两种修正风力发电机功率曲线的方法研究

Two Methods for Correcting the Power Curve of Wind Turbines

摘要: 评估风力发电机组性能的一项重要指标是风机的功率曲线。在风机运行的实际过程中，为了准确测量风机的功率曲线，必须考虑现场不确定因素，如风向变化、自然风速、湍流强度等，而这些不确定的因素给测量带来了很大的困难。因此，为了简单准确求得风力发电机功率曲线，可以依据空气动力学理论对该曲线进行风速修正和空气密度修正，经过修正风速测得的风更加逼近实际机组获得的风；通过修正空气密度将现场空气密度折算成标准空气下的密度测量更接近实际。经过两种方法的两次修正以得到更准确的功率曲线。

Abstract: An important indicator for evaluating the performance of wind turbines is the power curve of the wind turbine. In the actual process of fan operation, in order to accurately measure the power curve of the fan, it is necessary to consider the uncertain factors on the site, such as wind direction change, natural wind speed, turbulence intensity, etc., and these uncertain factors bring great difficulties to the measurement. Therefore, in order to obtain the wind turbine power curve simply and accurately, the wind speed correction and air density correction can be performed according to the aerodynamic theory . The wind measured by the corrected wind speed is closer to the wind obtained by the actual unit; by correcting the air density, the density measurement of the on-site air density into standard air is closer to reality. Two corrections of the two methods are used to obtain a more accurate power curve.