Analysis and Optimization of Systems pp 987-999 | Cite as
Optimization of a multi-reservoir water network using a conjugate gradient technique. A case study
Abstract
Water distribution systems generally consist of a number of sources of supply from which water is pumped to storage reservoirs to meet demands at consumer nodes through interconnected pipeline networks. Pressure levels and water transfers between different zones of a network are governed by control elements such as pumps, valves or turbines, which may be operated from a central dispatch. Operation costs are primarily related to the supply and treatment costs from the different sources and to the pumping energy expenses which depend on variable electricity tariffs. The optimization of the operation of such systems seeks to derive, ahead in time, the best strategies for the control elements, in order to minimize the overall costs for an operation period, while keeping a satisfactory service to consumers. The optimization methods applicable to this kind of problem must cater for high dimensionality as well as constraints on both states and controls. This work deals with the development of a programme for optimization of the operation in the network of Barcelona, through the use of a projected conjugate gradient method. Firstly, the characteristics of the real system are described and the modelling assumptions are summarized. Then, the optimization method is reported and the results of its application to the real system are presented.
Keywords
Control Element Water Distribution System Time Stage Satisfactory Service Penalty CoefficientPreview
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