基于AR模型的海上风机脉动风速时程模拟  

Time-history Simulation of Fluctuating Wind Speed of Offshore Wind Turbine Based on AR Model

作　　者：骆光杰 朱洪泽 郭健 苏凯[2,3,4] LUO Guangjie;ZHU Hongze;GUO Jian;SU Kai(Zhejiang Huadong Engineering Consulting Co.,Ltd.,Hangzhou 310014,Zhejiang,China;State Key Laboratory of Water Resources and Hydropower Engineering Science(Wuhan University),Wuhan 430072,Hubei,China;Key Laboratory of Rock Mechanics in Hydraulic Structural Engineering(Ministry of Education),Wuhan University,Wuhan 430072,Hubei,China;Hubei Provincial Key Lab of Water System Science for Sponge City Construction(Wuhan University),Wuhan 430072,Hubei,China)

机构地区：[1]浙江华东工程咨询有限公司,浙江杭州310014 [2]水资源与水电工程科学国家重点实验室(武汉大学),湖北武汉430072 [3]武汉大学水工岩石力学教育部重点实验室,湖北武汉430072 [4]武汉大学海绵城市建设水系统湖北省重点实验室,湖北武汉430072

出　　处：《水力发电》2022年第3期99-103,107,共6页Water Power

基　　金：国家自然科学基金资助项目(51379159)。

摘　　要：为分析海上风机支撑结构及叶片的风振动力响应特性,基于线性滤波法中自回归AR模型,采用Kaimal脉动风速功率谱编制了具备时空相关特性的MATLAB脉动风速时程模拟程序;针对江苏如东黄海海域某4 MW级风机塔筒、叶片等结构进行了实例分析,得到结构表面各控制点模拟脉动风速时程曲线,并结合计算功率谱与目标谱进行对比验证;利用TurbSim软件对自编程序计算精度和效率进行比较。相关计算结果表明该程序简单易操作,所需参数较少;虽无法考虑湍流强度,但具有适用多种风机结构的优点;同时整体模拟效果良好,可有效解决风荷载输入问题。In order to analyze the wind-induced response characteristics of the support structures and blades of offshore wind turbine,a fluctuating wind speed time-history simulation program with space-time correlation characteristics is compiled within the platform of MATLAB based on the auto-regression(AR) model in the linear filtering method and using the Kaimal fluctuating wind speed power spectrum.According to the actual offshore wind project located in Yellow Sea,Jiangsu,the fluctuating wind speed time-history curve at each control point on the surface of tower and blades of a 4-MW wind turbine is obtained,furthermore,the simulation results are verified with the target power spectral density function.Finally,the TurbSim is introduced to compare the accuracy and efficiency of the self-compiling program.The results show that the proposed program is applicable to simulate the fluctuating wind velocity time series of offshore wind turbines without many parameters,and although the turbulent intensity cannot be taken into account within this program,it has the advantage of no restrictions on key points of any structure.Meanwhile,the overall simulation effect is good,and it can effectively solve the problem of dynamic-wind load input.

关 键 词：海上风机 脉动风速时程 AR模型 功率谱 MATLAB平台 数值模拟 

分 类 号：TM71[电气工程—电力系统及自动化]