Optimal Multiobjective Scheduling of Hydropower Stations in Day-Ahead Electricity Market: Considering Ecological Benefits
Publication: Journal of Water Resources Planning and Management
Volume 149, Issue 9
Abstract
At present, most research on the optimal scheduling of hydropower stations in the day-ahead electricity market focuses on the optimal power generation benefit, which does not consider the ecological impact of the generated discharge flow on downstream rivers. To address this situation, the ecological impact of electricity markets on rivers downstream of annually regulated hydropower stations is studied, and adjustment methods for traditional scheduling methods are proposed to achieve better ecological benefits. To this end, a multitimescale nested forecasting scheduling model is proposed for simulating hydropower station scheduling. In addition, the ecological flow index of the distribution flow method, an easy-to-implement ecological indicator model, was used to quantify the ecological benefits of discharge flows. A hydropower station on the upper course of the Lancang River in China was used to analyze the electricity market’s impact on downstream river ecology. The results show that under the optimal power generation benefit scheme, the ecological benefits are influenced not only by electricity price characteristics but also by multitimescale nested scheduling. Based on an analysis of these two factors, the general rules for the ecological benefits of rivers downstream of annually regulated hydropower stations in the day-ahead electricity market are summarized. In addition, the relationship between power generation and ecological benefits is analyzed for various schemes in a multiobjective scheduling problem framework. Finally, adjustment methods for traditional scheduling methods are proposed to achieve better ecological benefits.
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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 study was part of the research accomplishment of the National Key R&D Program of China (2019YFE0105200). It was supported by the Water Conservancy Technology Project of Hunan Province (2016194-21). We are grateful for this funding. We are also grateful to the reviewers for their useful comments that significantly improved the current version of this paper.
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Information & Authors
Information
Published In
Journal of Water Resources Planning and Management
Volume 149 • Issue 9 • September 2023
Copyright
© 2023 American Society of Civil Engineers.
History
Received: Oct 11, 2022
Accepted: Mar 16, 2023
Published online: Jul 7, 2023
Published in print: Sep 1, 2023
Discussion open until: Dec 7, 2023
ASCE Technical Topics:
- Business management
- Ecosystems
- Electric power
- Energy engineering
- Energy infrastructure
- Energy sources (by type)
- Environmental engineering
- Flow (fluid dynamics)
- Fluid dynamics
- Fluid mechanics
- Hydro power
- Hydrologic engineering
- Infrastructure
- Lifeline systems
- Power plants
- Practice and Profession
- Renewable energy
- River engineering
- River flow
- Rivers and streams
- Water and water resources
- Water discharge
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