Multi Objective Approach For Leakage Reduction
In Water Distribution Systems
Author(s)
R. Magini, I. Pallavicini & D. Verde
Abstract
This paper faces the problem of reducing leakages in water distribution systems
(WDS) through dynamic heads control with pressure reduction valves (PRV). To
achieve this aim a multi-objective optimization approach is followed for the
location of control valves and for their setting during different working
conditions. In particular, the objectives to be achieved are: 1) to minimize the
leakages over all of the network, 2) to minimize the investment costs for the
control devices. The objectives must be satisfied considering the variability of
the nodal water demand. For a more realistic simulation of the WDS
performance the implementation of a fully pressure-dependent leakage
specification is required. The multi-objective optimization problem is tackled
using a MOGA (Multi-Objective Genetic Algorithm) with a Pareto based
approach. The hydraulic modelling of the network is performed with the
software EPANET2. The nodal demands are considered to be uncertain input
parameters and the most robust solution is also found. The procedure is here
applied to the WDS of a small town not far from Rome afflicted by heavy losses.
A reduction of about 50% of initial water losses is achieved.
Keywords: water distribution systems, leakage reduction, pressure control,
multi objective optimization, genetic algorithms.
1 Introduction
Nowadays the problem of water losses control in WDS is more and more
pressing owing to the growth of population, the increasing of water
consumptions and at the same time because of the deterioration and the reduction
of available drinkable water resources as a consequence of pollution and climate
changes. Leakages in urban water networks can be a very high percentage of the
Keywords
water distribution systems, leakage reduction, pressure control,
multi objective optimization, genetic algorithms.
Related Book
Other papers in this volume
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