Reliability Analysis of Water‐Distribution Systems

Gupta, Rajesh; Bhave, Pramod R.

doi:10.1061/(asce)0733-9372(1994)120:2(447)

Cited by 106 publications

(48 citation statements)

References 19 publications

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“…A common constraint of the above approaches is that the combination of possible failure scenarios grows exponentially as the network becomes bigger (Berardi et al 2014) together with possible inconsistencies and uncertainties associated with hydraulic simulations (Gupta and Bhave 1994). Trifunović (2012) explores hydraulic properties of the network based on the statistical analysis of common parameters under normal operation and proposed them as indices to assess the resilience of a water network.…”

Section: Introductionmentioning

confidence: 99%

A Graph-Theoretic Framework for Assessing the Resilience of Sectorised Water Distribution Networks

Herrera

Abraham

Stoianov

2016

Water Resour Manage

151

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Water utilities face a challenge in maintaining a good quality of service under a wide range of operational management and failure conditions. Tools for assessing the resilience of water distribution networks are therefore essential for both operational and maintenance optimization. In this paper, a novel graph-theoretic approach for the assessment of resilience for large scale water distribution networks is presented. This is of great importance for the management of large scale water distribution systems, most models containing up to hundreds of thousands of pipes and nodes. The proposed framework is mainly based on quantifying the redundancy and capacity of all possible routes from demand nodes to their supply sources. This approach works well with large network sizes since it does not rely on precise hydraulic simulations, which require complex calibration processes and computation, while remaining meaningful from a physical and a topological point of view. The proposal is also tailored for the analysis of sectorised networks through a novel multiscale method for analysing connectivity, which is successfully tested in operational utility network models made of more than 100,000 nodes and 110,000 pipes.

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Section: Introductionmentioning

confidence: 99%

A Graph-Theoretic Framework for Assessing the Resilience of Sectorised Water Distribution Networks

Herrera

Abraham

Stoianov

2016

Water Resour Manage

151

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“…Such indicators were then studied, improved and implemented [20][21][22][23][24]. Several authors [12,25,26] evaluated reliability by using performance indicators on the basis of the ratio between volumes actually delivered during the evaluation period and the volume required at a given node. A performance indicator relative to pressure that considers the ratio between the minimum pressure value and pressure required was also proposed [27].…”

Section: The Reliability Indicators Implemented In Wdnetxlmentioning

confidence: 99%

Rehabilitation Planning of Water Distribution Network through a Reliability—Based Risk Assessment

D’Ercole

Righetti

Raspati

et al. 2018

Water

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Abstract:The efficient and effective management of existing water distribution systems (WDSs) faces challenges related to aging of infrastructure, population growth, extended urbanization, climate change impacts and environmental pollution. Therefore, there is a need for integrated solutions that support decision makers to plan today potential interventions, considering the possible consequences and variations in mid-and long-term perspectives. This study is a part of a more comprehensive project, where advanced hydraulic analysis of WDS is coupled with a dynamic resources input-output analysis model. The proposed modeling solution provides a robust tool to support planning of intervention actions and can be applied to optimize the performance of a water supply system considering energy consumption and environmental impacts. This paper presents an application of the proposed method in pipe rehabilitation/replacement planning, maximizing the network mechanical reliability and minimizing the risk of unsupplied water demand and pressure deficit evaluated at nodal level, under given economic constraints.

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“…Analytical reliability considers hydraulic behavior with equations relating the various hydraulic parameters (node demand, friction coefficient, nodal pressure, etc) (Xu & Goulter 1997b). Simulation-based reliability is more concerned with estimating demand deficits arising from the network hydraulic behavior during normal and failure time (Gupta & Bhave 1994;Xu & Goulter 1997a;Tanyimboh & Templeman 2000).…”

Section: Reliabilitymentioning

confidence: 99%

“…Volume reliability has also been widely used (Gupta & Bhave 1994;Tanyimboh & Templeman 2000). It is normally defined as the expected (in a probabilistic sense) average fraction of total demand that will be fulfilled.…”

Section: Reliabilitymentioning

confidence: 99%

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Cost and reliability comparison between branched and looped water supply networks

Martínez¹

2009

Journal of Hydroinformatics

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A new design methodology recently introduced for looped networks is now applied to branched networks. The methodology is based on cost analysis minimisation, network mathematical simulation under normal and failure states and reliability estimates. It is capable of obtaining not only an adequate value for the global reliability of a network but also the appropiate total design demand. This paper then presents a deeper insight into the comparison between looped and branched networks by applying the methodology to both types of networks and comparing the results in terms of cost and reliability. Considerations regarding available reliability definitions are also included which seem to favor volume-type definitions in practice. Results provide a rational foundation to reveal the superiority of looped networks over comparable branched networks by applying quantitative cost evaluations.

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Reliability Analysis of Water‐Distribution Systems

Cited by 106 publications

References 19 publications

A Graph-Theoretic Framework for Assessing the Resilience of Sectorised Water Distribution Networks

A Graph-Theoretic Framework for Assessing the Resilience of Sectorised Water Distribution Networks

Rehabilitation Planning of Water Distribution Network through a Reliability—Based Risk Assessment

Cost and reliability comparison between branched and looped water supply networks

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