Abstract:
The surprising evolution from the last decade in the area of renewable energy has triggered the emergence of the new
technical challenges for both the power system operators and for the project developers of this area. One of this
challenges refer to the analysis, from the statistical view, of the wind parameters (speed, direction, frequency,
amplitude) on relevant time intervals. A detailed analysis of the wind speed values recorded in a specific site leads to
the generation of results that can lead to the determination of optimal values for the electric power generated at each
time point by the wind turbine located in that area. Very important is the identification of sign changes and hence the
time intervals during which the wind turbine does not work because these has a major importance in the stage of initial
estimation of power energy generated and also for the estimation of average lifetime of a wind turbine on a specific site
with various variation regimes of wind speed.