Leak detection in virtually isolated pipe sections within a complex pipe system using a two-source-four-sensor transient testing configuration

Shi, He, Gong, Jinzhe, Simpson, Angus R, Zecchin, Aaron C and Lambert, Martin F 2020, Leak detection in virtually isolated pipe sections within a complex pipe system using a two-source-four-sensor transient testing configuration, Journal of hydroinformatics, vol. 22, no. 5, pp. 1306-1320, doi: 10.2166/hydro.2020.170.

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Title Leak detection in virtually isolated pipe sections within a complex pipe system using a two-source-four-sensor transient testing configuration
Author(s) Shi, He
Gong, JinzheORCID iD for Gong, Jinzhe orcid.org/0000-0002-6344-5993
Simpson, Angus R
Zecchin, Aaron C
Lambert, Martin F
Journal name Journal of hydroinformatics
Volume number 22
Issue number 5
Start page 1306
End page 1320
Total pages 15
Publisher IWA Publishing
Place of publication Colchester, Eng.
Publication date 2020-09-01
ISSN 1464-7141
1465-1734
Keyword(s) hydraulic transient
leak detection
transfer matrix
water hammer
water distribution systems
Summary Abstract Leak detection in complex pipeline systems is challenging due to complex wave reflections. This research proposes a new technique for leak detection in targeted pipe sections within complex water supply pipe systems using controlled hydraulic transient pressure waves. To ‘virtually isolate’ a targeted pipe section for independent analysis, a two-source-four-sensor transient testing configuration is used to extract the transfer matrix of the targeted pipe section, and it is independent of the system boundary conditions. The imaginary part of the difference between two elements in the transfer matrix is sensitive to leaks. The result should be zero if no leak is present, while a leak will introduce a sinusoidal pattern. An algorithm is developed to extract the leak information, which is applicable to multiple leaks. Two numerical case studies are conducted to validate the new leak detection technique. Case 1 is on a single pipe system with two leaks and deteriorated pipe sections, and pulse pressure waves are used as the excitation. Case 2 is on a simple pipe network with one leak, and pseudo-random binary signals are used as the excitation. The successful determination of the leak location and impedance validates the concept.
Language eng
DOI 10.2166/hydro.2020.170
Indigenous content off
Field of Research 0905 Civil Engineering
HERDC Research category C1 Refereed article in a scholarly journal
Persistent URL http://hdl.handle.net/10536/DRO/DU:30140883

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