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Onsite leak location in a pipe network by cepstrum analysis of pressure transients
Leakage is a major source of lost revenue in pipeline distribution networks. In UK water distribution networks, the amount of treated water lost within distribution networks can reach up to 40% of the total supply. Existing leakage location techniques are heavily dependent on acoustic sensing, which can perform poorly in situations in which the noise created by a leak is small or attenuates rapidly. A reliable, nonacoustic‐based location technique would be a significant advance for the water industry. The work presented here applies a pressure transient‐based technique for leak location, which has previously only been tested under laboratory conditions, to a live water distribution network. The method has the potential to increase the speed and accuracy of leak locations and reduce the occurrence of inaccurate leak diagnosis. A single device that fits to standard fire hydrants is used to generate a mild transient and collect the required data. This method is based on analyzing pressure waves reflected by leaks and other features in a pipeline and accurately identifies reflections in measurements of the small pressure wave caused by pipeline features, including leaks. The technique requires accurate estimation of the wave propagation speed; a simple empirical approach for determining this is included.
Onsite leak location in a pipe network by cepstrum analysis of pressure transients
Leakage is a major source of lost revenue in pipeline distribution networks. In UK water distribution networks, the amount of treated water lost within distribution networks can reach up to 40% of the total supply. Existing leakage location techniques are heavily dependent on acoustic sensing, which can perform poorly in situations in which the noise created by a leak is small or attenuates rapidly. A reliable, nonacoustic‐based location technique would be a significant advance for the water industry. The work presented here applies a pressure transient‐based technique for leak location, which has previously only been tested under laboratory conditions, to a live water distribution network. The method has the potential to increase the speed and accuracy of leak locations and reduce the occurrence of inaccurate leak diagnosis. A single device that fits to standard fire hydrants is used to generate a mild transient and collect the required data. This method is based on analyzing pressure waves reflected by leaks and other features in a pipeline and accurately identifies reflections in measurements of the small pressure wave caused by pipeline features, including leaks. The technique requires accurate estimation of the wave propagation speed; a simple empirical approach for determining this is included.
Onsite leak location in a pipe network by cepstrum analysis of pressure transients
Shucksmith, James D. (author) / Boxall, Joby B. (author) / Staszewski, Wieslaw J. (author) / Seth, Allyson (author) / Beck, Stephen B.M. (author)
Journal ‐ American Water Works Association ; 104 ; E457-E465
2012-08-01
9 pages
Article (Journal)
Electronic Resource
English
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