风力发电支撑结构动力性能研究

Study on Dynamic Performance of the Supporting Structure for Wind Power

随着风力发电的快速发展,对风电支撑结构的动力性能研究逐步深入,裹冰厚度及复合材料的使用影响风电结构的动力性能。通过使用ANSYS有限元软件分析支撑结构的动力性能,研究裹冰厚度和复合材料对结构动力性能的影响。当裹冰厚度达到60 mm时,风电塔架自振频率降低幅度大于15%,同时风电支撑结构的承载力随复合材料弹性模量增大而增大。风电支承结构动力特性的研究可为风载和地震的动力响应研究提供参考,对结构的设计安全起重要作用。

With the development of the wind turbine, the dynamic performance of the wind power support struc-ture research gradually deepened. The ice thickness and composite materials affected the dynamic performance of the supporting structure. The dynamic performance of the structure was simulated by ANSYS program, in order to investigate the influence on the dynamic performance of structure with variation of the ice thickness and composite materials. When wrapped ice thickness reaches 60 mm, the natural frequency of support structure decreased more than 15% , and the larger the elastic modulus of the composite, the greater the bearing capacity of the structure. The study of the dynamic characteristics could provide reference for the dynamic response of the wind and earth-quake, and played an important role in the safety management of structural design.