风力发电机组功率曲线的修正

Correction to power curves of wind-driven generator sets

风力发电机组功率曲线是考核机组性能的一项重要指标,但在实际操作过程中,由于现场自然风风速、风向变化的不确定性,给准确测取风力发电机组功率曲线带来困难。因此,借助空气动力学理论,提出一种简便求取风力发电机功率曲线的方法:利用机组计算机自身绘制的功率曲线,通过理论计算,对功率曲线进行风速和空气密度的修正,以提高功率曲线的精确度和可比性。

The power curve of a winddriven generator set is an important index reflecting the performance of the set. The accurate measurement of the curve, however, is affected by the everchanging wind velocity and direction. Therefore, a convenient method is presented based on aerodynamic theory, which conducts theoretical calculation on the computer plotted power curve of the set and makes correction for wind velocity and air density, so as to improve the accuracy and comparability of the curve.