Quarter-Hourly Operation of Hydropower Reservoirs with Pumped Storage Plants
Publication: Journal of Water Resources Planning and Management
Volume 138, Issue 1
Abstract
This paper formulates a short-term operation problem to determine the optimal quarter-hourly generation schedules of multiple hydropower reservoirs with pumped-storage plants. The model is a comprehensive one that incorporates the plant-based operating zones (PBOZ), the upper and lower bounds on hydrowide power, the hydraulic coupling, and the requirements for generating power and releasing water with a fluctuation tolerance. A new procedure that includes three key techniques makes the problem easier to solve. First, the original problem is temporally decomposed into several quarter-hourly reservoir operation subproblems by dividing the planning horizon into subhorizons. Second, the plant-based operating zones that are integer variables are separately determined with dynamic programming (DP) after solving an hourly reservoir operation problem, which also derives a target-guiding trajectory for the subproblems. Third, iteratively linearizing the constraints simplifies the problems and having nonlinear objective functions guarantees the convergence of the procedure. As part of the software developed for Wuling Power Cooperation, Ltd., the present model and procedure are practical and efficient in aiding users in operating the reservoirs and scheduling the hydropower generation.
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Acknowledgments
This work was supported by the National Natural Science Foundation of China under Grant NNSFC50909044 and sponsored by the Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry. Special appreciation is given to senior engineers Zuoping Wu and Luzhang Kuang, who took the time to test, verify, and suggest modifications and improvements to make the program more useful to their works. The writers also appreciate the help from Mr. David Loo with improving he article's English style and grammar and acknowledge ASCE’s anonymous reviewers for their helpful suggestions.
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Information
Published In
Journal of Water Resources Planning and Management
Volume 138 • Issue 1 • January 2012
Pages: 13 - 23
Copyright
© 2012 American Society of Civil Engineers.
History
Received: Dec 26, 2009
Accepted: Jan 14, 2011
Published online: Jan 17, 2011
Published in print: Jan 1, 2012
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