Metodologia para análise de eficiência operacional de parques eólicos

Abstract

The objective of this study was to develop a methodology to analyze the operational efficiency of wind farms, capable of presenting the main attention points in their operations, using as an example a wind farm in operation at Rio Grande do Norte. Initially, a method to project the Annual Energy Production based on the farm measurement tower and a long-term series from projects like MERRA2 e ERA5 was presented, to compare to the previously calculated values by the certifier and to fill gaps in the measurements. Afterwards, the wind data were projected in the power curve given by the fabricator, in comparing this projection to the generation measurements it was verified that the wind farm has an energy generation deficit. So that the reasons for this deficit were discovered two steps had to be taken, the verification of the effective power curve of the wind turbines in the park, to separate the inefficiencies of the wind turbines from the unavailability caused mainly by the maintenance and restrictions by ONS commands. It was clear to the plant under study that the biggest cause of the deficit was the inefficiency of the wind turbines, followed by the deficit caused by the unavailability of the park during periods of greater wind potential. It is concluded that the methodology presented in this study is sufficient to indicate the main weak points in this park’s operation, to be investigated further afterwards, helping the park managers to select the focus of improvement.