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<p>The dynamic performance of suspended weight gravity energy storage systems (SWGESS) is crucial for operational stability and energy storage efficiency, particularly under disturbances. Accurately modeling flexible wire ropes, known for their nonlinear behavior and spatial variability, remains challenging. This study proposes a hybrid dynamic modeling method integrating the transfer matrix method for multibody systems and the finite segment method, thereby balancing computational efficiency and flexibility. Wind-induced pressure, calculated via computational fluid dynamics, is applied to the model to analyze system responses. Comparative analysis of dynamic responses across different weight shapes demonstrates that structural design influences vibration characteristics under wind loads. The proposed model achieves high computational accuracy (maximum deviation of 0.8906 mm compared with the finite element model) while reducing computation time by approximately 34 times, thereby offering a robust framework for enhancing SWGESS’ stability in complex environments. This research provides valuable theoretical and practical insights for addressing dynamic challenges in SWGESS.</p>

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Dynamic modeling and performance analysis of suspended weight gravity energy storage system under wind loads

  • 期刊论文

  • 发表日期：

    2026年1月10日

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  • Kun Cai,
  • Yifeng Han,
  • Yesen Zhu,
  • Haodong Cheng,
  • Yu Chang,
  • Wan Sun,
  • Jun Wang,
  • Guanggui Cheng,
  • Zhongqiang Zhang

摘要

The dynamic performance of suspended weight gravity energy storage systems (SWGESS) is crucial for operational stability and energy storage efficiency, particularly under disturbances. Accurately modeling flexible wire ropes, known for their nonlinear behavior and spatial variability, remains challenging. This study proposes a hybrid dynamic modeling method integrating the transfer matrix method for multibody systems and the finite segment method, thereby balancing computational efficiency and flexibility. Wind-induced pressure, calculated via computational fluid dynamics, is applied to the model to analyze system responses. Comparative analysis of dynamic responses across different weight shapes demonstrates that structural design influences vibration characteristics under wind loads. The proposed model achieves high computational accuracy (maximum deviation of 0.8906 mm compared with the finite element model) while reducing computation time by approximately 34 times, thereby offering a robust framework for enhancing SWGESS’ stability in complex environments. This research provides valuable theoretical and practical insights for addressing dynamic challenges in SWGESS.