Vertical characterization of the wind mode and its effect on the wind farm profitability of Sidi Daoud – Tunisia

Wind Energy Assessment of the Sidi Daoud Wind Farm - Tunisia

“…The standard height of measurement is generally of 10 m, but during a prospection of a site, in order to draw up a wind project, it is preferable to take measures at two or three levels for one period at least six months in order to know the evolution of the wind speed at altitudes representing an energy interest. The majority of work on the determination of the wind vertical profile in the surface boundary layer is based on the similarity theory of Monin-Obukov [22][23]. This theory was supplemented by studies which proposed extrapolation laws of the wind speed of a level H 1 on a level H 1 according to the variation of roughness classes.…”

“…The modeling of the vertical profile of the wind speed in the measurement place mast 4 by the power and logarithmic laws, in order to know the evolution the wind speed at altitudes representing an energy interest [22][23][24][25][26][27]. A close attention is paid to the study of the influence height on the wind characteristics (mean speed and power density) by using the Rayleigh distribution.…”

“…This theory was supplemented by studies which proposed extrapolation laws of the wind speed of a level H 1 on a level H 1 according to the variation of roughness classes. In order to draw up a comparative study, two extrapolation laws are retained [22][23][24][25][26][27]: -Logarithmic law ; -Power law.…”

Wind Energy Conversion Systems Adapted to the Tunisian Sites

“…It is located between altitude 30˚N and 37˚N latitude and between 8˚E and 12˚E longitude [4,[9][10][11]. Its littoral extends on 1300 km and comprises five large gulfs.…”

“…The Von Karman theory showed that, for a flow under constant flux and neutral atmospheric conditions, the profile of the wind speed is a logarithmic curve of the form [11][12][13][14][15]:…”