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Optimal operation for P2H system with 100% renewable energy concerning thermal-electric properties

Author

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  • Sun, Jing
  • Xia, Yanghong
  • Peng, Yonggang
  • Wang, Anqi
  • Xiong, Jia
  • Wei, Wei

Abstract

Power to hydrogen (P2H) system with renewable energy sources is an important research point for sustainable development. Developing a comprehensive model to accurately capture the thermal-electric characteristics of an electrolyzer and utilizing it to optimize the system’s performance pose a significant challenge. In this paper, we develop an energy conversion model of the Alkaline Water Electrolyzer (AWE), describing the impact of temperature on AWE’s operation. Then, using experimental fitting methods, we fit the important formulas of the model: the maximum power (MMP) function and the efficiency function. Subsequently, based on the proposed energy conversion model, we propose an active variable temperature (AVT) operation strategy for the P2H system with renewable energy aimed at maximizing hydrogen production. At last, cases for both the day-ahead and hour-ahead situations are conducted with real photovoltaic power. The simulation results show that the AVT operation strategy achieves up to 3% higher hydrogen production and nearly 100% renewable energy utilization rates.

Suggested Citation

  • Sun, Jing & Xia, Yanghong & Peng, Yonggang & Wang, Anqi & Xiong, Jia & Wei, Wei, 2024. "Optimal operation for P2H system with 100% renewable energy concerning thermal-electric properties," Energy, Elsevier, vol. 308(C).
    • Handle: RePEc:eee:energy:v:308:y:2024:i:c:s0360544224027749
    DOI: 10.1016/j.energy.2024.133000
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