Identifcation of the hydraulic model from operational measurements for supervisory pressure control

Date
2009-05-17
Authors
Li, Ping
Postlethwaite, I.
Prempain, Emmanuel
Ulanicki, Bogumil
Patel, Ridwan
Journal Title
Journal ISSN
ISSN
DOI
Volume Title
Publisher
ASCE
Peer reviewed
Yes
Abstract
The operational pressure control is a cost-e®ective way to leakage reduction and many pressure control methods and algorithms have been developed. Whilst the pres- sure control algorithm is model-based, the hydraulic model of the considered distribu- tion network is not always available. Therefore, this paper will focus on the development of an aggregated hydraulic model of the network considered, in particular, identi¯ca- tion of a leakage enhanced model using the operational measurements or the available historical data. This will enable a pressure optimisation algorithm to calculate the optimal pressure schedules for the implementation of a pressure control scheme. The identi¯cation problem is formulated as a parameter estimation problem in this paper and a least-square based method is derived for estimating the parameters in the model. A case study provided by a UK water company is performed to illustrate the use of the method and the identi¯cation results from real operational data are presented.
Description
Keywords
hydraulic model, measurements, parameter estimation
Citation
Li, P., Prempain, E., Postlethwaite, I. and Ulanicki, B. (2009) Identification of the hydraulic model from operational measurements for supervisory pressure control. World Environmental & Water Resources Congress 2009, May 17-21 in Kansas City, Missouri.
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