安装角与定桨距风电机组功率曲线优化

Pitch Angle and the Optimization of the Power Curve of Fixed Pitch Wind Turbine

失速调节是定桨距风电机组控制功率输出,避免过载的控制方式。风力发电企业生产过程中经常出现实际功率曲线与理论功率曲线出现较大偏差的情况,对于夏、冬季温差较大地区,冬季时由于空气密度大,过发频繁,对机组的安全造成威胁。定桨距风电机组的功率曲线与安装角相关。风力发电企业可根据不同的空气密度,通过调整安装角来优化功率曲线。在一定范围内安装角增大;输出功率增大,反之亦然。

Stall regulation is one of the methods to control the output of fixed pitch wind turbines and to avoid overload.It is common that the actual wind turbine power curve differs largely from the theoretical power curve during the power generation processes of wind farms,especially for areas with high winter-summer temperature spread,as high air density in winter times causes frequent over-speed,threatening the security of wind turbines.The power curve of a fixed pitch wind turbine is related to its pitch angle.Wind farms can optimize power curves by adjusting pitch angle in accordance with air density.