基于压力数据图信号处理的配水管网泄漏检测

IF 2.2 3区 工程技术 Q3 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS Journal of Hydroinformatics Pub Date : 2023-09-30 DOI:10.2166/hydro.2023.047
Daniel Bezerra Barros, Rui Gabriel Souza, Gustavo Meirelles, Bruno Brentan
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引用次数: 0

摘要

摘要给水管网的泄漏影响着整个或大部分管网的水力状态。通过计算压力传感器监测网络节点间的统计相关性,有助于此类泄漏的检测和定位。这开启了与水网络数据库合作的可能性,其中图形信号处理(GSP)工具有助于了解由于液压系统泄漏导致的压力信号变化。本文提出了一种计算图结构上时变压力信号的方法。该方法的核心是基于泄漏引起的压力变化,从而修改图结构。计算每个时间步图的新拓扑,并应用基于PageRank的中心性分析,可以识别水系统中存在的新泄漏。混淆矩阵评估所提出的方法在定义泄漏开始和结束的地点和时间上的精度。七个泄漏用于验证该过程,其准确性为86%。结果表明,该方法在检测泄漏的速度、计算效率和精度方面具有优势。
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Leak detection in water distribution networks based on graph signal processing of pressure data
Abstract Leakages in water distribution networks (WDNs) affect the hydraulic state of the entire or a large part of the network. Statistical correlation computed among pressure sensors monitoring network nodes aids the detection and localization of such leaks. This opens the possibility to work with water network databases, where graph signal processing (GSP) tools aid in understanding changes in pressure signals due to leakages in the hydraulic system. This paper presents a methodology for time-varying pressure signals on graph structures. The core of this methodology is based on changing of pressure, due to leaks, that modifies the graph structure. Computing for each time step a new topology of the graph and applying centrality analysis based on PageRank, it is possible to identify the presence of new leaks at the water system. A confusion matrix evaluates the precision of the proposed methodology on defining where and when such leakages start and end. Seven leaks are used to validate the process, which presented 86% in accuracy terms. The results show the benefits of the method in terms of speed, computational efficiency, and precision in detecting leakages.
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来源期刊
Journal of Hydroinformatics
Journal of Hydroinformatics 工程技术-工程:土木
CiteScore
4.80
自引率
3.70%
发文量
59
审稿时长
3 months
期刊介绍: Journal of Hydroinformatics is a peer-reviewed journal devoted to the application of information technology in the widest sense to problems of the aquatic environment. It promotes Hydroinformatics as a cross-disciplinary field of study, combining technological, human-sociological and more general environmental interests, including an ethical perspective.
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