Impact analysis of offshore wind turbine structure frequency with different P-Y data

WANG Fan， ZHAO Meng-li， CHEN Xiao-jing， LIAN Xi-gang
（Shanghai Electric Windpower Equipment Co.，Ltd.， Shanghai 200241， China）

Abstract： The principal work of offshore wind turbine load calculation is the whole turbine modal analysis. The wind turbine operated between the safe and reasonable frequency range must be ensured. Aiming at this problem，based on Aeroflex and Bladed simulation platform simulated the whole offshore turbine frequency，the research model of Donghai bridge offshore was established. Different marine piles environment was considered in the whole turbine modal analysis，0.8 times P-Y data，1.2 times P-Y data and subsea piles scoured situation was considered. Two simulation software horizontal comparison results indicate that the model is established properly and the previous orders of modal analysis results are reasonable. The comparison results of the simulation analysis indicate that it is no sense for the whole offshore frequency changed with P-Y data small change.
Key words： offshore wind turbine； high rising structure foundation； P-Y data； modal analysis