基于层次结构的配水管网重要性和可靠性评估模型

IF 9.4 1区 工程技术 Q1 ENGINEERING, INDUSTRIAL
Haiming Jiao , Zhen Hu , Zhijiang Yang , Wen Zeng , Feng Xu , Cuiyan Han
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引用次数: 0

摘要

分段-阀门 (SV) 模型可用于分析配水管网 (WDN) 的可靠性。然而,该模型通常侧重于分段故障对自身的影响。WDN 中分段的隔离不仅会影响分段本身,还会影响供水路径经过的其他分段。因此,考虑到供水路径以及上下游网段之间的相互作用,我们将 SV 图中的环路转换为节点,以简化节点,用树状形式(称为 SV 树)清晰地描述网段层次结构及其相互联系。在 SV 树和复杂网络理论的基础上,提出了一种利用间度中心性估算供应短缺率的方法,对示例 WDN 的局部重要性进行了详细分析。同时,从网段间的相互影响和用户取水难度出发,构建了能反映 WDN 全局可靠性的新分析指标。结果表明,新的重要性评估指标在不同的 WDN 配置中都能发挥有效作用,而且其计算时间远低于水力模拟。此外,可靠性评估指标更具实用性,能有效发现水利工程网络中存在的问题。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Hierarchical structure-based model for importance and reliability assessment of water distribution networks
The Segment-Valve (SV) model can be utilized to analyze the reliability of water distribution networks (WDNs). However, it often focuses on the impact of segment failures on themselves. The isolation of segments in the WDNs not only affects the segments themselves but also influences other segments through which the water supply path passes. Therefore, considering the water supply path and the interaction between upstream and downstream segments, we convert the loops in the SV graph to nodes to simplify them, clearly describing the segmented hierarchy and its interconnections in a tree-like form, termed SV-tree. Based on the SV-tree and complex network theory, a method is proposed to estimate the supply shortage rate using betweenness centrality to provide a detailed analysis for local importance on example WDNs. Meanwhile, new analysis indicators that can reflect the global reliability of the WDNs are constructed from the mutual influence between segments and the difficulty for users to obtain water. The results demonstrate the efficacy of the new importance assessment indicator across various WDNs configurations, and its calculation time is much lower than that of hydraulic simulation. In addition, the reliability assessment indicators are more practical and can effectively identify problems existing in the WDNs.
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来源期刊
Reliability Engineering & System Safety
Reliability Engineering & System Safety 管理科学-工程:工业
CiteScore
15.20
自引率
39.50%
发文量
621
审稿时长
67 days
期刊介绍: Elsevier publishes Reliability Engineering & System Safety in association with the European Safety and Reliability Association and the Safety Engineering and Risk Analysis Division. The international journal is devoted to developing and applying methods to enhance the safety and reliability of complex technological systems, like nuclear power plants, chemical plants, hazardous waste facilities, space systems, offshore and maritime systems, transportation systems, constructed infrastructure, and manufacturing plants. The journal normally publishes only articles that involve the analysis of substantive problems related to the reliability of complex systems or present techniques and/or theoretical results that have a discernable relationship to the solution of such problems. An important aim is to balance academic material and practical applications.
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