The Application of optimal management system of water distribution networks in the calibration process

Document Type : Original Article

Authors

1 Ph.D Student, Department of Water Engineering, College of Agriculture, University of Urmia, Urmia, Iran

2 Associate Professor, Department of Water Engineering, College of Agriculture, University of Urmia, Urmia, Iran

3 Associate Professor, Department of Water Engineering, College of Agriculture, Ferdowsi University of Masshad, Mashhad, Iran

4 Senior Lecturer, School of Computing and Engineering, University of West London, London W5 5RF, U.K.

Abstract

A hydraulic model of water distribution network is successful and reliable if it can simulate real condition by high accuracy. In this paper introduces a new web-based system which called optimal management system of water distribution networks with the goal of calibration of water distribution network based on simple modified particle swarm optimization (SMPSO) in a simple and user friendly way for the experts of the water and wastewater companies. The calibration process in this web-based system is aimed to minimize Mean Absolute Percentage Error criterion (MAPE) between simulated and observed pressures with the Hazen- Williams roughness coefficients as the decision variables. To achieve this purpose, firstly the SMPSO method is investigated to calibrate a benchmark network which the results showed MAPE average has reduced to 0.425, 2.857 and 0.306 percent in the maximum, minimum and fire demand conditions respectively and has increased 0.186 percent just in the normal condition. It is verify that the SMPSO algorithm performs better than the GA. Then the system is used to calculate a real case water network in the normal, maximum, minimum and different demand conditions during the 24 hours which in these condition MAPE values have decreased 5.82,6.20,5.21 and 5.95 respectively, when compared with calibration obtained by consulting company.

Keywords


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