风功率三种概率分布特性对比分析

Three Kinds of Comparative Analysis of the Probability Distribution Characteristics of Wind Power Variations

为了确定风功率的概率分布特性,对某风场实际风功率采用指数分布、weibull分布、正态分布三种函数拟合。通过比较得出,指数分布不适用于风功率分布上;在分隔区间小时(≤26),采用双参数weibull分布和正态分布都可以拟合风功率概率密度,而随着分隔区间增大,采用weibull分布拟合优于正态分布。

In order to solve the distribution characteristics of wind power, three kind of comparative analysis of the probability distribution are used in a wind field. The results show that the exponential distribution is not suitable for wind power probability distribution, and In the case of small space interval, using double parameters weibulI distribution and normal distribution probability density can be fit the wind power, and with the space interval, using weibull distribution more can better than normal distribution fitting wind power probability density.