Leak Signature Space: An Original Representation for Robust Leak Location in Water Distribution Networks

In this paper, an original model-based scheme for leak location using pressure sensors in water distribution networks is introduced. The proposed approach is based on a new representation called the Leak Signature Space (LSS) that associates a specific signature to each leak location being minimally...

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Bibliographic Details
Published in:Water (Basel) 2015-03, Vol.7 (3), p.1129-1148
Main Authors: Casillas, Myrna, Garza-Castañón, Luis, Puig, Vicenç, Vargas-Martinez, Adriana
Format: Article
Language:English
Subjects:
Abastament
Aigua
algorithm
Approximation
diagnosis
Enginyeria civil
Enginyeria hidràulica, marítima i sanitària
Leak detection
leak location
leak signature space
linear model approximation
Methods
pipe networks
Sensitivity analysis
sensor
Sensors
systems
water distribution networks
Water-supply
Àrees temàtiques de la UPC
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Summary:In this paper, an original model-based scheme for leak location using pressure sensors in water distribution networks is introduced. The proposed approach is based on a new representation called the Leak Signature Space (LSS) that associates a specific signature to each leak location being minimally affected by leak magnitude. The LSS considers a linear model approximation of the relation between pressure residuals and leaks that is projected onto a selected hyperplane. This new approach allows to infer the location of a given leak by comparing the position of its signature with other leak signatures. Moreover, two ways of improving the method's robustness are proposed. First, by associating a domain of influence to each signature and second, through a time horizon analysis. The efficiency of the method is highlighted by means of a real network using several scenarios involving different number of sensors and considering the presence of noise in the measurements.
ISSN:2073-4441
2073-4441
DOI:10.3390/w7031129