风电机组偏航静态偏差对发电性能的影响及优化方法

Influences of wind turbine yaw's static deviation on power generation performance and the optimization method

风电机组的偏航误差主要由偏航控制性能误差和偏航静态偏差决定。文章分析了风电机组偏航静态偏差产生因素及对发电性能的影响,提出了应用机舱式激光雷达测风仪开展实测的偏航静态偏差优化方法,建立了基于偏航扇区划分和风速区段划分的优化模型。通过实例分析可知,偏航静态偏差在低风速段和高风速段对风电机组发电性能影响的敏感度较低,中风速段敏感度最高。文章所提方法可明显减小偏航静态偏差,提高发电机组的发电性能。

The yaw error of a wind turbine is mainly decided by its yaw control performance error and the static yaw deviation(SYD).Based on the analysis of the factors that cause SYD and the influence of SYD on wind turbines'power generation,a SYD optimization approach by using the measurement results of a cabin type laser radar wind meterthe is proposed,and an optimization model based on yaw sector division and wind speed sector division is established as well.Via the case analysis,it can be seen that the SYD has low sensitivity to wind turbines'generation performance while the wind speed is too low or too high,and the sensitivity would be higher for a middle wind speed.Results show that the static deviation of yaw can be obviously optimized by the proposed measurement method,and the power generation performance of wind turbines can also be largely improved.