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Optimal scheduling for electric-heat-gas systems: Harnessing nonlinear thermoelectricity of hydrogen fuel cells

Author

Listed:
  • Fu, Hao
  • Kong, Fang
  • Wu, Xiao
  • Lee, Kwang Y.
  • Wu, Feng

Abstract

Hydrogen fuel cell, having features of high efficiency and zero carbon emission, has shown great application potential in integrated energy systems. To this end, a novel optimal scheduling strategy of electric-heat-gas (EHG) integrated energy system considering the heat and power coupling characters of hydrogen fuel cell is proposed in this paper. However, the intricate thermoelectric coupling characteristics of fuel cells need to be investigated to develop the refined scheduling modes. Based on the constructed mechanism model of hydrogen fuel cell, the thermoelectric coupling characteristics of hydrogen fuel cell cogeneration is analyzed among the feasible region, and further linearized as a series of constraints in the scheduling model. Considering the carbon trading cost, energy purchase cost and wind curtailment cost, the scheduling model of the EHG integrated energy system is developed. The results show that consideration of nonlinear thermoelectric coupling characteristics has improved the scheduling accuracy, which is more desirable in real projects. Using the established scheduling strategy, the available renewable resources can be fully absorbed. The carbon emissions and the total cost are significantly reduced, by 25.8 % and 16 %, respectively. Studies also indicate that the proposed optimal scheduling significantly enhances the operational flexibility and economic effect of the system.

Suggested Citation

  • Fu, Hao & Kong, Fang & Wu, Xiao & Lee, Kwang Y. & Wu, Feng, 2025. "Optimal scheduling for electric-heat-gas systems: Harnessing nonlinear thermoelectricity of hydrogen fuel cells," Renewable Energy, Elsevier, vol. 253(C).
    • Handle: RePEc:eee:renene:v:253:y:2025:i:c:s0960148125012613
    DOI: 10.1016/j.renene.2025.123599
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