Dynamic Optimal Unit Commitment and Loading in Hydropower Systems
Publication: Journal of Water Resources Planning and Management
Volume 129, Issue 5
Abstract
The hydropower unit commitment and loading problem represents a complex decision-making process involving the integrated hourly scheduling of generators in a multiproject hydropower system. Optimal scheduling maximizes basinwide operating efficiency while satisfying power load demands, water demands, reliability constraints, operational restrictions, and security requirements. Often considered as a sequentially static optimization over each operational period, the problem actually embodies a highly dynamic structure when considering realistic operational restrictions on unit commitment and loading. A dynamic programming (DP) optimization model maximizes basinwide operating efficiency subject to (1) plant constraints on total generation requirements, generation shape requirements, and spinning reserve; and (2) operational restrictions on rough zone avoidance, minimum up and down time requirements, and unit outage modes. Application of the DP model to the hydropower system of the Lower Colorado River Basin demonstrates its capabilities for real-time optimal unit scheduling in satisfying complex operational constraints while improving basinwide generation efficiency.
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Information
Published In
Journal of Water Resources Planning and Management
Volume 129 • Issue 5 • September 2003
Pages: 388 - 398
Copyright
Copyright © 2003 American Society of Civil Engineers.
History
Received: Jan 17, 2002
Accepted: Aug 23, 2002
Published online: Aug 15, 2003
Published in print: Sep 2003
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