Parallel operation technology of distributed generation based on self-regulation droop control

被引：0
|
作者：
Bai G. [1 ]
Chen Z. [1 ]
Liu F. [1 ]
机构：
[1] College of Electrical Engineering, Guizhou University, Guiyang
来源：
Dianli Xitong Baohu yu Kongzhi/Power System Protection and Control | 2019年 / 47卷 / 08期
基金：
中国国家自然科学基金;
关键词：
Circulating current suppression; Improved droop control; Line impedance; Power distribution; Self-regulation;
D O I：
10.7667/PSPC180466
中图分类号：
学科分类号：
摘要：
In distributed island mode, each distributed power source operates in parallel. Because of the difference in impedance values of transmission lines, it is difficult to achieve a reasonable distribution of reactive power output in proportion to the DG capacity using traditional droop control. To solve this problem, this paper proposes an improved self-regulating droop control strategy. Based on the traditional reactive-voltage droop control, the improved strategy introduces a proportional-integral control link on the output reactive power. Then, the reactive power output is independent of line impedance. In this way, the reactive power output can be reasonably distributed according to the DG capacity ratio, and the reactive circulating current component of the system is suppressed. Finally, the DG parallel operation simulation model is built by Matlab simulation platform to verify the effectiveness of the improved strategy. © 2019, Power System Protection and Control Press. All right reserved.
引用
收藏
页码：120 / 126
页数：6
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