含多分布式电源的孤岛微电网改进下垂控制策略

吉林大学学报(信息科学版) ›› 2020, Vol. 38 ›› Issue (4): 402-409.

含多分布式电源的孤岛微电网改进下垂控制策略

付光杰¹，吕春明¹，江雨泽²，齐少拴¹，李佳敏¹

1．东北石油大学电气信息工程学院，黑龙江大庆163000; 2．哈尔滨科学技术职业学院现代服务学院，哈尔滨150300

收稿日期:2020-04-09 出版日期:2020-07-24 发布日期:2020-08-13
作者简介:付光杰( 1962— ) ，女，吉林通化人，东北石油大学教授，博士生导师，主要从事电力电子技术、电机调速控制技术和电力系统节能技术等研究，( Tel) 86-13936780179( E-mail) fgjmhw@163． com。
基金资助:
国家自然科学基金资助项目( 51474069)

Improved Droop Control Strategy for Islanding Microgrid with Multiple Distributed Generations

FU Guangjie¹，LV Chunming¹，JIANG Yuze²，QI Shaoshuan¹，LI Jiamin¹

1． School of Electrical Engineering and Information，Northeastern Petroleum University，Daqing 163000，China; 2． College of Modern Service，Harbin Vocational College of Science and Technology，Harbin 150300，China

Received:2020-04-09 Online:2020-07-24 Published:2020-08-13

摘要/Abstract

摘要： 含多分布式电源并联运行的孤岛微电网，由于各线路阻抗差异，采用下垂控制策略无法实现无功功率合
理分配。为此，提出一种自调节虚拟阻抗下垂控制策略，通过无功功率调整虚拟阻抗，在不检测线路阻抗参数
的情况下补偿阻抗差异引起的输出电压差异，使各逆变器输出无功功率均等分配或按容量比分配。在Matlab /
Simulink 中搭建含有两个分布式电源并联运行的孤岛微电网仿真模型，在两种情况下验证了改进下垂控制策略
能实现无功功率均分和按容量比分配。

关键词: 孤岛微电网, 无功均分, 自调节虚拟阻抗, 下垂控制

Abstract: In an island microgrid with multiple distributed generations operating in parallel，due to the difference
in impedance of each line，a reasonable control of reactive power can not be achieved using the droop control
strategy． This paper proposes a self-adjusting virtual impedance droop control strategy，which adjusts the virtual
impedance through reactive power and compensates the output voltage difference caused by the impedance
difference without detecting the line impedance parameters，so that the output reactive power of each inverter is
equally distributed or according to the capacity ratio． Using Matlab /Simulink，an isolated island microgrid
simulation model with two distributed generations and parallel operation was built． In two cases，it is verified that
the improved droop control strategy can achieve reactive power sharing and distribution according to capacity
ratio．

Key words: Island microgrid, reactive power sharing, self-adjusting virtual impedance, droop control

中图分类号:

TN710

付光杰, 吕春明, 江雨泽, 齐少拴, 李佳敏. 含多分布式电源的孤岛微电网改进下垂控制策略[J]. 吉林大学学报(信息科学版), 2020, 38(4): 402-409.

FU Guangjie, LV Chunming, JIANG Yuze, QI Shaoshuan, LI Jiamin. Improved Droop Control Strategy for Islanding Microgrid with Multiple Distributed Generations[J]. Journal of Jilin University (Information Science Edition), 2020, 38(4): 402-409.