考虑风向相关性的风电机组山地湍流风场模拟研究  

Simulation of wind field in micro-grid considering wind direction correlation

作　　者：杨春侠 于增豪 朱陶炜 Yang Chunxia;Yu Zenghao;Zhu Taowei(School of Civil Engineering,Changsha University of Science&Technology,Changsha 410114,China)

机构地区：[1]长沙理工大学土木工程学院,湖南长沙410114

出　　处：《可再生能源》2024年第6期812-819,共8页Renewable Energy Resources

基　　金：国家自然科学基金项目(51678067);国家自然科学基金青年科学基金项目(51808054)。

摘　　要：为了更加准确地进行风电机组结构时程响应计算,考虑风剪切、塔影和山地环境等对平均风速的影响,文章基于Kaimal自功率谱和纵向与竖向脉动风速分量互功率谱,采用谐波叠加法通过湍流相干模型建立空间三维且具备风向相关性的非平稳风场。选取某风电场2 MW风电机组为例进行实例分析,对模拟方法进行验证,并与不考虑风向相关性进行对比。模拟结果表明,风速时程数据特征符合预期,得到的模拟功率谱与目标谱吻合较好,考虑风向相关性可提高模拟吻合度。从而证明了模拟方法的准确性和必要性,实现了三维非平稳脉动风场的模拟。In order to calculate the time-history response of wind turbine structure more accurately,the influence of wind shear,tower shadow and mountain environment was considered.Based on Kaimal self-power spectrum and cross-power spectrum,the harmonic superposition method was used to simulate fluctuating wind speed.The spatial three-dimensional non-stationary wind field simulation method with wind direction correlation was established by using turbulence coherence model.Taking 2 MW wind turbine of a wind farm as an example,the correctness of the simulation method is verified and compared with the simulation results without considering the correlation of wind direction.The results from statistical analysis of simulated data and comparison with target spectrum demonstrated the accuracy and accuracy of the presented method,the simulation of three-dimensional non-stationary fluctuating wind field can be realized.The results from statistical analysis of simulated data and comparison with target spectrum demonstrated accuracy of the presented method,and considering the correlation of wind direction can improve the simulation coincidence,which proves the necessity of simulation method.

关 键 词：风电机组 谐波叠加法 非平稳脉动风 风向相关性 功率谱检验 

分 类 号：TK81[动力工程及工程热物理—流体机械及工程]