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Study on Reservoir Operation Model Based on Ecological Flow Calculation

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Abstract

To make the formulation of the ecological release countermeasures of the reservoir adapt to the flood and dry water coming from the river and the ecological flow guarantee objectives of the Ministry of Water Resources, the ecological regulation release countermeasures model of the reservoir is studied. Taking Baishi Reservoir on the Daling River as an example, the ecological flow calculation results of Tennant method, Texas method and the ecological flow guarantee target (fixed value method) of the Ministry of Water Resources are selected for ecological dispatching to build an ecological dispatching model with optimal water supply, power generation and ecological coordination. There is no requirement to restore the flood limit water level at the end of the dispatching period. The average annual water supply shortage of the three methods are 8.20%, 20.21% and 11.62% less than the requirement to restore the flood limit water level. The average ecological water supply shortage are 16.39%, 14.40% and 10.96% less than the requirement to restore the flood limit water level. The average power generation of the fixed value method and the Texas method are 0.90% and 3.46% less than the requirement to restore the flood limit water level. The average power generation of the Tennant method is 3.73% more than the requirement to restore the flood limit water level. There is no requirement to restore the flood limit water level at the end of the dispatching period. The average annual water supply shortage of the reservoir by Tennant method are 19.91% and 10.69% lower than that by the constant value method and Texas method, the average non-flood season water shortage is 49.47% and 21.17% lower, the average annual power generation is 4.25% and 5.77% higher, and the average flood season power generation is 69.22% and 9.20% higher. At the end of the operation period, the reservoir water level does not need to restore the flood limit water level as much as possible, which can improve the utilization rate of the reservoir water resources. The operation mode of ecological water demand calculated by Tennant method can effectively combine the characteristics of incoming water to achieve the optimization of water supply, power generation and ecology.

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Funding

Key Scientific and Technological Problems in Henan Province (No:232102321140), Shandong Water Transfer Project Operation and Maintenance Center Cooperation Project (No: 37000000025002920210100 001), Simulation of Economic and Ecological Effects of National Water Network and Study on Its Sustainability (No: 2021YFC3200205), the Project of key science and technology of the Henan province (No: 202102310259), Henan province university scientific and technological innovation team (No: 18IRTSTHN009).

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Authors and Affiliations

  1. College of Water Resources, Henan Key Laboratory of Water Resources Conservation and Intensive Utilization in the Yellow River Basin, North China University of Water Resources and Electric Power, Zhengzhou, 450046, People’s Republic of China

    Guanjun Lei & Wenchuan Wang

  2. Water Resources Research Institute, China Institute of Water Resources and Hydropower Research, State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, Beijing, 100038, People’s Republic of China

    Junxian Yin, Changshun Liu & Hao Wang

Authors
  1. Guanjun Lei
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  2. Junxian Yin
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  3. Wenchuan Wang
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  4. Changshun Liu
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  5. Hao Wang
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Contributions

Guanjun Lei: Conceptualization, Methodology, Writing-original draft. Junxian Yin: Investigation, Writing-original draft preparation. Wenchuan Wang: Formal analysis and data collection. Changshun Liu: Writing and editing-original draft. Hao Wang: Formal analysis.

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Correspondence to Guanjun Lei.

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Lei, G., Yin, J., Wang, W. et al. Study on Reservoir Operation Model Based on Ecological Flow Calculation. Water Resour Manage 37, 3543–3562 (2023). https://doi.org/10.1007/s11269-023-03513-0

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