A STUDY ON WEIBULL DISTRIBUTION FOR （对威布尔分布的研究）.pdf

Quantitative Methods Inquires A STUDY ON WEIBULL DISTRIBUTION FOR ESTIMATING THE PARAMETERS Paritosh BHATTACHARYA CEM, Kolaghat, Midnapore, India E-mail: p_bhattacharya2001@yahoo.co.in Rakhi BHATTACHARJEE BITM, Shantiniketan, India Abstract: The wind resource varies with of the day and the season of the year and even some extent from year to year. Wind energy has inherent variances and hence it has been expressed by distribution functions. In this paper, we present some methods for estimating Weibull parameters, namely, shape parameter ( k ) and scale parameter ( c ). The Weibul distribution is an important distribution especially for reliability and maintainability analysis. The suitable values for both shape parameter and scale parameters of Weibull distribution are important for selecting locations of installing wind turbine generators. The scale parameter of Weibull distribution also important to determine whether a wind farm is good or not. The presented method is the analytical methods and computational experiments on the presented methods are reported. Key words: Wind Speed; Probability Distribution; Weibull Distribution; Linear Least Square Method 1. Introduction Today, most electrical energy is generated by burning huge fossil fuels and special weather conditions such as acid rain and snow, climate change, urban smog, regional haze, several tornados, etc., have happened around the whole world. It is now clear that the installation of a number of wind turbine generators can effectively reduce environmental pollution, fossil fuel consumption, and the costs of overall electricity generation. Although wind is only an intermittent source of energy, it represents a reliable energy resource from a long-term energy policy viewpoint. Among