Validation and Reconstruction of Flow Meter Data in the Barcelona Water Distribution Network

 Automatic Control Department Technical University of Catalonia, Rambla Sant Nebridi, 10, 08222 Terrassa, Spain phone : +34 9373986327 fax : +34 9373986328 e-mail: [email protected] Industrial Robotics Institute, CSIC, C/ Llorens i Artigas 4-6, 08028 Barcelona, Spain LAAS-CNRS, 7 Avenue du Colonel Roche, 31077 Toulouse, France AGBAR Barcelona Water Company, C/Diputació, 351, 08009 Barcelona, Spain  Adasa Sistemas, C/Pedrosa B, 30, 32, 08908 L'Hospitalet de Llobregat, Spain  Abstract: This paper presents a signal analysis methodology to validate (detect) and reconstruct the missing and false data of a large set of flow meters in the telecontrol system of a water distribution network. The proposed methodology is based on a two time-scale forecasting models: a daily model is based on a ARIMA time series, while the 10-minute model is based on distributing the daily flow using a 10-minute demand pattern. The demand patterns has been determined using two methods: correlation analysis and an unsupervised fuzzy logic classification, named LAMDA algorithm. Finally, the proposed methodology has been applied to the Barcelona water distribution network providing very good results.  