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Typical unit capacity configuration strategies and their control methods of modular gravity energy storage plants

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  • Tong, Wenxuan
  • Lu, Zhengang
  • Chen, Yanbo
  • Zhao, Guoliang
  • Hunt, Julian David
  • Ren, Dawei
  • Xu, GuiZhi
  • Han, Minxiao

Abstract

Modular Gravity Energy Storage (M-GES) systems are emerging as a pivotal solution for large-scale renewable energy storage, essential for advancing green energy initiatives. This study introduces innovative capacity configuration strategies for M-GES plants, namely Equal Capacity Configuration (EC) and Double-Rate Capacity Configuration (DR), tailored to optimize energy storage efficiency and stability. Through comprehensive MATLAB/Simulink simulations, we demonstrate each configuration's distinct power characteristics and operational advantages. Our findings reveal that while the EC configuration offers enhanced power accuracy and stability, it requires a larger number of units. In contrast, the DR configuration, characterized by fewer but larger units, shows a trade-off with reduced power stability. This paper contributes significantly to the field by presenting a first-of-its-kind comparative analysis of these configurations, offering insights into their practical applications and scalability. The proposed strategies and findings lay a foundation for future research and development in gravity energy storage systems, marking a step forward in pursuing sustainable and reliable energy solutions.

Suggested Citation

  • Tong, Wenxuan & Lu, Zhengang & Chen, Yanbo & Zhao, Guoliang & Hunt, Julian David & Ren, Dawei & Xu, GuiZhi & Han, Minxiao, 2024. "Typical unit capacity configuration strategies and their control methods of modular gravity energy storage plants," Energy, Elsevier, vol. 295(C).
    • Handle: RePEc:eee:energy:v:295:y:2024:i:c:s0360544224008193
    DOI: 10.1016/j.energy.2024.131047
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