DYNAMIC RESPONSE ANALYSIS OF SEISMIC IMPACT ANGLE OF LARGE OFFSHORE WIND TURBINE

Niu Kailun; Yan Yangtian; Li Chun; Li Zhihao; Yue Minnan

doi:10.19912/j.0254-0096.tynxb.2021-0261

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Acta Energiae Solaris Sinica ›› 2022, Vol. 43 ›› Issue (11) : 292-302. DOI: 10.19912/j.0254-0096.tynxb.2021-0261

DYNAMIC RESPONSE ANALYSIS OF SEISMIC IMPACT ANGLE OF LARGE OFFSHORE WIND TURBINE

Niu Kailun¹, Yan Yangtian¹, Li Chun^1,2, Li Zhihao¹, Yue Minnan¹

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Abstract

In order to research the dynamic response of offshore wind turbines under different seismic impact angles, a soil-structure interaction model was constructed based on the p-y curve method, and a finite element model was established with DTU 10 MW monopile offshore wind turbine as the research object to study the impact of seismic impact angle changes on the seismic dynamic response of large offshore wind turbines. The results show that the seismic impact angles of 0° and 90° are the most violent angles of the wind turbine structure under load response. When the seismic impact angle is acute, the front-to-back and lateral displacement amplitude of the tower top decreases and the total strain energy accumulation is significantly alleviated. When the seismic impact angle is 15° and 30°, the equivalent stress of wind turbine decreases obviously compared with other angles. Therefore, actively adjusting the orientation of wind turbine wheels to adjust the seismic impact angle may be an effective control method to reduce the damage of wind turbines after being impacted by earthquakes.

Key words

offshore wind turbines / seismic response / dynamic response / seismic impact angle / p-y curve

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Niu Kailun, Yan Yangtian, Li Chun, Li Zhihao, Yue Minnan. DYNAMIC RESPONSE ANALYSIS OF SEISMIC IMPACT ANGLE OF LARGE OFFSHORE WIND TURBINE[J]. Acta Energiae Solaris Sinica. 2022, 43(11): 292-302 https://doi.org/10.19912/j.0254-0096.tynxb.2021-0261

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