Abstract
Time domain wind turbine simulation needs two kinds of wind models:
a detailed three-dimensional vector field associated with computational
fluid dynamics in order to assess mechanical stress, aerodynamic
design, and an equivalent rotor wind model for electromechanical
behaviour and power flow analysis. The paper focuses its attention
in the second class. The most important parameters to be taken into
consideration in wind modelling are: the frequency spectrum model,
gust occurrence probability, operation under wakes and the coherence
inside the wind farm. From a single turbine operation to a large
wind farm different models are analyzed and their validity is discussed.
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