Authors:Cristina Martín Andonegui, Bruno Albos, Cruz Enrique Borges Hernández, Ainhoa Alonso Vicario
This paper presents how the efficiency of a water distribution network can be assessed and improved by using smart metering technology and model-based simulation. Consorcio de Aguas Bilbao Bizkaia (CABB) water utility is leading a demonstrative case study for the audit of the networks. They are deploying 20,000 smart meters in Etxebarri, so that a full water balance analysis can be completed. During 2013, the Infrastructure Leakage Index (ILI) in Etxebarri has been 11.92 on average. The objective is to achieve values lower than 7. On this effort, a new modelling-based approach has shown to be useful. It consists of computing the correlation between the Fault Indicator Vector and the Fault Signal Matrix (FSM). The former represents the real leakages measured in the system while the former evaluates how the pressure distribution would be when applying leakages at different points. The correlation presents high values when the FSM correctly resembles the real leakages. A simulation example has shown that the method presents consistent results when an important leakage is to be localized.