New indices for reliability assessment of water distribution networks

2016 ◽  
Vol 65 (5) ◽  
pp. 384-395 ◽  
Author(s):  
Akbar Shirzad ◽  
Massoud Tabesh
Keyword(s):  
Water Distribution ◽  
Network Reliability ◽  
Unit Length ◽  
Reliability Assessment ◽  
Weighted Average ◽  
Distribution Networks ◽  
Water Distribution Networks ◽  
Main Factors ◽  
Pressure Driven Analysis ◽  
Demand Driven Analysis

This paper presents new indices to evaluate the reliability of water distribution networks (WDNs) usable in the design, planning and management of these networks. Since the pressure-driven analysis (PDA) of WDNs produces more accurate results than the demand-driven analysis, the new indices are proposed based on the PDA. In the proposed measures, nodal pressures, nodal available discharges and the energy loss per unit length of pipes are considered as the main factors influencing the reliability of WDNs. The introduced network reliability index is a combination of two indices named total nodal reliability and total pipe reliability. These indices are equal to the weighted average of all of the nodal and pipe reliabilities, respectively. A sample network is used to evaluate the new proposed index and some of the available indices and to compare their efficiencies in assessing the reliability of WDNs. The results show that the new proposed index is more efficient and outperforms the others. The introduced index is normalized and is independent of the WDN size. This index considers the qualitative aspects of WDNs besides the hydraulic aspects in evaluating reliability.

Reliability Assessment Model for Water Distribution Networks

2020 ◽  
Vol 11 (2) ◽  
pp. 04019059
Author(s):  
Mohammed Alsharqawi ◽  
Tarek Zayed ◽  
Laya Parvizsedghy ◽  
Ahmed Senouci ◽  
Hassan Al-Derham
Keyword(s):  
Water Distribution ◽  
Reliability Assessment ◽  
Distribution Networks ◽  
Assessment Model ◽  
Water Distribution Networks

The emergence and evolution of reliability theory for water distribution networks

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Seyed Ashkan Zarghami ◽  
Indra Gunawan
Keyword(s):  
Literature Review ◽  
Reliability Analysis ◽  
Water Distribution ◽  
Network Reliability ◽  
Academic Research ◽  
Distribution Networks ◽  
Water Distribution Networks ◽  
Future Research ◽  
Content Type ◽  
Analysis Methods

PurposeAs a response to the growing operational and disruptive threats to water distribution networks (WDNs), researchers have developed a vast array of methods for the reliability analysis of WDNs. In order to follow this growing number of methods, this paper reviews and documents in one place the historical developments in the reliability analysis of WDN.Design/methodology/approachA systematic literature review (SLR) is carried out to summarize the state-of-the-art research on reliability analysis of WDNs. In conducting this systemic literature review, the authors adopted an iterative approach to define appropriate keywords, analyze and synthesize data and finalizing the classification results.FindingsFirst, the hydraulic approach to reliability analysis is currently pervasive, and relatively little academic research has addressed the topological reliability analysis of WDNs. Second, in order to provide a comprehensive picture of the network reliability, a different approach that integrates topological and hydraulic attributes seems a more effective method. Third, the conventional reliability analysis methods are only effective for demonstrating a snapshot of these networks at a given point in time. The availability of methods that enable researchers to evaluate the reliability in response to changes in its variables is still a major challenge.Originality/valueThe present paper facilitates future research in the reliability analysis of WDNs by providing a source of references for researchers and water utilities. Further, this article makes a contribution to the literature by offering a roadmap for future reliability analysis of WDNs by reviewing the evolution of the current reliability analysis methods throughout history.

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