Resilience enhancement of water distribution networks under pipe failures: a hydraulically inspired complex network approach

AQUA - Water Infrastructure Ecosystems and Society, Год журнала: 2023, Номер 72(12), С. 2358 - 2376

Опубликована: Ноя. 1, 2023

Abstract The resilience of water distribution networks (WDNs) should be proactively evaluated to reduce the potential impacts disruptive events. This study proposes a novel hydraulically-inspired complex network approach (HCNA) assess and enhance WDN in case single-pipe failure. Unlike conventional hydraulic-based models, HCNA requires no hydraulic simulations for analysis. Instead, it quantifies failure consequences edges (pipes) on graph by incorporating topological attributes with flow redistribution triggered failures. procedure leads identification critical (pipes), as well impacted ones, representing more susceptible others. are then systematically resized integrating graph-based design approach, obtaining wide range enhancement solutions. A comparative between model three WDNs confirms HCNA's effectiveness identifying most pipes various sizes. Furthermore, provides comparable solutions evolutionary optimization but significantly lower computational effort (1,400 times faster). Thus, can efficiently used large-scale WDNs, where application optimizations is limited due intensive workload.

Язык: Английский

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Towards an Understanding of Hydraulic Sensitivity: Graph Theory Contributions to Water Distribution Analysis

Water, Год журнала: 2024, Номер 16(5), С. 646 - 646

Опубликована: Фев. 22, 2024

Water distribution systems (WDSs) are complex networks with numerous interconnected junctions and pipes. The robustness reliability of these critically dependent on their network structure, necessitating detailed analysis for proactive leak detection to maintain integrity functionality. This study addresses gaps in traditional WDS by integrating hydraulic measures graph theory improve sensitivity detection. Through case studies five distinct WDSs, we investigate the relationship between metrics. Our findings demonstrate collective impact factors system efficiency. research provides enhanced insights into operational dynamics highlights significant potential bolster resilience reliability.

Язык: Английский

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Do resilience metrics of water distribution systems really assess resilience? A critical review

Water Research, Год журнала: 2023, Номер 248, С. 120820 - 120820

Опубликована: Ноя. 2, 2023

Having become vital to satisfying basic human needs, water distribution systems (WDSs) are considered critical infrastructure. They vulnerable events such as extreme weather, natural and man-made disasters, armed conflicts etc. To account for during design operation of WDSs, the concept resilience is frequently mentioned. How WDSs can be assessed using metrics has been subject research many publications. The aim this paper inspect alignment between a general understanding in used their assessment. A novel framework categorising presented. literature review performed results analysed developed framework. show that existing not able capture its complexityresilience do really assess whole, but rather focus only on specific functions properties which make resilient.

Язык: Английский

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Towards resilient water supply in centralized control and decentralized execution mode

Journal of Water Supply Research and Technology—AQUA, Год журнала: 2021, Номер 70(4), С. 449 - 466

Опубликована: Апрель 29, 2021

Abstract This paper shares a vision that sustainable water supply requires resilient infrastructures which are presumably in the centralized control and decentralized execution (CCDE) mode with multiscale resilience. The CCDE should be planned based on structure of infrastructures, systems divided into number hierarchically organized subsystems. allows independent all subsystems under normal situations yet coordination at different scales to mitigate any disturbances during failure events, i.e. is discussed detail for distribution (WDSs). Specifically, conceptual design described, progress understanding structures WDSs summarized literature review. Furthermore, few theories consistent concept include decomposition theorems, fractal theory, theories, complex network theory. next step will identify optimal best trade-off goals WDS analysis management. process needs support from not only innovative modelling tools extensive datasets but also inspiring exemplar systems, e.g. natural systems.

Язык: Английский

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Identification of Network Patterns in Optimal Water Distribution Systems Based on Complex Network Analysis

World Environmental and Water Resources Congress 2011, Год журнала: 2019, Номер unknown, С. 473 - 483

Опубликована: Май 16, 2019

Many different aspects of water distribution systems have been in the focus optimization. One aspect is multi-objective design pipe network, resulting a set trade off (Pareto) network solutions. While complex nature has already explored, literature lacking an investigation graph characteristics optimal networks. To explore and patterns networks, system optimized with approach considering costs resilience. Besides characterization topology investigated also, multitude Pareto solutions measures taking into account structural, hydraulic, quality features. E.g. it was determined that edge betweenness centrality from source drives layout solution for low resilience values appropriate weighting function there linear correlation between shortest path lengths nodal ages (R2=0.965).

Язык: Английский

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Complex Network Analysis of Water Distribution Systems in Their Dual Representation Using Isolation Valve Information

World Environmental and Water Resources Congress 2011, Год журнала: 2019, Номер unknown

Опубликована: Май 16, 2019

In the event of a disruption operation, parts water distribution networks (WDNs) must be temporarily disconnected from supply source by closure isolation valves to allow pipe repair. For cost reasons, however, number such is usually limited, requiring strategies for their optimal placement. this paper we combine graph theoretical approaches with reliability analysis using WDN topology and valve information. A novel methodology assessment placement developed, in which investigate WDNs information space means complex network analysis. Unlike traditional approaches, use dual representation network, where segments (i.e., set pipes) are considered as nodes edges. With developed algorithm, analyzed on basis graph, providing new insights beyond conventional (primal mapping) The method applied two real-world systems, identify different patterns respect probability density functions (dual) node properties: node-degree P(k), aggregated length P(l), demand P(d). Additional metrics, characteristic path length, degree correlation, modularity investigated discussed. observed topological differences also reflect availability financial resources types systems. implications results robustness isolation.

Язык: Английский

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A Novel Graph-Based Vulnerability Metric in Urban Network Infrastructures: The Case of Water Distribution Networks

Water, Год журнала: 2021, Номер 13(11), С. 1502 - 1502

Опубликована: Май 27, 2021

The key contribution of this paper is to embed the analysis network in a framework based on mapping from input space whose elements are nodes graph or entire into an information probability distributions associated objects space. Specifically, node distribution its node-to-node distances and whole aggregation these distributions. In two proposed for analysis: Jensen-Shannon Wasserstein, respectively theory optimal transport theory. This representation allows compute distance between original one obtained by removal edges use as index increase vulnerability induced removal. way new characterization obtained. has been tested real-world water networks. results discussed along those which relate loss efficiency given spectra adjacency Laplacian matrices network. models algorithms considered have integrated analytics can also support other networked infrastructures among power grids, gas distribution, transit networks included.

Язык: Английский

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Evaluation of industrial network robustness against targeted attacks

Concurrency and Computation Practice and Experience, Год журнала: 2023, Номер 35(27)

Опубликована: Июнь 27, 2023

Summary Developing a long‐lasting, secure Industry 4.0 system presents significant challenge for businesses and other interested parties. Industrial control systems (ICSs) are particularly vulnerable to cybercrime because of the operating systems' excessive availability high robustness requirements. This research investigates five graph‐theory‐based measures evaluate industrial network topologies against three centrality‐based attacks one random attack. Experiments conducted examine levels ICS topology, from field devices controllers enterprise devices. The results twofold. On hand, closeness‐based attack is most harmful since it has highest destructive potential needs only half total nodes in reach lowest level. betweenness‐based follows closely terms destruction, whereas degree‐based less but rapidly degrades network. flow measure provides best performance presence any studied attacks, showing strong perception reduction when percent attacked. For this reason, suitable identify locate targeted at their early stages, preventing them becoming more catastrophic. Finally, suggest that security should combine least two ensure early‐stage detection. also confirmed by implementing on real gas transmission

Язык: Английский

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Random Network Model for Assessing the Topological Performance of Water Distribution Systems

KSCE Journal of Civil Engineering, Год журнала: 2023, Номер 27(10), С. 4101 - 4114

Опубликована: Авг. 11, 2023

Язык: Английский

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Quantifying Hierarchical Indicators of Water Distribution Network Structure and Identifying Their Relationships with Surrogate Indicators of Hydraulic Performance

Journal of Water Resources Planning and Management, Год журнала: 2021, Номер 147(4)

Опубликована: Янв. 27, 2021

Enhancing the performance of water distribution networks (WDNs) on a day-to-day basis or under extreme disturbances is an utmost priority for utilities. Previous research has characterized structure WDNs in pipe–junction segment–valve representation to gain insight various aspects their performance; however, characterizing WDN hierarchical and its relationship with lacking. Two key physical properties are loops pipe diameters that organized way. Novel indicators have been created quantify network hierarchy related these other spatial flow networks: loop nestedness diameter gradation along paths. The goal this study adopt such characterize evaluate performance. This applies decomposition process model relationships among as tree quantifying nestedness. Flow paths monotonically increasing decreasing traced gradation. Statistical distributions approximated two indicators. Then, between (measuring path redundancy power surplus) identified. For 15 benchmark networks, finds statistical representing closely follow law. Results suggest gradual high increase redundancy, increases surplus. demonstrates analysis can significantly supplement traditional topological analyses explaining

Язык: Английский

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