Calibration of parameters of water supply network model using genetic algorithm

Tomasz Boczar,Norbert Adamikiewicz,Włodzimierz Stanisławski,M Wzorek,A Król,G Królczyk

doi:10.1051/e3sconf/20171902007

Abstract

Computer simulation models of water supply networks are commonly applied in the water industry. As part of the research works, results of which are presented in the paper, OFF-LINE and ON-LINE calibration of water supply network model parameters using two methods was carried out and compared. The network skeleton was developed in the Epanet software. For optimization two types of dependent variables were subjected: the pressure on the node and volume flow in the network section. The first calibration method regards to application of the genetic algorithm, which is a build in plugin - “ Epanet Calibrator ”. The second method was related to the use of function ga , which is implemented in the MATLAB toolbox Genetic Algorithm and Direct Search. The possibilities of application of these algorithms to solve the issue of optimizing the parameters of the created model of water supply network in both cases: OFF-LINE and ON-LINE calibration was examined. An analysis of the effectiveness of the considered algorithms for different values of configuration parameters was performed. Based on the achieved results it was stated that application of the ga algorithm gives higher correlation of the calibrated values to the empirical data.

Highlights

Water supply networks are one of the main components of the technical infrastructure of cities and settlements
The object under the study was the water supply network of Kedzierzyn-Kozle, Poland. It is build from the following elements: two pumping stations, two zonal pumping stations located in Slawiecice and Cisowa, transmission pipelines with valves, junction valves and the water recipients
The system of pipelines consists of buses of a total length of ~153 km and of junction valves of total length of ~74 km

Summary

Introduction

Water supply networks are one of the main components of the technical infrastructure of cities and settlements. The problem is growing in the areas of cities, where as a result of the exploitation of deposits, e.g. coal or calcium, located below the city, the occurrence of the failures is more common. This issue will have an impact after the cessation of mining. Current methods of locating failures in water supply systems use monitoring devices. These methods are, less effective in case of increasingly common PVC and PE pipes [3,4,5]. This paper presents the results of research works dealing with the calibration procedure of the proposed mathematical water supply network

Methodology

Calibration results

Conclusions