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Coordination of Hydropower Generation and Export Considering River Flow Evolution Process of Cascade Hydropower Systems

Author

Listed:
  • Pai Li

    (National Key Laboratory of Renewable Energy Grid Connection, China Electric Power Research Institute, Beijing 100192, China)

  • Hui Lu

    (National Key Laboratory of Renewable Energy Grid Connection, China Electric Power Research Institute, Beijing 100192, China)

  • Lu Nan

    (College of Electrical Engineering, Sichuan University, Chengdu 610065, China)

  • Jiayi Liu

    (College of Electrical Engineering, Sichuan University, Chengdu 610065, China)

Abstract

Focusing the over simplification of existing models in simulating river flow evolution process and lack of coordination of hydropower generation and export, this paper proposes a hydropower generation and export coordinated optimal operation model that, at the same time, incorporates dynamic water flow delay by finely modeling the water flow evolution process among cascade hydropower stations within a river basin. Specifically, firstly, a dynamic water flow evolution model is built based on the segmented Muskingum method. By dividing the river into sub-segments and establishing flow evolution equation for individual sub-segments, the model accurately captures the dynamic time delay of water flow. On this basis, integrating cascade hydropower systems and the transmission system, a hydropower generation and export coordinated optimal operation model is proposed. By flexibly adjusting the power export, the model balances local consumption and external transmission of hydropower, enhancing the utilization efficiency of hydropower resources and achieving high economic performance. A case study verified the accuracy of the dynamic water flow evolution model and the effectiveness of the proposed hydropower generation and export coordinated optimal operation model.

Suggested Citation

  • Pai Li & Hui Lu & Lu Nan & Jiayi Liu, 2025. "Coordination of Hydropower Generation and Export Considering River Flow Evolution Process of Cascade Hydropower Systems," Energies, MDPI, vol. 18(15), pages 1-15, July.
    • Handle: RePEc:gam:jeners:v:18:y:2025:i:15:p:3917-:d:1707735
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    References listed on IDEAS

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    1. Wu, Yuqiang & Liao, Shengli & Liu, Benxi & Cheng, Chuntian & Zhao, Hongye & Fang, Zhou & Lu, Jia, 2024. "Short-term load distribution model for cascade giant hydropower stations with complex hydraulic and electrical connections," Renewable Energy, Elsevier, vol. 232(C).
    2. Yuan, Wenlin & Zhang, Shijie & Su, Chengguo & Wu, Yang & Yan, Denghua & Wu, Zening, 2022. "Optimal scheduling of cascade hydropower plants in a portfolio electricity market considering the dynamic water delay," Energy, Elsevier, vol. 252(C).
    3. Jianjian Shen & Chuntian Cheng & Jun Zhang & Jianyu Lu, 2015. "Peak Operation of Cascaded Hydropower Plants Serving Multiple Provinces," Energies, MDPI, vol. 8(10), pages 1-20, October.
    4. Liao, Shengli & Liu, Huan & Liu, Zhanwei & Liu, Benxi & Li, Gang & Li, Shushan, 2021. "Medium-term peak shaving operation of cascade hydropower plants considering water delay time," Renewable Energy, Elsevier, vol. 179(C), pages 406-417.
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