Study on Reactive Power Control Technology of Micro-grid Based on Improved Droop Control

GAO Kun; ZHENG Shuaifeng; XIN Ningyi; CUI Yan; HUANG Min

doi:10.14044/j.1674-1757.pcrpc.2018.05.026

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Study on Reactive Power Control Technology of Micro-grid Based on Improved Droop Control

更新时间：2024-09-14

- Study on Reactive Power Control Technology of Micro-grid Based on Improved Droop Control
- POWER CAPACITOR & REACTIVE POWER COMPENSATION Vol. 39, Issue 5, Pages: 149-154(2018)
- 作者机构：
  
  国网湖南常德供电公司
- 作者简介：
- 基金信息：
- DOI：10.14044/j.1674-1757.pcrpc.2018.05.026
  CLC： TM732
- Published：2018，
- 稿件说明：
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[1]高坤,郑帅峰,辛宁怡,崔艳,黄敏.基于改进下垂控制的微电网无功控制技术研究[J].电力电容器与无功补偿,2018,39(05):149-154.

GAO KUN, ZHENG SHUAIFENG, XIN NINGYI, et al. Study on Reactive Power Control Technology of Micro-grid Based on Improved Droop Control. [J]. Power capacitor & reactive power compensation, 2018, 39(5): 149-154.
[1]高坤,郑帅峰,辛宁怡,崔艳,黄敏.基于改进下垂控制的微电网无功控制技术研究[J].电力电容器与无功补偿,2018,39(05):149-154. DOI： 10.14044/j.1674-1757.pcrpc.2018.05.026.

GAO KUN, ZHENG SHUAIFENG, XIN NINGYI, et al. Study on Reactive Power Control Technology of Micro-grid Based on Improved Droop Control. [J]. Power capacitor & reactive power compensation, 2018, 39(5): 149-154. DOI： 10.14044/j.1674-1757.pcrpc.2018.05.026.

摘要

微电网的功率平衡和电压稳定控制通常采用传统的下垂控制

考虑到不同微电源（distributed generation

DG）之间等效阻抗差异使得无功分配不均

引起DG之间的环流进而增加损耗和降低系统电压质量。对此

提出了一种基于无功合理分配和系统电压稳定的改进型下垂控制策略

通过引入无功补偿环节和电压恢复机制实现微电网有效的无功控制。最后

在Matlab/Simulink仿真验证了该改进的下垂控制在实现无功合理分配和系统电压稳定的同时不影响有功的输出。

Abstract

The traditional drop control is adopted for the power balance and voltage stability control of themicro-grid. Uneven distribution of reactive power due to equivalent impedance difference between the dif-ferent generations（DG）leads to loop current between DG and

thus increasing the loss and reducing volt-age quality of the system. In this regard

an improved droop control strategy based on reasonable distribu-tion of reactive power and system voltage stability is proposed so to achieve the effective reactive power con-trol by introducing reactive power compensation link and voltage recovery mechanism. Finally

the reason-able reactive power distribution and stability of system voltage without simultaneously the influence of reac-tive power output by the drop control is verified through the Matlab/Simulink simulation.

关键词

微电网孤岛模式改进下垂控制无功补偿电压恢复分布式发电

Keywords

micro-gridisland modeimproved droop controlreactive power compensationvoltage recoverydistributed generation（DG）

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