Statistical Analysis Of Wind Speed Distribution Of Turkey As Regional

The main objective of this study is to estimate the optimum Weibull scale and shape parameters for wind speed distribution at three stations of the state of Tamil Nadu, India using Nelder-Mead, Broyden–Fletcher–Goldfarb–Shanno, and Simulated annealing optimization algorithms. An attempt has been made for the first time to apply these optimization algorithms to determine the optimum parameters. The study was conducted for long term wind speed data (38 years), short term wind speed data (5 years) and also with single year’s wind speed data to assess the performance of the algorithm for different quantum of data. The efficiency of these algorithms are analyzed using various statistical indicators like Root mean square error (RMSE), Correlation coefficient (R), Mean absolute error (MAE) and coefficient of determination (R2). The results suggest that the performance of three algorithms is similar irrespective of the quantum of the dataset. The estimated Weibull parameters are almost similar for short term and long term dataset. There is a marginal variation in the obtained parameters when only single year’s wind data is considered for the analysis. The Weibull probability distribution curve fits very well on the wind speed histogram when only single year’s wind speed data is considered and fits marginally well when short term and long term wind speed data is considered

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Wind Speed Distribution in Ninava Governorate

JOURNAL OF EDUCATION AND SCIENCE ◽

10.33899/edusj.2009.57927 ◽

2009 ◽

Vol 22 (4) ◽

pp. 56-74

Author(s):

Waleed Al-Rijabo ◽

Lamia fayik ◽

Bashar Jaro

Keyword(s):

Wind Speed ◽

Speed Distribution ◽

Wind Speed Distribution

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Modeling of Mineral Dust Emissions with a Weibull Wind Speed Distribution Including Subgrid-Scale Orography Variance

Journal of Atmospheric and Oceanic Technology ◽

10.1175/jtech-d-17-0173.1 ◽

2018 ◽

Vol 35 (6) ◽

pp. 1221-1236

Author(s):

Laurent Menut

Keyword(s):

Wind Speed ◽

Mineral Dust ◽

Aerosol Size Distribution ◽

Test Case ◽

Subgrid Scale ◽

Dust Emissions ◽

Speed Distribution ◽

Wind Speed Distribution ◽

Main Driver ◽

Dust Modeling

AbstractThe modeling of mineral dust emissions requires an extensive knowledge of the wind speed close to the surface. In regional and global models, Weibull distributions are often used to better represent the subgrid-scale variability of the wind speed. This distribution mainly depends on a k parameter, itself currently parameterized as a function of the wind speed value. In this study we propose to add the potential impact of the orography variance in the wind speed distribution by changing the k parameter value. Academic test cases are designed to estimate the parameters of the scheme. A realistic test case is performed over a large domain encompassing the northern part of Africa and Europe and for the period 1 January–1 May 2012. The results of the simulations are compared to particulate matter (PM10) surface concentrations and Aerosol Robotic Network (AERONET) aerosol optical depth and aerosol size distribution. We show that with the orography variance, the simulation results are closer to the ones without variance, showing that this additional variability is not the main driver of possible errors in mineral dust modeling.

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Wind speed distribution modeling for wind power estimation: Case of Agadir in Morocco

Wind Engineering ◽

10.1177/0309524x18780391 ◽

2018 ◽

Vol 43 (2) ◽

pp. 190-200 ◽

Cited By ~ 1

Author(s):

Ijjou Tizgui ◽

Fatima El Guezar ◽

Hassane Bouzahir ◽

Brahim Benaid

Keyword(s):

Wind Speed ◽

Wind Energy ◽

Weibull Distribution ◽

Wind Power ◽

Goodness Of Fit ◽

Statistical Tests ◽

A Priori ◽

Speed Distribution ◽

Distribution Modeling ◽

Wind Speed Distribution

To estimate a wind turbine output, optimize its dimensioning, and predict the economic profitability and risks of a wind energy project, wind speed distribution modeling is crucial. Many researchers use directly Weibull distribution basing on a priori acceptance. However, Weibull does not fit some wind speed regimes. The goal of this work is to model the wind speed distribution at Agadir. For that, we compare the accuracy of four distributions (Weibull, Rayleigh, Gamma, and lognormal) which have given good results in this yield. The goodness-of-fit tests are applied to select the effective distribution. The obtained results explain that Weibull distribution is fitting the histogram of observations better than the other distributions. The analysis deals with comparing the error in estimating the annual wind power density using the examined distributions. It was found that Weibull distribution presents minimum error. Thus, wind energy assessors in Agadir can use directly Weibull distribution basing on a scientific decision made via statistical tests. Moreover, assessors worldwide can use the followed methodology to model their wind speed measurements.

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