基于等效风轮风速的风电机组功率曲线测试分析

Analysis of Wind Turbine Power Curve Test Based on Rotor Equivalent Wind Speed

风速测量是风力发电机组功率曲线测试的关键因素之一。随着风力发电机组的大型化,单一高度的测量风速无法准确地表示通过风轮扫掠区域内风能流量的风速。采用激光雷达测风仪,对大型风力发电机组风轮扫掠区域内多个高度段的风速进行测量,通过等效风轮风速公式计算得出等效风轮风速,得出更加客观真实的功率曲线测试,为风机设计、优化提供一定参考。

Measurement of wind speed is one of the major factors in the power performance measurements of electricity producing wind turbines.With the upsizing of wind turbines,measurement of single-height is unable to cover the wind speed over the rotor swept area.Via measurements of multi-height over the rotor swept area by using laser radar wind sounder,it obtains the rotor equivalent wind speed.It infers a more objective and real power curve,which provides some references for fan design and optimization.