Journal
OPTIMIZATION AND ENGINEERING
Volume 10, Issue 1, Pages 43-73Publisher
SPRINGER
DOI: 10.1007/s11081-008-9040-8
Keywords
Drinking water supply; Distribution network; Minimum cost operative planning; Continuous time model; Mixed integer model; Nonlinear programming model
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The topic of this paper is minimum cost operative planning of pressurized water supply networks over a finite horizon and under reliable demand forecast. Since this is a very hard problem, it is desirable to employ sophisticated mathematical algorithms, which in turn calls for carefully designed models with suitable properties. The paper develops a nonlinear mixed integer model and a nonlinear programming model with favorable properties for gradient-based optimization methods, based on smooth component models for the network elements. In combination with further nonlinear programming techniques (Burgschweiger et al. in ZIB Report ZR-05-31, Zuse Institute Berlin, 2005), practically satisfactory near-optimum solutions even for large networks can be generated in acceptable time using standard optimization software on a PC workstation. Such an optimization system is in operation at Berliner Wasserbetriebe.
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