摘要
为了解决风机在低风速区偏航动作过于频繁和风能转化率低的问题,在对风机所处地区风向和风速进行预测的前提下,提出一种风机偏航控制策略。通过建立风机偏航模型,以相同风况数据为输入,对比分析了本偏航控制策略和传统偏航控制策略的控制效果,结果表明控制策略能使风机获得更多机械能。同时针对本控制策略中出现的三个变量,做三因素混合水平正交试验。并对试验结果进行分析,结果表明:小节时间对风机所获机械能影响最大,预测间隔和扇区分割有一定影响。可见最优组合为120s小节时间、20扇区分割、5小节预测间隔。
In order to solve the problem that the yaw action of the wind turbine in the low wind speed area is too frequent and the wind energy conversion rate is low,on the premise of predicting the wind direction and wind speed in the area where the wind turbine is located,it proposes a yaw control strategy for wind turbines. A yaw model of the wind turbine was established,and the data of the same wind conditions were used as input to compare the control effects of this yaw control strategy with the traditional yaw control strategy. The results show that this control strategy can enable the wind turbine to obtain more mechanical energy. At the same time,for the three variables appearing in this control strategy,the paper make a three-factor mixed level orthogonal test. And the test results are analyzed. The results show that:the bar time has the greatest impact on the mechanical energy obtained by the wind turbine,and the prediction interval and sector division have a certain effect. It is concluded that the optimal combination is 120s bar time,20 sector division,and 5 bars prediction interval.
作者
陈志昊
朱兆强
余豪
张大斌
CHEN Zhi-hao;ZHU Zhao-qiang;YU Hao;ZHANG Da-bin(School of Mechanical Engineering,Guizhou University,Guizhou Guiyang 550000,China;Powerchina Guizhou Engineering Co.,Ltd.,Guizhou Guiyang 550000,China)
出处
《机械设计与制造》
北大核心
2023年第3期67-70,74,共5页
Machinery Design & Manufacture
基金
贵州省科技计划项目(黔科合支撑[2020]2Y041号)
贵州省科技计划项目(黔科合平台人才[2019]5616号)。
关键词
风力发电机
低风速
偏航控制
风况预测
Wind Turbine
Low Wind Speed
Yaw Control
Wind Condition Prediction
