风机的尾流效应会导致风能的转化效率下降,还会增加湍流引起的机械应力损伤,降低风机的稳定性和 服务寿命。为研究新疆地区陆上风电场风机尾流特征, 2015年11月于新疆地区陆上风电场使用脉冲相干多普勒激光雷达进行风场观测。通过分析得到 新疆地区陆上风电场风机尾流特征,主要包括风速损失率、尾流宽度、尾流长度及其平均结果, 最大风速损失率,尾流长度随时间的变化趋势、与风速之间的关系等,发现风速损失率、 尾流宽度、尾流长度与背景风速、湍流强度有关。

The wind turbine wake can reduce the wind energy conversion efficiency, increase mechanical stress damage and reduce the life span of wind turbine. In order to study the characteristics of turbine wake in Xinjiang, China, the observation of wind based on pulse Doppler lidar was conducted in November 2015. The characteristics of wind turbine wake in Xinjiang were obtained, including the velocity deficit, wake width, wake length and average value of wake, variation of wake with time and relationship between wake and wind speed. The final results show that the velocity deficit, the wake width and the wake length are related to ambient wind velocity and wind turbulence intensity.