Comparative Study of Five Methods to Estimate Weibull Parameters for Wind Speed on Phangan Island, Thailand

By W. Werapun, Y. Tirawanichakul, J. Waewsak. 2015

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Abstract The Weibull distribution has been widely used to represent the time distribution of wind speed. The two parameters to fit are k for shape and c for scale, and five methods were compared to estimate these Weibull parameters. Wind speed data from January 2012 to December 2014 from Phangan island were used with the fitting methods, namely empirical, energy pattern factor, maximum likelihood, modified maximum likelihood, and graphical method. The goodness of fit was quantified using Kolmogorov-Sminorv test, R2, RMSE and the percent error of wind power density. With these data, the energy pattern factor method performed the best in terms of percent error of power density, and had the highest R2. The graphical method performed the worst among these methods, in this case study.

Subfields: Aerospace Engineering, Electrical and Electronic Engineering, Environmental Engineering

View Paper: https://www.semanticscholar.org/paper/a37da0af68fd93a78789b9ee847c63e3f18c171e