风浪联合作用下海上TLP浮式风机动态响应分析

Dynamic Response Analysis of Offshore Turbine with TLP Floater Considering Wind and Wave

为分析风浪联合作用下海上TLP浮式风机动态特性,采用叶素动量理论,建立了考虑平台运动的风荷载计算程序,并用FAST进行验证。通过AQWA二次开发实时调用耦合平台运动的风荷载计算程序进行海上TLP浮式风机全耦合动态响应分析,研究了风、浪作用下TLP浮式风机平台及张力筋腱响应特性。结果表明,平台运动致使风荷载波动幅度增大,风荷载幅值在波频处出现峰值,分析中需考虑平台运动与风速之间的耦合效应;正常工况下风荷载使得TLP浮式风机运动响应幅值在低频处的数量级明显增大,整体分析中需详细计算风荷载的影响。

In order to analyze the dynamic response of TLP-5 MW floating wind turbine under the combined action of wind and wave.The wind loading calculation program which considers platform motion is established by using the blade element momentum,then verified by FAST.The full coupling dynamic response analysis of TLP-5 MW floating wind turbine was realized by using AQWA secondary development calls wind loading calculation program which coupled platform motion in every time.The response characteristics of the platform and the tendon under the wind-wave are studied.The results show that,the platform motion increases the fluctuation amplitude of wind loading,peak of wind loading amplitude at the wave frequency,the coupling effect between platform motion and wind speed should be considered.Under normal conditions,wind loading makes the magnitude of TLP floating wind turbine motion response amplitude increase obviously at the low frequency,the detailed calculation of wind loading is needed in the analysis.