Review of Modeling Methodologies for Managing Water Distribution Security

Journal of Water Resources Planning and Management, Journal Year: 2020, Volume and Issue: 146(8)

Published: June 13, 2020

Water distribution systems are vulnerable to hazards that threaten water delivery, quality, and physical cybernetic infrastructure. utilities managers responsible for assessing preparing these hazards, researchers have developed a range of computational frameworks explore identify strategies what-if scenarios. This manuscript conducts review the literature report on state art in modeling methodologies been support security systems. First, major activities outlined emergency management framework reviewed; include risk assessment, mitigation, preparedness, response, recovery. Simulation approaches prototype software tools reviewed by government agencies mitigating four threat modes, including contamination events, destruction, interconnected infrastructure cascading failures, attacks. Modeling mapped activities, an analysis research is conducted group studies based used activities. Recommendations made needs will contribute enhancement

Language: Английский

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Review on visualization technology in simulation training system for major natural disasters

Natural Hazards, Journal Year: 2022, Volume and Issue: 112(3), P. 1851 - 1882

Published: March 16, 2022

Language: Английский

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Inversion Model of Water Distribution Systems for Nodal Demand Calibration

Journal of Water Resources Planning and Management, Journal Year: 2015, Volume and Issue: 141(9)

Published: Jan. 9, 2015

Nodal demand calibration of a water distribution system (WDS) is process adjusting the nodal in WDS models to make its predictions consisting with measurements, which an inversion problem compared conventional forward computation. Most existing methods rely on performing computation repeatedly calculate sensitivity matrix or generate offspring for searching optimal solutions. This paper develops alternative framework, namely model, directly calibrate demand. The model constructed by separating known and unknown variables continuity energy equations using decomposition method. Specifically, measured unmeasured demand, head, pipe flow are taken as knows unknowns, respectively. demands similar user characteristics grouped (i.e., aggregated) overdetermined, Gauss-Newton based iteration method applied solve model. To evaluate results when observation errors involved, standard deviations unknowns calculated first-order second-moment uncertainty quantification, verified Monte Carlo simulation. A simple network used illustrate construction detail, two numerical case studies, including real highly looped network, further validate effectiveness feasibility. Encouraging obtained clearly demonstrate proposed has potential practical application real-time calibration, state estimation, quantification WDSs.

Language: Английский

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Network structure classification and features of water distribution systems

Water Resources Research, Journal Year: 2017, Volume and Issue: 53(4), P. 3407 - 3423

Published: March 28, 2017

Abstract The network connectivity structure of water distribution systems (WDSs) represents the domain where hydraulic processes occur, driving emerging behavior such systems, for example with respect to robustness and vulnerability. In complex theory (CNT), a common way classifying is association nodal degree specific probability models, during last decades, researchers classified many real networks using Poisson or Pareto distributions. spite fact that degree‐based classification could play crucial role assess WDS vulnerability, this task not easy because WDSs strongly constrained by spatial characteristics environment they are constructed. consequence these constraints spans very small ranges in hindering reliable standard approach based on distribution. This work investigates 22 WDSs, built different environments, demonstrating generally models distributions well. order overcome problem degree, we define “neighborhood” equal sum degrees nearest topological neighbors (i.e., adjacent nodes). definition consistent single node significant analysis WDSs.

Language: Английский

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Review of the Quantitative Resilience Methods in Water Distribution Networks

Water, Journal Year: 2019, Volume and Issue: 11(6), P. 1189 - 1189

Published: June 7, 2019

Water distribution networks (WDNs) are critical contributors to the social welfare, economic growth, and public health in cities. Under uncertainties that introduced owing climate change, urban development, aging components, interdependent infrastructure, WDN performance must be evaluated using continuously innovative methods data acquisition. Quantitative resilience assessments provide useful information for operators planners, enabling support systems can withstand disasters, recover quickly from outages, adapt uncertain environments. This study reviews contemporary approaches quantifying of WDNs. 1508 journal articles published 1950 2018 identified under systematic review guidelines. 137 references focus on quantitative classified as surrogate measures, simulation methods, network theory approaches, fault detection isolation approaches. identifies capability WDNs describes related terms absorptive, restorative, adaptive capabilities. It also discusses metrics, research progresses, limitations associated with each method. Finally, this indicates challenges quantification should overcome achieving improved future.

Language: Английский

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

ISPRS International Journal of Geo-Information, Journal Year: 2019, Volume and Issue: 8(8), P. 331 - 331

Published: July 27, 2019

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

Language: Английский

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Resilience Evaluation of Water Supply Networks against Seismic Hazards

Journal of Pipeline Systems Engineering and Practice, Journal Year: 2016, Volume and Issue: 8(1)

Published: July 18, 2016

It is imperative that water supply networks (WSNs) continue to perform even after subjected natural and anthropogenic hazards, it more important in the case of earthquakes for fighting fires usually follow. Past have caused significant damage WSNs rendering them dysfunctional potentially threatening human survival. Although there has been a lot research conducted past on behavior buried pipelines, are few metrics models readily usable improving performance large prone seismic hazards. This paper proposes an easy-to-use metric quantifying resilience optimization framework WSN budgetary constraints. The proposed dependent hazard intensity, estimated pipeline response, network topology. use demonstrated (1,874 pipelines 1,474 demand nodes), real-world coastal region earthquakes. value existing used demonstration found increase by approximately 8% with $10 million investment. can be helpful rehabilitation planning capital improvement works utilities.

Language: Английский

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Scenario reduction-based simulation method for efficient serviceability assessment of earthquake-damaged water distribution systems

Reliability Engineering & System Safety, Journal Year: 2024, Volume and Issue: 246, P. 110086 - 110086

Published: March 16, 2024

Language: Английский

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Water outage predictions for natural hazards using synthetic water distribution systems

Risk Analysis, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 21, 2025

Abstract Hazards can impact water systems, leading to outages that result in economic, environmental, and societal losses. Modeling a system's behavior helps develop short‐term restoration strategies long‐term resilience planning. However, data on the topology operational characteristics of real systems are often unavailable outside utility operating system, limiting ability others depending system understand its vulnerability resilience. We address this limitation by developing an algorithm generates synthetic distribution using only publicly available data. Our approach provides hydraulic information at building level support infrastructure assessments. validated our model comparing network topologic properties with from Ann Arbor, Michigan. results indicate 95% simulated building‐level pressures were within PSI existing system. To demonstrate application model, we hazard loading fragility functions corresponding earthquake scenario.

Language: Английский

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System Reliability Evaluation in Water Distribution Networks with the Impact of Valves Experiencing Cascading Failures

Water, Journal Year: 2017, Volume and Issue: 9(6), P. 413 - 413

Published: June 9, 2017

Water distribution networks (WDNs) represent a class of critical infrastructure networks. When disaster occurs, component failures in WDN may trigger system that result larger-scale reactions. The aim the paper is to evaluate evolution reliability and failure propagation time for experiencing cascading failures, find pipes which reduce dramatically. Multiple factors are considered method such as network topology, balance water supply demand, demand multiplier, pipe break isolation. pipe-based attack with multiple scenarios simulated paper. A case used illustrate method. results show lowest capacity gets stronger when short supply, becoming dominant factor decides time. valve ratio (VR) present flattened S curve relationship, there two turning points VR. can be identified. With fixed 5% valves, improve resist effectively. findings provide insights into WDNs failures. It proven useful future studies focused on operation management services.

Language: Английский

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