The aim of the project is to ensure that the automatic validation and reconstruction system enables all data from the flow meters in various areas of the CAT network to be processed satisfactorily so that the system is more reliable and efficient. Anomalous data that are detected are reconstructed automatically to create a full database. Finally, the tool calculates the balances, hydraulic performance and quality of the analysed flow meters.
Data validation involves analysing the data from flow meters hourly and/or daily and applying levels of the validation test. From the result obtained, the data are labelled as valid or invalid, and the tests to which they have been subjected are specified. The set of tests that must be passed by all hourly data on the state of the network are inspired by the levels of data quality of automatic weather stations defined in standard UNE 500.540.
The results were obtained in three stages. In the first stage, data validation, reconstruction and design models were developed for the total data from the flow meters in two important areas of the CAT network. In the second phase, the proposal was to programme an off-line tool of all validation and reconstruction algorithms of the total data of the flow meters. Finally, in a third stage, the results were analysed and the tool that was developed was assessed. The results were monitored, and final adjustments were made to the parameters.
Tarragona Water Consortium is formed of 63 town councils and 26 industries. To supply the consortium members, there are currently 405 km of pipes, 23 pump stations and 97 tank inlets. The network has installed over 160 flow meters for control and invoicing. The CAT network supplies 85% of the province’s population and 36% of the territory, which is equivalent to a population of between 800,000 and 1,500,000 people.
This new system of validating and reconstructing data from flowmeters has been successfully applied to networks managed by ATLl, CAT Tarragona and TAigua Terrassa.