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This paper presents a sequence of procedures for the consolidation of data from hydroelectric plants. The procedures are based on static and dynamic data recorded by the company that manages plant operation. The proposed methodology uses a data manager, a queries builder, a generator of the function overall efficiency and an elecRBRH – Revista Brasileira de Recursos Hídricos Volume 17 n.1 Jan/Mar 2012, 9-21 21 tronic spreadsheet. It has been applied to the data from a large Brazilian hydroelectric plant which is part of the National Interconnected System and its operation is coordinated by the Electric System National Operator. The benefits of data consolidation are analyzed using a simulator of the hydroelectric plant operation. This simulator is used in an attempt to reproduce the past operation of the plant, initially using official data and then consolidated data. The results show significant improvements in terms of data quality contributing to the efficiency and reliability of the computational models in use by the Brazilian energy sector to plan the operation. Key-words: Data Quality, Overall yield, Hydroelectric

Procedimentos para Consolidação de Dados de Usinas Hidrelétricas Baseados nas Informações Registradas