期刊
ALEXANDRIA ENGINEERING JOURNAL
卷 57, 期 4, 页码 2299-2311出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.aej.2017.08.008
关键词
Weibull parameters; Wind frequency distribution; Wind speed; Probability distribution function; Statistical analysis
The effectiveness of nine different numerical methods is examined for calculating the parameters of Weibull distribution at three different heights 80 m, 100 m and 120 m to estimate wind power density. The measurement campaign was conducted at Kayathar, Tamil Nadu, India. The time series wind data were recorded using SecondWind Triton SODAR (Sound Detection and Ranging) instrument. Firstly, the fidelity assessment of SODAR measurement was examined. The aim of this study is to identify the more accurate method for computing wind power density of a selected region. The performance of the selected methods is judged based on goodness of fit test i.e. Root Mean Square Error Test (RMSE), Coefficient of Determination (R-2), Mean Absolute Percentage Error (MAPE), and Chi-square Test (X-2). Wind power densities are estimated with the help of estimated parameter values. This study proposes an approach to utilize SODAR and also aims to examine the accuracy of SODAR measurement by comparing the results with cup anemometer, in an attempt to establish adequate criteria for an effective utilization of SODAR for wind resource assessment. The results suggest that SODAR may be used as an alternative to meteorological mast. (C) 2017 Faculty of Engineering, Alexandria University. Production and hosting by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
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