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Efficiency of High Altitude On-shore Wind Turbines: Air Density and Turbulence Effects—Qollpana Wind Farm (Bolivia)

par Mamani, Rober ;Hackenberg, Norbert;Hendrick, Patrick
Référence Conference on Experimental Mechanics(1-5 July 2018: Brussels - Belgium), Proceedings 2018, The 18th International Conference on Experimental Mechanics (ICEM18), Brussels, Belgium, Vol. 2, page (487)
Publication Publié, 2018-06-24

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• Accès en ligne
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• Statistiques

Résumé :

The wind energy is one of the most important alternatives for renewable and cleanelectricity generation. During the last decade the number of wind farms has largely increased inSouth America. Qollpana is only one case of an on-shore wind farm but it is located at 2900 m abovesea level over a complex terrain. Due to high altitude, the air density is reduced by 27% comparedwith sea level and the topographic characteristics induce a high level of turbulence. Qollpana windfarm has ten wind turbines reaching 27 MW of installed capacity. October is the month of highestwind average velocity and February with the lowest one. This work analyses the capacity factor ofthe wind farm, also the air density and the turbulence effects on wind turbine efficiency. The mainresults show that monthly capacity factor varies between 0.08 and 0.67 in the wind farm. Moreover,the results have shown a considerable effect of the turbulence intensity on the turbines efficiency.