叶片结构对叶片风能利用率及载荷的影响分析  

Influence Analysis of Blade Structure on Wind Energy Utilization and Load

作　　者：张晓磊 薛艳华 瞿沐淋 王伟 ZHANG Xiaolei;XUE Yanhua;QU Mulin;WANG Wei(Mingyang Smart Energy Group Limited,Zhongshan 528437,China)

机构地区：[1]明阳智慧能源集团股份公司,广东中山528437

出　　处：《机械工程师》2023年第12期120-123,126,共5页Mechanical Engineer

摘　　要：针对叶片结构设计过程中叶片结构变化对风电机组性能及安全性的影响,利用GH Bladed对某73.2 m叶片进行仿真计算,通过探究扭转刚度、摆振刚度、抗弯刚度对风电机组的净空、风能利用率、发电量及载荷的影响,分析不同的刚度变化情况对机组性能及安全性的影响程度,为叶片结构设计提供依据,更加快速准确地推进叶片设计进程。结果表明,在提高发电量的前提下,叶片结构调整应该增加叶片扭转刚度和挥舞刚度,降低叶片摆振刚度,提高叶片挥舞刚度能够明显提高叶片净空及发电量,但同时会增加叶根载荷;在降低叶根合弯矩载荷的前提下,叶片结构调整应该增加叶片扭转刚度,增加叶片摆振刚度,降低叶片挥舞刚度。因此在实际调整中,需要根据载荷和发电量的实际情况进行平衡。Aiming at the influence of blade structure change on wind turbine performance and safety in the process of blade structure design,this paper uses GH Bladed to simulate a 73.2 m blade,and explores the influence of torsional stiffness,pendulum stiffness and flexural stiffness on wind turbine headroom,wind energy utilization rate,power generation and load.The influence degree of different stiffness changes on unit performance and safety is analyzed to provide a basis for blade structure design,which can promote the process of blade design more quickly and accurately.The results show that,on the premise of increasing the energy yield,the blade adjustment should increase the torsional and flapping stiffness of the blade,and reduce the swing-array stiffness of the blade.Increasing the flapping stiffness of the blade can significantly improve the blade headroom and energy yield,but also increase the blade root load.On the premise of reducing the bending moment load of the blade,we should increase the torsion stiffness of the blade,increase the swing-array stiffness of the blade,and reduce the flapping stiffness of the blade in the blade adjustment process.Therefore,in the actual adjustment,it is necessary to balance according to the actual situation of load and power generation.

关 键 词：发电机组 叶片刚度 发电量 净空 叶根载荷 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程]