论文部分内容阅读
平台的稳定性是海上漂浮式风力机安全运行的基本保障。研究两种新型系泊型式对海上漂浮式风力机Spar平台动态响应的影响及系泊的安全性。建立基于OC3-Hywind Spar Buoy平台的NREL(美国国家可再生能源实验室)5 MW漂浮式风力机整机模型,综合考虑叶片空气动力载荷、平台的波浪载荷及平台与系泊系统的耦合。首先,验证水动力学模型的可靠性,然后分析平台在不同风浪下的时域动态响应,并评估其生存能力。结果表明:两种新型系泊型式均能大幅减小纵荡响应,对纵摇响应影响很小;型式Ⅰ对纵荡响应的抑制小于型式Ⅱ,且二者对纵荡的抑制作用随系泊间夹角的增加而减小;型式Ⅲ-30°系泊在完整状态下的安全系数大于1.67,破损状态下大于1.33,均满足设计要求。
The stability of the platform is the basic guarantee for the safe operation of offshore floating wind turbine. The effect of two new mooring patterns on the dynamic response of the Spar platform and the safety of mooring are studied. Based on the OC3-Hywind Spar Buoy platform, NREL (National Renewable Energy Laboratory) 5 MW floating wind turbine model is established, taking into account the aerodynamic loads of the blades, the wave loads of the platform and the coupling between the platform and the mooring system. First of all, the reliability of the hydrodynamic model is verified, then the dynamic response of the platform under different storm waves is analyzed and its survivability is evaluated. The results show that both new types of mooring can significantly reduce the longitudinal response and have little effect on the longitudinal response. The type Ⅰ can suppress the longitudinal response less than that of the type Ⅱ, The angle between them increases and decreases; the safety factor of type Ⅲ-30 ° mooring in the intact state is greater than 1.67, and the damage state is greater than 1.33, all meeting the design requirements.