La Houille Blanche
Number 6, Octobre 1999
|Page(s)||15 - 24|
|Published online||01 August 2009|
Les modèles en régimes permanent et transitoire : des outils indispensables pour concevoir, optimiser la gestion et protéger les installations de production et de distribution d'eau
Models in steady state and transient conditions: tools for designing, management optimizing and protecting water production and distribution installations
Compagnie Générale des Eaux
2 Syndicat des Eaux d'Ile de France
For a number of years, Water Companies have used mathematical models to simulate the behaviour of their distribution systems. At first, these tools were used to locate and design new facilities. These tools have been significantly enhanced in order to meet new requirements from project and operation managers as they are confronted with more and more complex water distribution networks and too often face antagonistics constraints: safety of water supplies on the one hand and quality of the distributed water on the other hand.
This paper presents, through some well selected examples, two powerful software: the Stoner Workstation Service (SWS) for analysis in steady state conditions and FLOWMASTER for transient analysis. These tools have been successfuly used on the very large water distribution network of the Syndicat des Eaux d'Ile de France (SEDIF) which serves approximately 4,000,000 inhabitants around Paris (France), in order to:
- resolve optimisation problems of resident time,
- determine operating strategies and pump scheduling when large diameter pipes are out of operation,
- design and optimize protection devices against waterhammer. It is important to highlight that the accuracy and reliability of the values calculated by these models have been significantly increased to the point that these tools now allow to analyse the operation of a system in emergency and maintenance conditions and to perform sensitivity analysis.
© Société Hydrotechnique de France, 1999