Identification of Unintended Isolation Segments in Water Distribution Networks Using a Link-by-Link Adjacency Matrix
Publication: Journal of Water Resources Planning and Management
Volume 147, Issue 2
Abstract
In water distribution networks (WDNs), pipe failure is the most frequent type of equipment malfunction, resulting in water supply suspension. To determine the water suspension area and to properly plan restoration work, the accurate identification of isolated subsystems with respect to valve locations is critical. The water suspension area can be divided into intended and unintended isolations, depending on the valve layout. This technical note discusses the conventional method of searching the valve-controlled isolation areas and specifically examines the weakness of the unintended isolation (UI) search algorithm that uses a node-by-node adjacency matrix. In this study, we propose a new search algorithm using a link-by-link adjacency matrix to identify the UI segments. Demonstrations on branch and loop networks show that the new approach correctly identifies the UI in various operating conditions. The proposed method is expected to replace the conventional method and can be applied in various valve-controlled segment analyses, such as optimal valve placement, real-time valve control for dynamic WDN operation, and postaccident pipe recovery planning.
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Data Availability Statement
All data and models that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
This research was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. NRF-2020R1A2C2009517) (MSIT: Ministry of Science and ICT).
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Published In
Journal of Water Resources Planning and Management
Volume 147 • Issue 2 • February 2021
Copyright
© 2020 American Society of Civil Engineers.
History
Received: Feb 18, 2020
Accepted: Sep 4, 2020
Published online: Dec 12, 2020
Published in print: Feb 1, 2021
Discussion open until: May 12, 2021
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