Water Distribution Systems Reliability under Extended-Period Simulations
Publication: Journal of Water Resources Planning and Management
Volume 146, Issue 8
Abstract
Water distribution systems reliability has typically been studied using single-period simulations of the hydraulic behavior of the system, due to high computational requirements. The aim of this work was to develop and test a framework for the evaluation of mechanical reliability, hydraulic reliability, and firefighting reliability under extended-period simulations. Four functionality functions were proposed to quantify the serviceability of the system under the perturbation scenarios. The functions were tested in five case studies based on real-world networks and compared with the previously developed mechanical reliability estimator (MRE) and hydraulic reliability estimator (HRE), as well as with similar definitions for single-period simulation. Results showed that both MRE and HRE consistently correlate with the supply/demand ratio functionality, and are easy to compute even in optimization routines. Comparison results with single-period definitions of functionality showed that, on average, evaluating hydraulic conditions at the peak hour works is a good estimation of the extended-period behavior, but in some cases, discrepancies up to 50% can be found.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
The authors thank the Natural Sciences and Engineering Research Council of Canada for financial support of this work.
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Published In
Journal of Water Resources Planning and Management
Volume 146 • Issue 8 • August 2020
Copyright
©2020 American Society of Civil Engineers.
History
Received: Jun 14, 2019
Accepted: Feb 18, 2020
Published online: May 28, 2020
Published in print: Aug 1, 2020
Discussion open until: Oct 28, 2020
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