基于风速矢量的风机攻角与偏航全局鲁棒控制模型  

Fan-angle of attack and yaw global robust control model based on wind speed vector

作　　者：滕云[1] 李景瑞 李岩 Teng Yun;Li Jingrui;Li Yan(College of Electrical Engineering,Shenyang University of Technology,Shenyang 110870,China;State Grid East Inner Mongolia Eleetrie Power Company,Huhhot 010020,China)

机构地区：[1]沈阳工业大学电气工程学院,辽宁沈阳110870 [2]国网内蒙古东部电力有限公司,内蒙古呼和浩特010020

出　　处：《可再生能源》2018年第8期1209-1213,共5页Renewable Energy Resources

基　　金：国家重点研发计划项目(2017YFB0902100)

摘　　要：针对风电场内风机叶片因应力过载造成的叶片损伤问题,研究了风机叶片攻角、偏航角度、叶片受力及风机出力之间的关系,在保证风场出力不变和叶片最佳应力的前提下,建立了风速风向动态变化过程中基于风速矢量的攻角和偏航参数鲁棒动态估计模型。为保障叶片迎风参数动态评估计算的实时性和准确性,文章基于Gauss-Newton(GN)方法,提出了风机攻角和偏航参数鲁棒动态估计模型的非线性迭代求解算法。针对某风电场内风机叶片应力建立了ANSYS数值仿真模型。仿真结果表明,文章所提出的模型能够对风机叶片迎风参数进行实时优化,有效地减小风力参数变化过程中风机叶片应力的不平衡。In order to solve the problem of blade damage caused by stress overload of fan blade in wind farm, the relationship model between blade angle of attack,yaw angle,blade stress and fan output is studied. Under the premise of constant wind field force and blade best stress,the robust dynamic estimation model of attack angle and yaw parameter based on wind speed vector is established. In order to ensure real-time and accuracy of real-time dynamic estimation of blade windward parameters,based on Gauss-Newton（GN）method,a nonlinear iterative algorithm for robust dynamic estimation of fan attack angle and yaw parameter is proposed in this paper. The ANSYS numerical simulation model is estab-lished for the blade stress of a fan in a wind farm. The simulation results show that the proposed model can optimize the winder blade windward parameters in real time and reduce the stress imbalance of the blade of the wind turbine effectively.

关 键 词：攻角 偏航 鲁棒估计 优化仿真 

分 类 号：TK89[动力工程及工程热物理—流体机械及工程]