首页> 外文期刊>International journal of green energy >WEIBULL PARAMETERS ESTIMATION USING FOUR DIFFERENT METHODS AND MOST ENERGY-CARRYING WIND SPEED ANALYSIS
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WEIBULL PARAMETERS ESTIMATION USING FOUR DIFFERENT METHODS AND MOST ENERGY-CARRYING WIND SPEED ANALYSIS

机译:四种不同方法的威布尔参数估计和最大能量携带风速分析

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摘要

The study presents the analysis of wind speed data from seven stations in Saudi Arabia, measured at 20, 30, and 40 m height above ground level (AGL) over a period varying from 2 to 5 years. Specifically, Weibull parameters were calculated using five different methods, four of them based on the statistical analysis of the collected data and a fifth one based on WAsP algorithm used in WindoGrapher software. The calculated values using the five different methods were found to be in good agreement at all the measurement heights. The correlation between the monthly mean values of Weibull scale parameter and the measured wind speed values was found to be linear for all the sites. The linear coefficient 'a' was found to be site's characteristic value and independent of the height AGL for most of the locations. Moreover, linearity has been substantiated between the monthly mean wind power density (WPD) and the corresponding measured wind speed for all the stations, with linear coefficients 'a' directly proportional to height AGL. Finally, the values of Weibull shape parameter (k) were found to be independent of height AGL, while that of scale parameter (c) varying with height.
机译:这项研究对沙特阿拉伯七个站点的风速数据进行了分析,这些数据是在2至5年的时间里,分别在距地面20、30和40 m高的地方(AGL)测量的。具体来说,使用五种不同的方法来计算Weibull参数,其中四种是基于对收集数据的统计分析,第五种是基于WindoGrapher软件中使用的WAsP算法。发现使用五种不同方法的计算值在所有测量高度上都非常一致。对于所有站点,Weibull尺度参数的月平均值与测得的风速值之间的相关性呈线性关系。发现线性系数“ a”是站点的特征值,并且与大多数位置的高度AGL无关。此外,线性度已在所有站点的月平均风能密度(WPD)和相应的测得风速之间得到证实,线性系数“ a”直接与高度AGL成正比。最后,发现威布尔形状参数(k)的值与高度AGL无关,而比例参数(c)的值随高度而变化。

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