Long-Term Equilibrium Operational Plan for Hydro-PV Hybrid Power System Considering Benefits, Stability, and Tolerance
Publication: Journal of Water Resources Planning and Management
Volume 146, Issue 8
Abstract
Due to the volatility, intermittency and, randomness of photovoltaic (PV) power output, hydropower is utilized as a complementary power source. The largest grid-connected hydro-PV power station, the Longyangxia project, is operational and located in northwestern China. The annual power station operational plan assists in making appropriate annual electricity purchasing and sales contracts and in economically benefiting the enterprise. Focusing on the Longyangxia project, this study proposes using a multiobjective optimization model to make a long-term equilibrium operational plan for a hydro-PV power system while simultaneously considering the benefits, stability, and tolerance of the power grid. The Non-dominated Sorting Genetic Algorithm version II (NSGA-II) is adopted to optimize the model, and the Pareto fronts for different hydrological years are presented. The results demonstrate the competitive relationships between the objectives, but there are distinct points where the relationships are more in line with one another. The inflection points are identified, based on the analysis, as the recommended solutions for operating the hydro-PV power system, and the corresponding reservoir operational schemes are also presented.
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Data Availability Statement
The air temperature and daily solar radiation data used in this study were provided by NASA. The river flow data used were provided by the Yellow River Conservancy Commission of the Ministry of Water Resources. The models generated during the study are available from the corresponding author by request.
Acknowledgments
This research was supported by the National Natural Science Foundation of China (91847302, 51879137, 51979276).
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Published In
Journal of Water Resources Planning and Management
Volume 146 • Issue 8 • August 2020
Copyright
©2020 American Society of Civil Engineers.
History
Received: Apr 17, 2019
Accepted: Feb 10, 2020
Published online: Jun 10, 2020
Published in print: Aug 1, 2020
Discussion open until: Nov 10, 2020
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