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Evaluation of Power Generation Efficiency of Cascade Hydropower Plants: A Case Study

Author

Listed:
  • Ying Zheng

    (State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China)

  • Xudong Fu

    (State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China)

  • Jiahua Wei

    (State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China)

Abstract

Effective utilization of scarce water resources has presented a significant challenge to respond to the needs created by rapid economic growth in China. In this study, the efficiency of the joint operation of the Three Gorges and Gezhouba cascade hydropower plants in terms of power generation was evaluated on the basis of a precise simulation-optimization technique. The joint operation conditions of the Three Gorges and Gezhouba hydropower plants between 2004 and 2010 were utilized in this research in order to investigate the major factors that could affect power output of the cascade complex. The results showed that the current power output of the Three Gorges and Gezhouba cascade complex had already reached around 90% of the maximum theoretical value. Compared to other influencing factors evaluated in this study, the accuracy of hydrological forecasts and flood control levels can have significant impact on the power generating efficiency, whereas the navigation has a minor influence. This research provides a solid quantitative-based methodology to assess the operation efficiency of cascade hydropower plants, and more importantly, proposes potential methods that could improve the operation efficiency of cascade hydropower plants.

Suggested Citation

  • Ying Zheng & Xudong Fu & Jiahua Wei, 2013. "Evaluation of Power Generation Efficiency of Cascade Hydropower Plants: A Case Study," Energies, MDPI, vol. 6(2), pages 1-13, February.
    • Handle: RePEc:gam:jeners:v:6:y:2013:i:2:p:1165-1177:d:23756
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    References listed on IDEAS

    as
    1. Manfred Lenzen, 2010. "Current State of Development of Electricity-Generating Technologies: A Literature Review," Energies, MDPI, vol. 3(3), pages 1-130, March.
    2. Shenglian Guo & Jionghong Chen & Yu Li & Pan Liu & Tianyuan Li, 2011. "Joint Operation of the Multi-Reservoir System of the Three Gorges and the Qingjiang Cascade Reservoirs," Energies, MDPI, vol. 4(7), pages 1-15, July.
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    Cited by:

    1. Shang, Yizi & Lu, Shibao & Ye, Yuntao & Liu, Ronghua & Shang, Ling & Liu, Chunna & Meng, Xianyong & Li, Xiaofei & Fan, Qixiang, 2018. "China’ energy-water nexus: Hydropower generation potential of joint operation of the Three Gorges and Qingjiang cascade reservoirs," Energy, Elsevier, vol. 142(C), pages 14-32.
    2. Perica Ilak & Slavko Krajcar & Ivan Rajšl & Marko Delimar, 2014. "Pricing Energy and Ancillary Services in a Day-Ahead Market for a Price-Taker Hydro Generating Company Using a Risk-Constrained Approach," Energies, MDPI, vol. 7(4), pages 1-26, April.

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