【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。更多还原

【Abstract】 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.更多还原