Network analysis, control valve placement and optimal control of flow velocity for self-cleaning water distribution systems

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Title: Network analysis, control valve placement and optimal control of flow velocity for self-cleaning water distribution systems
Author(s): Abraham, E
Blokker, EJM
Stoiano, I
Item Type: Conference Paper
Abstract: In this paper, we consider the proactive control of flow velocities to maximise the self-cleaning capacity of the drinking water distribution systems under normal operations both through a change of the network topology and through an optimal control of pressure reducing valve (PRV) settings. Inspired by line outage flow distribution in electrical networks, we show how a fast network graph analysis of link closures can be used to estimate the potential changes in flow velocities, which are then used to determine the most favourable pipes for closure. Where closing of pipes cannot be used because of other conflicting objectives, we consider the optimal control of PRVs to maximise self-cleaning at peak demand periods. We formulate a novel optimisation problem to maximise the network operations for increased self-cleaning capacity, while satisfying hydraulic and regulatory pressure constraints at demand nodes. A new smooth objective function approximation for cleaning capacity of the network is proposed along with a scalable sequential convex programming method to solve the resulting valve optimization problems. We use a published benchmark network as a case study to show the efficacy of these new approaches.
Publication Date: 9-May-2017
Date of Acceptance: 18-Mar-2016
URI: http://hdl.handle.net/10044/1/38828
DOI: https://dx.doi.org/10.1016/j.proeng.2017.03.272
ISSN: 1877-7058
Publisher: Elsevier
Start Page: 576
End Page: 583
Journal / Book Title: Procedia Engineering
Volume: 186
Conference Name: 18th Conference on Water Distribution System Analysis, WDSA2016
Copyright Statement: © 2016 Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license. (http://creativecommons.org/licenses/by-nc-nd/4.0/
Keywords: MD Multidisciplinary
Publication Status: Published
Start Date: 2016-07-24
Finish Date: 2016-07-28
Conference Place: Cartagena, Colombia
Appears in Collections:Faculty of Engineering



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