POWER COORDINATED CONTROL AND HARMONIC COMPENSATION OF ELECTRICITY-HYDROGEN ENERGY MICROGRID CLUSTERS

Xu Wanwan; Wang Bin; Liu Jiang; Xia Zhihui

doi:10.19912/j.0254-0096.tynxb.2023-0218

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Acta Energiae Solaris Sinica ›› 2024, Vol. 45 ›› Issue (6) : 201-207. DOI: 10.19912/j.0254-0096.tynxb.2023-0218

POWER COORDINATED CONTROL AND HARMONIC COMPENSATION OF ELECTRICITY-HYDROGEN ENERGY MICROGRID CLUSTERS

Xu Wanwan¹, Wang Bin¹, Liu Jiang², Xia Zhihui¹

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Abstract

Aiming at the problem of efficiently consuming ahigh proportion of renewable energy under the dual carbon goals, hydrogen production through water electrolysis is connected to the microgrid clusters as resilient load, and the electricity-hydrogen energy microgrid clusters is established, and the power coordinated control and power quality improvement strategyies are proposed. Firstly, the power coupling mechanism of AC/DC subgrid is analyzed, a bidirectional power control method considering subnet priority is established based on the interlinking converter, and the resilient load is connected to the low-priority subgrid, and a hierarchical power coordination control strategy based on real-time operation state-deviation in each-subgrid calculation is proposed. Then, aiming at the harmonic problem introduced by the rectifier for hydrogen production through water electrolysis, a control technology based on real-time load impedance estimation and droop control of multiple interconnected converters to improve power quality is proposed. Finally, through the Matlab/Simulink software platform, a ring connection microgrid clusters is built, and the experimental results show that the proposed strategy has fast dynamic response, which verifies the effectiveness of the power coordinated control and harmonic compensation strategies.

Key words

hydrogen energy / hydrogen production / microgrid / converter / hierarchical power coordinated control / harmonic compensation

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Xu Wanwan, Wang Bin, Liu Jiang, Xia Zhihui. POWER COORDINATED CONTROL AND HARMONIC COMPENSATION OF ELECTRICITY-HYDROGEN ENERGY MICROGRID CLUSTERS[J]. Acta Energiae Solaris Sinica. 2024, 45(6): 201-207 https://doi.org/10.19912/j.0254-0096.tynxb.2023-0218

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