大型风力机塔架在脉动风下的动力响应特性研究
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摘要
采用Kaimal脉动风功率谱,考虑脉动风的空间相关性,采用AR模型模拟风电场脉动风速时程,并验证脉动风速谱与目标谱的一致性;通过有限元方法计算风力机塔架结构在风载荷作用下的动力响应特性。计算结果表明:AR模型对实际风场风速进行有效模拟,考虑脉动风的影响,塔架的风振响应显著增加;随着风速的增加,塔架的振动也随之增加,这为风力机塔架的风致响应分析和抗风研究提供了实用方法。
Considered the correlation of the fluctuating wind between spatial points,Kaimal power spectrum of pulsating wind and AR model are employed to simulate wind velocity of wind farm.The spectrum of pulsating wind was found in agreement with the target spectrum.The dynamic response of the wind turbine tower is analyzed by using the finite element analysis method under wind loads.The results show AR model is to simulate the actual wind velocity of wind farm effectively;the wind vibration response of the tower increases significantly induced the fluctuating wind: the vibration of the tower also increases with the wind speed increasing.A method applied to wind-induced response and wind resistance of the wind turbine tower is offered.
Considered the correlation of the fluctuating wind between spatial points,Kaimal power spectrum of pulsating wind and AR model are employed to simulate wind velocity of wind farm.The spectrum of pulsating wind was found in agreement with the target spectrum.The dynamic response of the wind turbine tower is analyzed by using the finite element analysis method under wind loads.The results show AR model is to simulate the actual wind velocity of wind farm effectively;the wind vibration response of the tower increases significantly induced the fluctuating wind: the vibration of the tower also increases with the wind speed increasing.A method applied to wind-induced response and wind resistance of the wind turbine tower is offered.
引文
[1]李俊锋.中国风电发展报告[M].北京:中国环境出版社,2012.
[2]国家风力发电工程技术研究中心.桑美正面袭击浙江苍南风电场遭受重大损失[EB/OL].http://www.nwtc.cn/Arti-cle/ShowArticle.aspArticleID=982.200.
[3]李春,叶舟.现代陆海风力机计算与仿真[M].上海:上海科学技术出版社,2012.
[4]谢峰,赵吉文.600KW风力机塔架结构的仿真设计[J].系统仿真学报,2004,16(1):70-72.
[5]贺德馨.风工程与工业空气动力学[M].北京:国防工业出版社,2006.
[6]袁波,应惠清.基于线性滤波法的脉动风速模拟及其MATLAB程序的实现[J].结构工程师,2007,23(4):55-61.
[7]李春祥,都敏,韩兵康.基于AR模型模拟超高层建筑的脉动风速时程[J].地震工程与工程振动,2008,28(3):87-94.
[8]李德源,刘胜祥.大型风力机筒式塔架涡致振动的数值分析[J].太阳能学报,2008,29(11):1432-1437.
[2]国家风力发电工程技术研究中心.桑美正面袭击浙江苍南风电场遭受重大损失[EB/OL].http://www.nwtc.cn/Arti-cle/ShowArticle.aspArticleID=982.200.
[3]李春,叶舟.现代陆海风力机计算与仿真[M].上海:上海科学技术出版社,2012.
[4]谢峰,赵吉文.600KW风力机塔架结构的仿真设计[J].系统仿真学报,2004,16(1):70-72.
[5]贺德馨.风工程与工业空气动力学[M].北京:国防工业出版社,2006.
[6]袁波,应惠清.基于线性滤波法的脉动风速模拟及其MATLAB程序的实现[J].结构工程师,2007,23(4):55-61.
[7]李春祥,都敏,韩兵康.基于AR模型模拟超高层建筑的脉动风速时程[J].地震工程与工程振动,2008,28(3):87-94.
[8]李德源,刘胜祥.大型风力机筒式塔架涡致振动的数值分析[J].太阳能学报,2008,29(11):1432-1437.
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