风浪异向下漂浮式风电场平台动态响应研究

为研究风浪异向下海上漂浮式风电场平台运动响应，建立基于ITI Energy Barge平台的漂浮式风力机及共用系泊的二阶阵列漂浮式风电场模型，运用水动力学软件AQWA与风力机仿真软件OpenFAST分别对水动与气动载荷进行计算，分析了风浪异向下二阶阵列漂浮式风电场Barge平台时频响应特性。结果表明：频域内，Barge平台响应主要集中在低频区域，波浪方向对纵摇和纵荡响应影响较大，对垂荡响应影响较小；时域内，纵摇和艏摇自由度背风侧平台响应幅值明显大于迎风侧平台；风电场各平台在横荡、横摇上的响应幅度随波浪入射角度的增大而增大，纵荡和垂荡自由度则几乎不受影响。

Research on Dynamic Response of Floating Wind Farm Platform under Wind wave Misalignment

In order to study the motion response of offshore floating wind farm platform under wind wave misalignment, a floating wind turbine based on ITI Energy Barge platform and a second order array floating wind farm model with shared mooring were established. The hydrodynamic and aerodynamic loads were calculated by using hydrodynamic software AQWA and wind turbine simulation software OpenFAST respectively, and the time frequency response characteristics of the Barge platform of the second order array floating wind farm were analyzed under wind wave misalignment. The results show that in the frequency domain, the response of the Barge platform is mainly concentrated in the low frequency area, and the wave direction has great influence on the pitching and surging responses, but has little influence on the heaving response. In the time domain, the response amplitudes of the leeward platform is significantly greater than that of the windward platform in the degree of freedom of pitching and yawing. The response amplitudes of each wind farm platform on swaying and rolling increase with the increase of wave incidence angle, while the degrees of freedom of surging and heaving are almost unaffected.