平台稳定性是漂浮式风力机安全运行的基础。复杂海洋环境下,漂浮式风力机整机受到风、浪及流等多种环境载荷作用产生激励运动,进而影响其正常工作。本文以漂浮式风力机Spar平台为研究对象,借鉴“铁索连舟”增强船舶稳定性的思想,建立了共用系泊系统基于Spar平台漂浮式风电场。运用水动力学软件AQWA,采用辐射/衍射理论并结合有限元方法,研究了风、浪及流载荷联合作用下多平台的动态响应特性,提出了增大系泊链接点半径的方法对所提出的漂浮式风电场中平台艏摇运动进行抑制。结果表明：频域分析中,Spar平台在纵荡方向上的幅值响应算子随频率增加逐渐减小,最后趋向于零；在垂荡和纵摇方向上,幅值响应算子随频率增加先增加后减小,最后趋向于零,且峰值频率在低频区域。时域分析中,较之于单平台,漂浮式风电场平台在纵荡、横荡方向上的位移均得到了一定程度的减小,横摇及艏摇运动响应亦得到了抑制。增大系泊链接点半径的方法对于抑制漂浮式风电场平台艏摇响应效果明显。

The stability of the platform is the basis for the safe operation of floating wind turbines. In the complex marine environment, the floating wind turbine is subjected to various environmental loads such as wind, waves and current to generate motion, which in turn affects normal work. The Spar platform of floating wind turbine is taken as the object, and the idea of “iron rope connection” to enhance the stability of the ship is used. The floating wind farm based on Spar platform is established, the numerical simulation hydrodynamic software AQWA combined with the finite element is used to analyze the dynamic response characteristics of multi-platform under the combined action of wind, wave and current loads, and the methord increasing the radius of mooring link points suppress the yaw. The results show that in the frequency domain, the RAO of the Spar platform decreases in the surge with the increase of frequency, and tends to zero finally. In the direction of heave and pitch, the RAO increase and then decrease with the increases of frequency, and finally tends to zero, and the peak frequency is in the low frequency region. In the time domain, compared with the single platform, the floating wind farm platform in the surge and sway has been reduced to some extent, and the response of roll and yaw motion is also suppressed. The method increasing the radius of the mooring link point has obvious effect on suppressing the response of the floating wind farm platform.

国家自然科学基金项目（面上项目，重点项目，重大项目）；国家自然基金国际(地区)合作与交流项目；上海市“科技创新行动计划”地方院校能力建设项目