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对风剪、塔影和尾流对风速的影响进行研究,建立了风力机数学模型。对某风场中的风速进行仿真分析,结果表明风速相对于原先的风速明显减小,从而使得风力机的输出功率明显比自然风速下的功率要小。对风轮的输出功率和电机的输出功率、风能利用系数和叶尖速比进行了仿真分析,结果表明:在该风场中,所选风力机的输出功率在额定功率以下,风能利用系数和叶尖速比变化范围较小,风力机没有达到合理使用。
The influence of wind shear, tower shadow and wakes on wind speed is studied, and the mathematical model of wind turbine is established. The wind speed in a wind farm is simulated and analyzed. The results show that the wind speed obviously decreases compared with the original wind speed, so that the output power of the wind turbine is obviously smaller than the power under the natural wind speed. The output power of the wind turbine and the output power of the motor, the wind energy utilization coefficient and the tip speed ratio are simulated and analyzed. The results show that the output power of the selected wind turbine is below the rated power, the wind energy utilization coefficient and The change of tip speed ratio is smaller, and the wind turbine does not reach the reasonable use.