Application of Pearson-Type Ⅲ and the Extreme-Value Type Ⅰ Methods to Calculation of Maximal Wind Speed
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Abstract:
The PearsonType Ⅲ and the ExtremeValue TypeⅠ curves are widely used in China and abroad for calculating the maximal wind speeds. Based on the 10minute mean maximum wind speed data of Qianxian and Fufeng (Shanxi Province) from 1972 to 2004, by using the methods of the PearsonType Ⅲ, ExtremeValue TypeⅠcurves, the extreme values of the 10minute mean maximum wind speed for occurring once every 30 and 50 years are estimated. The results show that according to empirical scattering points and the fitting degree of the theoretical curve, the methods of PearsonType Ⅲ and ExtremeValue Type Ⅰ distribution can be used to adjust the calculation parameters repeatedly. Special attention should be paid to the fitting of small probability events to make the fitting of theoretical curve satisfy the needs of users.
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Supported by:Beijing E-Tiller Technology Development Co., Ltd.
Supported by:Beijing E-Tiller Technology Development Co., Ltd.