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Nodal vulnerability assessment of water distribution networks: An integrated Fuzzy AHP-TOPSIS approach
International Journal of Critical Infrastructure Protection ( IF 3.6 ) Pub Date : 2021-04-21 , DOI: 10.1016/j.ijcip.2021.100434
Hoese Michel Tornyeviadzi , Fabrice Abunde Neba , Hadi Mohammed , Razak Seidu

Water Distribution Networks (WDNs) ensure reliable water supply to consumers which depends largely on joint and well-coordinated functioning of all diverse facets and components of the WDN. Failure of a vital component has catastrophic consequences and could impair the overall performance of the distribution system. This study presents an integrated Fuzzy AHP-TOPSIS framework that couples selected topological, hydraulic and water quality parameters to holistically assess nodal vulnerability of WDNs even under conflicting priority ranking of the methods considered. Within this framework, we harmonize the unique strengths of Closeness Centrality, Demand Adjusted Closeness Centrality and a Water Quality Index to accurately characterize the vulnerability of demand nodes. The proposed framework is validated on two case studies. The results indicate the ability of the integrated framework to accurately rank demand nodes, differentiate between nodes with the same base demand and distinguish between sink nodes based on water quality. The vulnerability indexes presented by the framework cannot be exhaustively explained by any of the original methods, an indication that the integrated framework provides new information in vulnerability analysis of WDNs. The framework could serve as a tool for water engineers in the analysis of critical nodes, scheduling of maintenance strategies and the assessment of failure impact on water distribution networks.



中文翻译:

供水网络节点脆弱性评估:集成的模糊AHP-TOPSIS方法

供水网络(WDN)确保向消费者提供可靠的供水,这在很大程度上取决于WDN各个方面和组件的共同且协调良好的功能。重要组件的故障会带来灾难性后果,并可能损害配电系统的整体性能。这项研究提出了一个集成的模糊AHP-TOPSIS框架,该框架结合选定的拓扑,水力和水质参数,即使在考虑的方法优先级发生冲突的情况下,也可以从整体上评估WDN的节点脆弱性。在此框架内,我们协调紧密度中心性,需求调整的紧密度中心性和水质指数的独特优势,以准确地描述需求节点的脆弱性。所提出的框架在两个案例研究中得到了验证。结果表明,该集成框架能够根据水质准确地对需求节点进行排名,区分具有相同基本需求的节点以及区分汇节点。框架提供的漏洞索引无法用任何原始方法详尽地解释,这表明集成框架在WDN的漏洞分析中提供了新的信息。该框架可以作为水务工程师的工具,用于分析关键节点,安排维护策略以及评估故障对配水管网的影响。框架提供的漏洞索引无法用任何原始方法详尽地解释,这表明集成框架在WDN的漏洞分析中提供了新的信息。该框架可以作为水务工程师的工具,用于分析关键节点,安排维护策略以及评估故障对配水管网的影响。框架提供的漏洞索引无法用任何原始方法详尽地解释,这表明集成框架在WDN的漏洞分析中提供了新的信息。该框架可以作为水务工程师的工具,用于分析关键节点,安排维护策略以及评估故障对配水管网的影响。

更新日期:2021-04-21
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