Last year the ATLAS II team completed a project with GE Energy and the US National Renewable Energy Laboratory (NREL) to monitor the performance of a GE wind turbine and will soon start new monitoring projects with Texas Tech University. The GE Energy/NREL/Sandia collaboration involved testing a 1.5 MW, 80 metre tall turbine with a rotor diameter of 70.6 meters. The turbine was equipped with four ATLAS II units, collecting a total of 67 measurements, including 12 to characterise the airflow, eight to characterise the operational state of the turbine, and 24 to characterise the structural response. The system collected data continuously, 24 hours a day. All data from the different units were merged into a single data stream at the base of the turbine where the ATLAS II software compressed and stored it onto a local computer. During a five-month trial, more than 17,000 data records were collected, providing 285 GB of data.
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