Control Method for Active Power in Electric-Hydrogen Hybrid Energy-Storage Microgrids

被引：0
|
作者：
Li Q. [1 ]
Li R. [1 ]
Li S. [1 ]
Pu Y. [1 ]
Sun C. [1 ]
Chen W. [1 ]
机构：
[1] School of Electrical Engineering, Southwest Jiaotong University, Chengdu
来源：
Xinan Jiaotong Daxue Xuebao/Journal of Southwest Jiaotong University | 2024年 / 59卷 / 03期
关键词：
electric-hydrogen microgrid; hybrid energy storage; power control;
D O I：
10.3969/j.issn.0258-2724.20210506
中图分类号：
学科分类号：
摘要：
In an AC system with parallel operation of electricity-hydrogen micro-grids, when adopting traditional control methods, the difference in output line impedance will affect inverters, and large circulating currents occurs such that a reasonable distribution of active power become inaccessible. Given the relationship between the voltage deviation and the active power, the active power distribution between multiple micro-grids is analyzed. Firstly, the AC system model of the electric-hydrogen hybrid energy-storage micro-grid is constructed, including photovoltaic, battery, fuel cell, and electrolyzer. Secondly, following the relationship between the active power and the voltage in the reverse droop control, a reverse droop control based on power following control is proposed to work out voltage deviation and auto-adjust the rated active power. Finally, within a parallel operation of electric-hydrogen micro-grids, the proposed method is compared with other methods and is verified by hardware-in-the-loop experiments on the platform of RT-LAB. The experimental results show that the proposed method outperforms other methods: the accuracy of power distribution after stabilization is 97.50%, the accuracy of the bus voltage is 99.86%, and the circulating current mostly ranges in [−3.0, 3.0] A. © 2024 Science Press. All rights reserved.
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页码：485 / 492and518
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