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• W2960835411 abstract "Leak detection is nowadays an important task for water utilities as leakages in water distribution systems (WDS) increase economic costs significantly and create water resource shortages. Monitoring data such as pressure and flow rate of WDS fluctuate with time. Diagnosis based on time series monitoring data is thought to be more convincing than one-time point data. In this paper, a threshold selection method for the correlation coefficient based on time series data is proposed based on leak scenario falsification, to explore the advantages of data interpretation based on time series for leak detection. The approach utilizes temporal varying correlation between data from multiple pressure sensors, updates the threshold values over time, and scans multiple times for a scanning time window. The effect of scanning time window length on threshold selection is also tested. The performance of the proposed method is tested on a real, full-scale water distribution network using synthetic data, considering the uncertainty of demand and leak flow rates, sensor noise, and so forth. The case study shows that the scanning time window length of 3–6 achieves better performance; the potential of the method for leak detection performance improvement is confirmed, though affected by many factors such as modeling and measurement uncertainties." @default.
• W2960835411 created "2019-07-23" @default.
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• W2960835411 date "2019-07-11" @default.
• W2960835411 modified "2023-10-18" @default.
• W2960835411 title "Time-Series-Based Leakage Detection Using Multiple Pressure Sensors in Water Distribution Systems" @default.
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• W2960835411 doi "https://doi.org/10.3390/s19143070" @default.
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