Dynamic Response and Mooring Performance of a Semi-submersible Platform for Floating Wind Turbine Considering Typhoon Sea States

Journal of Chinese Society of Power Engineering ›› 2017, Vol. 37 ›› Issue (12) : 1015-1022.

HUANG Zhiqian¹, LI Chun^1,2, DING Qinwei¹, ZHOU Hongjie¹, CHEN Fudong¹

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To research the dynamic response and mooring performance of a semi-submersible platform for floating wind turbine, a NREL 5 MW wind turbine model was established based on the semi-submersible platform, with which, numerical simulation was conducted on dynamic response and mooring performance of the platform under extreme sea conditions using Aqwa software by finite element method considering the combined action of random wave, wind and current load with the radiation/diffraction theory, thus obtaining the response amplitude operator (R_AO), the additional mass and the rate of radiation damping changing with the wave frequency, as well as the dynamic response of the platform and the tension response of the mooring line under extreme sea conditions. Results show that the platform would have good motion performance with little dynamic response, as the wave frequency is high (above 1.6 rad/s); changes of wave directions have little effect on the heave response; severest responses of surge and pitch would happen in the wave direction of 0 degree; under typhoon sea states, both the peak of dynamic response of platform and the peak of tension response amplitude are above those without typhoon; the dynamic response of platform and the tension response of mooring line increase with worsening sea states.

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floating wind turbine / semi-submersible platform / typhoon sea state / mooring system / dynamic response

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HUANG Zhiqian, LI Chun, DING Qinwei, ZHOU Hongjie, CHEN Fudong. Dynamic Response and Mooring Performance of a Semi-submersible Platform for Floating Wind Turbine Considering Typhoon Sea States. Journal of Chinese Society of Power Engineering. 2017, 37(12): 1015-1022

References

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Received	Published
2016-12-05	2017-12-15
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2017-12-15

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