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Accueil du site → Master → Pays Bas → 2009 → Management of reservoirs in an operational forecasting environment : the case of the Alberche basin in Spain

UNESCO-IHE Institute for Water Education, Delft (2009)

Management of reservoirs in an operational forecasting environment : the case of the Alberche basin in Spain

Jaimes, J.A.

Titre : Management of reservoirs in an operational forecasting environment : the case of the Alberche basin in Spain

Auteur : Jaimes, J.A.

Université de soutenance : UNESCO-IHE Institute for Water Education, Delft

Grade : Master of Science (MS) 2009

Résumé
The coordinated operation of a system of multiple reservoirs for efficient management of available water to maximize the net benefit or minimize the total deficits of the system is a complex decision-making process. The decision policies involve many variables, objectives and considerable risk and uncertainty. They must satisfy various constraints on system operation while maximizing releases for various purposes orminimizing spills and losses. Ideally, the reservoirs in a system should be designed and operated together to maximize net benefits. This aim is using optimization approaches and implementing a real-time forecasting system to predict future inflows to the system and plan the operation of the reservoirs accordingly. The aim of this project is to develop a framework of real-life application for the management of reservoirs in an operational forecasting environment, which utilizes the maximum available information. The framework developed will be implemented in the operation of the four reservoirs in the Alberche basin in Spain, which have beenin operation for several years.A MIKE-11 hydrologic rainfall-runoff module (NAM) is used, to generate simulatedinflows into the reservoirs, then a Sobek 1D hydrodynamic model is used with theobjective to calculate discharges and water levels at Escalona because of its flood problems.Reservoir model (RtcModule-Delft-FEWS) is used to analyze several simulationscenarios using current operating rules with observe and simulated NAM inflows,after that within forecasting environment three more scenarios are analyzed, these areforecast using optimization, the first two use heuristic rules with observe and NAMinflows, while the last optimization scenario was made for the purpose to comparewith the heuristic rules with observe inflows.The optimization is formulated in terms of determining values for a set of decisionvariables, which seeks to maximize the energy production and minimize floodingproblems downstream of Picadas. Two events are analyzed and the results applyingheuristic rules show an improvement using observe inflows, on the contraryoptimizing with NAM inflows shows the influence of the uncertainty using thehydrological model.

Sujets  : reservoir operations simulation models real time control forecasting river basins case studies Spain

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