A MICROGRID POWER SHARING STRATEGY WITH ADAPTIVE VOLTAGE COMPENSATION AND RESTORATION

被引：0
|
作者：
Peng Z. [1 ]
Huang H. [1 ]
Yang L. [1 ]
机构：
[1] School of Automation, Guangdong University of Technology, Guangzhou
来源：
Taiyangneng Xuebao/Acta Energiae Solaris Sinica | 2023年 / 44卷 / 07期
关键词：
adaptive voltage compensation; microgrid; parallel inverter system; power allocation; restoration;
D O I：
10.19912/j.0254-0096.tynxb.2022-0471
中图分类号：
学科分类号：
摘要：
In high/low voltage level microgrids，the difference in line parameters leads to the fact that the output power of inverter cannot be accurately shared and a circulating current occurs between the systems. The traditional droop control cannot solve this problem well. To this end，a microgrid power sharing control strategy with adaptive voltage compensation and restoration is proposed in this paper. Firstly，by introducing virtual impedance，the total output impedance of inverter at high/low voltage levels is inductive/resistive. Secondly，an adaptive voltage compensation method is proposed in the improved droop control，which eliminates the deviation between the output voltages of system and realizes the accurate equalization of reactive power/active power，but there is a problem that the total output power of system decreases. Then，on the basis of the above，the voltage recovery method is proposed to restore the total output power of system to the initial state without affecting the power sharing accuracy. Finally，the effectiveness of the proposed strategy is verified by experiments. © 2023 Science Press. All rights reserved.
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页码：61 / 70
页数：9
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