期刊
JOURNAL OF ENERGY STORAGE
卷 74, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.est.2023.109283
关键词
Modular-gravity energy storage; Control strategy; Energy management system; Modeling; Simulation
This paper studies the energy management system of gravity energy storage technology and proposes a maximum height difference control method, which has been validated to be effective. The research findings indicate that gravity energy storage technology has wide application prospects.
As a new type of large-scale energy storage technology, gravity energy storage technology will provide vital support for building renewable power systems with robust performance. Compared with a single giant block, gravity energy storage technology based on several modular blocks (M-GES) has various advantages (such as easy standardization, mass production, and easy expansion), and is receiving increasingly widespread attention. However, there is a lack of research on its energy control. This paper systematically studies the energy management system (EMS) of M-GES plants. We establish a general M-GES state-of-charge model for the first time and propose the maximum height difference control (MHC) for EMS. To validate the effectiveness of the MHC, we use sinusoidal test power and a natural California load curve in MATLAB/Simulink. Finally, we summarize the characteristics of the proposed control strategies in conclusion and provide a guideline for further research.
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