Spar风机非稳态动力响应分析  

Unsteady dynamic response analysis of Spar wind turbine

作　　者：俞玉莲 苟洪顺 邢启险 孟珣[1] YU Yu-lian;GOU Hong-shun;XING Qi-xian;MENG Xun(College of Engineering,Ocean University of China,Qingdao 266100,China)

机构地区：[1]中国海洋大学工程学院

出　　处：《水道港口》2019年第6期694-699,共6页Journal of Waterway and Harbor

基　　金：国家自然科学基金资助项目(51490675)

摘　　要：文章采用多体动力学仿真器FAST,研究5MW OC3 Hywind Spar浮式风机平台非稳态动力响应,计算工况为JONSWAP海浪谱,有义波高6.8 m,谱峰周期10.2 s,流速0.642 m/s,波浪、流和风方向均为0°。研究结果表明在气动载荷影响下,风机运行相比于风机停机时,浮式平台垂荡运动幅值减小,而平台纵荡和纵摇的运动幅度增加到2.1和1.5倍,其他自由度的运动幅度增加到1.2~1.8倍,平台系泊张力响应幅度最大增加到4倍。此外发现相对于风机正常运行情况,风机启动过程中平台的纵荡运动幅值增加19.3%,引起平台大幅度漂移运动,导缆孔张力增加10%。气动载荷主要影响平台6个自由度运动的最值和均值,而对平台系泊张力主要影响其标准差,建议研究浮式风机基础的运动响应及系泊张力应考虑风机运行的气动载荷。The multi-body dynamics simulator FAST,which was developed by the National Renewable Energy Laboratory,was used to study the unsteady dynamic response of the 5MW OC3 Hywind Spar floating wind turbine under the combined action of wind,wave and current.The results show that under the effects of the dynamic aerodynamic load,compared to the shutdown status of wind turbine,the amplitudes of heave motion of the floating platform are decreased during the operation status,the amplitudes of surge and pitch of the platform are increased to 2.1 and 1.5 times respectively,while the motions of other degrees of freedom are increased to 1.2-1.8 times,and the response amplitudes of mooring tension are increased to a factor of four at most.Furthermore,compared to the operation status,the amplitudes of the pitch of the platform are increased by 19.3% during the process of startup of wind turbine,which cause large drift of the platform,and the fairlead tension would increase by 10%.In conclusion,the maximum and the mean value of the six degrees of freedom motions of the platform are mainly affected by the aerodynamic load,while the standard deviation of the mooring tension of the platform is mainly affected by the aerodynamic load.Consequently,it is necessary to consider the aerodynamic load of uptime when study on the motion response and the mooring tension of the floating foundation of wind turbine.

关 键 词：浮式风机 Spar 运动响应 气动载荷 

分 类 号：P752[天文地球—海洋科学]