A Statistical Analysis of Wind Power Density Based on the Weibull and Ralyeigh models of Penjwen Region Sulaimani/ Iraq

In the present study wind power density of the penjwen region have been statistically analyzed during the period fromjanuary 2001 to december 2003 based on the monthly measured mean wind speed data. the annual and monthly windspeeds and wind density are estimated. the weibull and ralyeigh distribution functions have been derived from the availabledata and both weibull and rayleigh probability density functions are fitted to the measured probability distributions onyearly basis, it was shown that the weibull distribution is fitting the measured monthly probability density distributions betterthan the rayleigh distribution for the whole years. the wind power density of this region has been studied based on theweibull function. weibull distribution shows a good approximation for estimation of power density.