Research on Multiobjective Optimal Scheduling of Reservoir Based on Ecological Flow-Process Level
Publication: Journal of Water Resources Planning and Management
Volume 149, Issue 11
Abstract
Frequent changes in the hydrological regime of rivers downstream of dams due to reservoir scheduling would lead to problems such as ecological degradation. This study proposes the ecological flow-process level (EFPL), a quantitative ecological benefits indicator of flow processes, to reduce hydrological regime variation. The EFPL considers dynamic evaluation criteria for ecological flows at different periods and the influence of excessive flow. Based on the EFPL, a multiobjective ecological scheduling model was developed to maximize EFPL and power generation. To validate the effectiveness of the proposed method, a case study on the ecological scheduling of the Hongjiadu hydropower station was conducted. The resulting scheduling scheme showed a significant reduction of 33.21% in the maximum difference between the inflow and discharge processes compared to the original scheme. The result demonstrates that the proposed method can effectively reduce the hydropower-induced hydrological regime variation. The superiority of the EFPL indicator is further supported through comparisons with other ecological indicators. The result shows that the EFPL-based scheduling scheme has relatively good indicator values compared to other schemes.
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Data Availability Statement
All data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
This research was partially funded by the National Key R&D Program of China (2019YFE0105200). In addition, this research was also supported by the National Natural Science Foundation of China (52179012). We are grateful for the funding. Also, we are grateful to the reviewers for providing useful comments which have improved the current version of the paper significantly.
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Information
Published In
Journal of Water Resources Planning and Management
Volume 149 • Issue 11 • November 2023
Copyright
© 2023 American Society of Civil Engineers.
History
Received: Dec 4, 2022
Accepted: Jun 9, 2023
Published online: Aug 31, 2023
Published in print: Nov 1, 2023
Discussion open until: Jan 31, 2024
ASCE Technical Topics:
- Case studies
- Chemical degradation
- Chemical processes
- Chemistry
- Dams
- Ecosystems
- Engineering fundamentals
- Environmental engineering
- Flow (fluid dynamics)
- Fluid dynamics
- Fluid mechanics
- Geotechnical engineering
- Hydraulic engineering
- Hydraulic structures
- Hydrologic engineering
- Hydrology
- Methodology (by type)
- Research methods (by type)
- Reservoirs
- River engineering
- Rivers and streams
- Water and water resources
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