Water Distribution System Classification Using System Characteristics and Graph-Theory Metrics

Hwang, Hwee; Lansey, Kevin

doi:10.1061/(asce)wr.1943-5452.0000850

Cited by 51 publications

(30 citation statements)

References 35 publications

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“…EXNET), the topology of the network is only partially representative of system operation, since the hydraulic conditions may significantly change as a consequence of pipe failure and result in local effects which are hard to predict without hydraulic modelling. Additional efforts are needed to support a more effective and reliable implementation of property-based approaches in case of failure (Hwang andLansey 2017, Shin et al 2018). As the GRA implementation suggests, evaluation of hydraulic system performance is essential for comprehensive resilience analysis of complex WDNs and can provide additional information with respect to the effects of multiple pipe failures.…”

Section: Discussionmentioning

confidence: 99%

Water Distribution Networks Resilience Analysis: a Comparison between Graph Theory-Based Approaches and Global Resilience Analysis

Pagano

Sweetapple

Farmani

et al. 2019

Water Resour Manage

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The structure and connectivity of infrastructure systems such as water distribution networks (WDNs) affect their reliability, efficiency and resilience. Suitable techniques are required to understand the potential impacts of system failure(s), which can result from internal (e.g. water hammer) or external (e.g. natural hazards) threats. This paper aims to compare two such techniques: Graph Theory (GT) and Global Resilience Analysis (GRA). These are applied to a real network -L'Aquila (central Italy) -and two benchmark networks -D-Town and EXNET.GT-based metrics focus on the topology of WDNs, while GRA provides a performance-based measure of a system's resilience to a given system failure mode. Both methods provide information on the response of WDNs to pipe failure, but have different data requirements and thus different computational costs and precision. The results show that although GT measures provide considerable insight with respect to global WDN behavior and characteristics, performance-based analyses such as GRA (which provide detailed information on supply failure duration and magnitude) are crucial to better understand the local response of WDNs to pipe failure. Indeed, particularly for complex networks, topological characteristics may not be fully representative of hydraulic performances and pipe failure impacts.

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Section: Discussionmentioning

confidence: 99%

Water Distribution Networks Resilience Analysis: a Comparison between Graph Theory-Based Approaches and Global Resilience Analysis

Pagano

Sweetapple

Farmani

et al. 2019

Water Resour Manage

View full text Add to dashboard Cite

show abstract

“…A WDS can be modeled as a simplified system with edges and demand nodes. A WDS can be defined as an undirected graph Z(N, E) having a set of N nodes and a set of E edges [50]. In the graph structure, pipes, control valves, and pumps are denoted as edges in accordance with the general terms used for WDS, while demand points, revisors, and tanks are denoted as nodes [51].…”

Section: Topological Validation Processmentioning

confidence: 99%

An Integrated BIM–GIS Method for Planning of Water Distribution System

Zhao

Liu

Mbachu

2019

IJGI

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An important function of a water distribution system (WDS) is to supply drinking water to each demand point using a pipe network that has minimal impact on the surroundings. To produce a reliable WDS, planning usually requires a significant amount of geo-spatial information. Current planning practices for pipeline systems, which gather geographic information based on maps, are time-consuming and cumbersome. With the rapid developments in computer and information technology, it is necessary to propose a new WDS planning method that enhances the current planning practices and facilitates the decision-making process. The proposed method allows project information in building information modeling (BIM) to be incorporated into a geographic information system (GIS) model, using semantic mapping to incorporate WDS project data and geo-spatial information to facilitate the WDS planning process. Moreover, a 3D visualization model of the proposed WDS project and its surroundings is provided. In addition, topological rules are set to identify any conflicts between the WDS project and its surroundings. A real WDS project was used to validate the method. The proposed method can help project participants better understand the WDS project and its surroundings and identify any errors in the planning process, thus improving sustainable development.

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“…However, it was also mentioned that caution is required since topological quantities can only partially describe a network. In [13] has been made an attempt to quantitatively categorize WDNs based on graph metrics, defined as branch index. Another approach of recent papers is to find a connection between topological properties and hydraulic metrics in a WDN.…”

Section: Literature Surveymentioning

confidence: 99%

Analysis of the Segment Graph of Water Distribution Networks

Huzsvár

Wéber

Hős

2019

Period. Polytech. Mech. Eng.

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One of the basic infrastructures of every settlement is the water distribution system, which provides clean and potable water for both private houses, industrial consumers and institution establishments. The operational robustness and vulnerabilities of these networks is an essential issue, both for the quality of life and for the preservation of the environment. Even with frequent and careful maintenance, unintentional pipe bursts might occur, and during the reparation time, the damaged section must be isolated hydraulically from the main body of the water distribution network. Due to the size and complexity of these networks, it might not be trivial how to isolate the burst section, especially if one wishes to minimize the impact on the overall system. This paper presents an algorithmic method that is capable of creating isolation plans for real-life networks in a computationally efficient way, based on the graph properties of the network. Besides this segmentation plan, the topological behavior of the structural graph properties was analyzed with the help of the complex network theory to create a method for the quantitative topology based categorization of the water distribution networks.

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Water Distribution System Classification Using System Characteristics and Graph-Theory Metrics

Cited by 51 publications

References 35 publications

Water Distribution Networks Resilience Analysis: a Comparison between Graph Theory-Based Approaches and Global Resilience Analysis

Water Distribution Networks Resilience Analysis: a Comparison between Graph Theory-Based Approaches and Global Resilience Analysis

An Integrated BIM–GIS Method for Planning of Water Distribution System

Analysis of the Segment Graph of Water Distribution Networks

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