculated results to each inverter.The inverter controller tunes the virtual impedance to compensate for the effect of mismatched feeder impedances,thus reactive power sharing is realized.An islanded microgrid simulation model is built in Matlab/Simulink platform,and simulation results verify the effectiveness of the proposed strategy.This paper can provide a reference for the actual operation of microgrid control.关键词
孤岛型微电网/下垂控制/虚拟阻抗/无功均分Key words
islanded microgrid/droop control/virtual impedance/reactive power sharing分类
信息技术与安全科学引用本文复制引用
李红萍,杨洪耕,曾巧燕,杨雪萍..孤岛型微电网中改进下垂控制策略[J].电力系统及其自动化学报,2017,29(4):49-54,6.
