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Economic dispatch of integrated energy systems taking into account the participation of flexible loads and concentrated solar power plants

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  • Chen, Nan
  • Gao, Junheng
  • Gao, Lihui
  • Yang, Shuanghao
  • Chen, Shouyan

Abstract

In light of the high penetration of renewable energy sources into the grid and the associated power curtailment phenomenon, this paper proposes a multi-energy conversion scheduling strategy for an electric-heat-gas-cooling integrated energy system. To mitigate the operational constraints and environmental impact of conventional cogeneration units, this study integrates a concentrating solar power plant equipped with a thermal storage system into the conventional cogeneration framework. Moreover, considering load-side uncertainties, flexible electric and thermal loads are incorporated into system scheduling to enhance system adaptability and operational flexibility. Finally, a mixed-integer programming algorithm is employed to solve the optimization problem. Simulation results demonstrate that incorporating the flexible load scheduling strategy reduces daily operational costs by 2.82 %, power curtailment losses by 22.07 %, and decreases the peak-to-valley difference of electric loads by 14.68 %. Integrating concentrating solar power plant into system operation reduces daily operational costs by 3.70 %, cuts carbon emissions by 20.30 %, and lowers daily gas purchases by 11.49 %. These findings validate the feasibility and effectiveness of the proposed approach.

Suggested Citation

  • Chen, Nan & Gao, Junheng & Gao, Lihui & Yang, Shuanghao & Chen, Shouyan, 2025. "Economic dispatch of integrated energy systems taking into account the participation of flexible loads and concentrated solar power plants," Energy, Elsevier, vol. 320(C).
    • Handle: RePEc:eee:energy:v:320:y:2025:i:c:s0360544225008643
    DOI: 10.1016/j.energy.2025.135222
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