Detection of Nacelle Anemometers Faults in a Wind Farm

Abstract

Control of wind farms requires the acquisition of accurate wind speed data. Nevertheless there is no system able to control the small, long-term degradation of data registered by anemometers installed in wind turbines. In this report we have developed a method to evaluate the quality of the wind speed measurements with the minimum uncertainty. This evaluation is made comparing the data from anemometers of the whole wind farm to detect its degradation and other anemometer faults. To obtain low uncertainties an estimation method has been developed that allow selecting the more adequate wind speed data range in each nacelle anemometer.