Optimal Location and Setting of PRVs in WDS for Leakage Minimization

Water loss is an issue that affect Water Distribution Systems (WDSs) very often, especially when aged and high pressure occurs. Pressure reduction valves (PRVs) can be used as devices to reduce as much as possible the water losses within the network. Indeed, for a given number of PRVs, the daily vol...

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Bibliographic Details
Published in:Water resources management 2016-03, Vol.30 (5), p.1803-1817
Main Authors: Covelli, Carmine, Cozzolino, Luca, Cimorelli, Luigi, Della Morte, Renata, Pianese, Domenico
Format: Article
Language:English
Subjects:
algorithms
Atmospheric Sciences
Case studies
Civil Engineering
Control valves
Costs
Distribution
Earth and Environmental Science
Earth Sciences
Environment
Fluid flow
Genetic algorithms
Geotechnical Engineering & Applied Earth Sciences
High pressure
Hydraulics
Hydrogeology
Hydrology/Water Resources
Leakage
Methodology
Modelling
Networks
Optimization
Pipelines
Pressure distribution
Simulation
Statistical analysis
Topology
Valves
Water
Water distribution
Water distribution systems
Water loss
Water resources management
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Summary:Water loss is an issue that affect Water Distribution Systems (WDSs) very often, especially when aged and high pressure occurs. Pressure reduction valves (PRVs) can be used as devices to reduce as much as possible the water losses within the network. Indeed, for a given number of PRVs, the daily volume of water lost from the network can be reduced minimizing the pressure through a proper choice of valve positions as well as their settings. In this paper, a methodology for the optimal number, positioning and setting of PRVs is presented. In the proposed methodology, a genetic algorithm is coupled with a physical modelling of leakage from joints and a simplified and yet realistic hydraulic simulation of the WDS. The proposed methodology is demonstrated using two WDSs examples. Comparisons with a more extreme and complicated hydraulic modelling, already proposed by authors in previous work, are also performed in the first case study in order to validate the proposed methodology. These comparisons demonstrate that the methodology proposed in this work performs fairly well when compared to similar approach that uses a more sophisticated hydraulic model. As a consequence, it revealed to be a good tool for the optimal positioning and sizing of PRVs within WDS aimed at reducing the background leakages even when the WDS is characterized by complex geometry and topology.
ISSN:0920-4741
1573-1650
DOI:10.1007/s11269-016-1252-7