摘要
为了提高大型海上风机单叶片高空对接过程的效率和安全性,建立了大型海上风机单叶片高空对接过程的力学分析模型。以NERL 5MW标准海上风机叶片为研究对象,借助于欧拉角旋转矩阵,首先分析了叶片在高空安装作业时不同空中姿态下风载荷对其升力、阻力及俯仰矩的影响规律;然后建立了以叶片为研究对象的准静态力学平衡方程组,对其6个自由度进行准静态平衡分析,研究了高空中风速变化对吊索和缆风绳中的控制力大小和方向所造成的影响。通过解有约束的线性方程组,给出了叶片在保持某一空中姿态下使系统保持准静态平衡时缆风绳中所需的最小拉力,并研究了吊索作用位置及风速变化对缆风绳中拉力的影响规律。分析结果表明,当吊索的作用位置偏离叶片重心时,其对叶片有较大的力矩作用,为了平衡其力矩作用,相同风速下两条缆风绳中的拉力显著增大。因此要保证单叶片在高空中的安全对接,要合理地控制吊索的吊装位置,避免其偏离叶片重心过远,导致缆风绳承受过大的平衡拉力。研究将为大型海上风机单叶片的高空对接过程提供理论指导,并为缆风绳及吊索对应的自动控制系统的设计及优化提供设计参考。
In order to improve the efficiency and safety of the mating process of single blade installation for large offshore wind turbines(OWT)in high altitude,a mechanical analysis model of the mating process of single blade installation for large OWT has been established.The single blade of NERL 5MW reference OWT was taken as the research object,with the help of Euler angle rotation matrix,firstly,the variational principle of wind load on its lift,resistance and pitch moment under different attitude when the blade was installed at high altitude in air were analyzed.Then,a set of quasi-static mechanical equilibrium equations was established with respect to the blade,and the quasi-static equilibrium analysis of its six degrees of freedom was carried out.The influence of the change of wind velocity in the upper air on the magnitude and direction of the control force in the sling and tugger lines was studied.By solving the constrained linear equations,the minimum pull forces required in the tugger lines when the blade maintains a quasi-static balance of the system under a certain attitude was found,and the influence of the sling position and the change of wind speed on the pull force in the tugger lines was studied.The analysis results show that when the load position of the sling deviates from the center of gravity of the blade,it has a large torque effect on the blade.In order to balance its torque effect,the tension in the two tugger lines increases significantly under the same wind velocity.Therefore,to ensure the safe mating of single blades at high altitude,it is necessary to reasonably control the hoisting position of the sling to avoid its deviation from the center of gravity of the blade too far,leading to excessive balance tension in the tugger lines.The study will provide theoretical guidance for the mating process of single blades for installation of large OWT,and provide design reference for the design and optimization of the automatic control system corresponding to the tugger lines and sling.
作者
蔡舒鹏
张永康
金晔
梁岩峰
姜季江
薛驰
林峰
Cai Shupeng;Zhang Yongkang;Jin Ye;Liang Yanfeng;Jiang Jijiang;Xue Chi;Lin Feng(School of Mechanical and Electrical Engineering,Guangdong University of Technology,Guangzhou 510006,China;CRCC Harbour&Channel Engineering Bureau Group Co.,Ltd.,Zhuhai,Guangdong 519075,China;COSCO Shipping(Qidong)Offshore Co.,Ltd.,Qidong,Jiangsu 226251,China;COSCO Shipping Heavy Industry Co.,Ltd.,Shanghai 200135,China;Zhongtian Technology Co.,Ltd.,Nantong,Jiangsu 226000,China)
出处
《机电工程技术》
2022年第10期17-21,25,共6页
Mechanical & Electrical Engineering Technology
基金
国家自然科学基金项目(编号:52001069)
佛山市科技创新项目(编号:2018IT100112)。
关键词
海上风机
单叶片高空对接
欧拉角
准静态平衡
带约束线性方程组
offshore wind turbine(OWT)
single blade mating in high altitude
Euler angle
quasi-static equilibrium
constrained linear equations
