Um modelo de otimização multiobjetivo para análise de sistemas de recursos hídricos.

Abstract

It is common to find descriptions of optimization models to analyze water resources systems at corresponding literature, but most of them present model approximations that limit their use, when analyzing complex systems of reservoirs. Therefore, this work is concerned with the development of an optimization model to couple with an integrated analysis of reservoirs and irrigated perimeters, among other water uses, system targeting the establishment of multi-objective optimal operational policies for water allocation to multiple users. The nonlinear behavior of hydraulic components were implemented and solved via an iterative process, through the use of sequential linear programming. This model was applied at the study of two reservoirs system, Catolé II and Poço Redondo, which are connected in series at the Piancó river basin. The system’s behavior was analyzed for five established objectives (to meet water requirements of human supply, ecological river flow, reservoir target storage volume, net profit and labor required for agricultural activities) and three hydro-climatic scenarios (dry, normal and rainy) for a time span of 1 and 5 years. The results have shown that the model is efficient at the selection of multi-objective optimal operation policies for water allocation, according to established objectives and constraints.