Parameter Estimation in Water‐Distribution Systems by Least Squares
Publication: Journal of Water Resources Planning and Management
Volume 120, Issue 4
Abstract
The weighted‐least‐squares method using sensitivity‐analysis technique is proposed for the estimation of parameters in water‐distribution systems. The parameters considered are the Hazen‐Williams coefficients for the pipes. The objective function used is the sum of the weighted squares of the differences between the computed and the observed values of the variables. The weighted‐least‐squares method can elegantly handle multiple loading conditions with mixed types of measurements such as heads and consumptions, different sets and number of measurements for each loading condition, and modifications in the network configuration due to inclusion or exclusion of some pipes affected by valve operations in each loading condition. Uncertainty in parameter estimates can also be obtained. The method is applied for the estimation of parameters in a metropolitan urban water‐distribution system in India.
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Information & Authors
Information
Published In
Journal of Water Resources Planning and Management
Volume 120 • Issue 4 • July 1994
Pages: 405 - 422
Copyright
Copyright © 1994 American Society of Civil Engineers.
History
Received: Jul 17, 1992
Published online: Jul 1, 1994
Published in print: Jul 1994
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