摘要
利用两参数的Weibull分布模型分析内蒙古草原6层高度接近1a的风速序列资料,利用最大似然法估计出不同时间段、不同高度Weibull分布的尺度参数c和形状参数k。结果表明,c、k存在明显的季节变化,在夏季时c、k较小,冬季时c、k较大。c随高度增加呈幂指数的形式增加;k随高度呈二次函数的形式而变化,在约50m的高度取得最大值。
The two parameters of Weibull density distribution function were calculated for grassland located in Inner Mongolia. The data resources, consisting of near one year and six layers of wind data, were adopted and analyzed. The maximum likelihood method was used to estimate k, shape parameter and c, scale parameter of the Weibull function for different time periods. It is found that c and k have the obvious monthly and seasonal variation, larger in winter and smaller in summer. It is observed that c has a power exponent function of height, and that k varies as the form of quadratic function of height and maximum value in the height is obtained at about 50 meters.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2012年第10期1667-1671,共5页
Acta Energiae Solaris Sinica
基金
全国风能资源详查和评价专项任务
国家自然科学基金(40875008
40775018)
