风电机组功率特性测量不确定度的量级研究

风电机组的功率特性是表征风机发电性能的重要指标,以表格或曲线表示的区间平均功率与平均风速的关系,还需要伴随功率不确定度,才能代表被测风机发电功率在每个风速区间内的统计学分布特征。文章分析了功率测量的B类合成不确定度各分量的量级和大小关系,提出了降低不确定度分量的方法,通过实例获得了功率B类不确定度的量级,证实了减小不确定度的有效性。

The power performance of wind turbine generator system(WTGS)is a significant index to characterize the performance of wind turbine.The relationship between interval average power and average wind speed expressed by table or curve needs to be accompanied by power uncertainty.In order to represent the statistical distribution characteristics of the measured wind power in each wind speed range.This paper analyzes the relationship between the magnitude and magnitude of each component of type B composite uncertainty in power measurement,puts forward a method to reduce the component of uncertainty,and obtains the order of magnitude of power type B uncertainty through an example,which proves the effectiveness of reducing uncertainty.