Optimal pumping from Palmela water supply wells (Portugal) using simulated annealing

Fragoso, Teresa; Cunha, Mariada Conceição; Lobo-Ferreira, JoãoP.

Optimal pumping from Palmela water supply wells (Portugal) using simulated annealing | Optimum de pompage dans les puits d’alimentation de Palmela (Portugal) par algorithme répétitif Bombeo óptimo de los pozos de abastecimiento de agua de Pamela (Portugal) usando la técnica de temple simulado 利用模拟退火算法对葡萄牙Palmela供水井进行抽水优化 Optimização de extracções de águas subterrâneas no concelho de Palmela (Portugal) usando o método do recozimento simulado

2009

Fragoso, Teresa | Cunha, Mariada Conceição | Lobo-Ferreira, JoãoP.

Aquifer systems are an important part of an integrated water resources management plan as foreseen in the European Union’s Water Framework Directive (2000). The sustainable development of these systems demands the use of all available techniques capable of handling the multidisciplinary features of the problems involved. The formulation and resolution of an optimization model is described for a planning and management problem based on the Palmela aquifer (Portugal), developed to supply a given number of demand centres. This problem is solved using one of the latest optimization techniques, the simulated annealing heuristic method, designed to find the optimal solutions while avoiding falling into local optimums. The solution obtained, providing the wells location and the corresponding pumped flows to supply each centre, are analysed taking into account the objective function components and the constraints. It was found that the operation cost is the biggest share of the final cost, and the choice of wells is greatly affected by this fact. Another conclusion is that the solution takes advantage of the economies of scale, that is, it points toward drilling a large capacity well even if this increases the investment cost, rather than drilling several wells, which together will increase the operation costs.

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