Dynamic Response of Floating Wind Farm Platform of Spar-type Offshore Platform under Extreme Sea Conditions

Abstract

The stability of the platform is the basis for the safe operation of floating wind turbines.In this paper,the Spar platform of floating wind turbine is taken as the research 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,and 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.The results show that in the frequency domain,the RAO of the Spar platform decreases with the increase of frequency,and tends to zero finally.In the dire ction of heave and pitch,the RAO increases and then decreases with the increase 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 surge and sway of floating wind farm platform have been reduced to some extent,and the response of roll and yaw motion is also suppressed.The method of increasing the radius of the mooring link point has evident effect on suppressing the response of the floating wind farm platform.