Wind analysis is a study on statistical information of measured
wind data. It mainly focuses on identification of crucial parameters
of the probability distribution function. The probability distribution
function defines the occurrence frequency for each value of
wind speed, which is collected for at least a year [5]. In calculating
the amount of electrical energy generation from wind energy,
power output functions of specific wind turbines with respect to
function of measured wind data around the areas. With those
results, determination of annual energy production is carried out
for competence of energy resources at determined sites at desired
heights.
Physically, a wind speed is a height-dependent variable, which
is used to determine how strong the wind drives blades of a wind
turbine at the hub level. To predict a wind speed at a given height,
a power law equation is widely applied as the profile of the wind
speed against height [5,8,19,21]. Therefore, the application of this
empirical model in Eq. (1) is to determine the wind speed at the
hub center of a wind turbine when the wind speed at accessible
height is known.