A semi - submersible platform was designed for wind energy exploration and response characteristics comprehension. In numerical simulation, the whole numerical model of motion response for floating offshore wind turbine was established by three parts: the aerodynamic load simulated through the wind pressure model as which the wind turbine was simplified; the hydrodynamic load calculated by potential theory and Morison equation; the damping force and mooring load gained by damping matrix. A 1/50 scale model was made for hydrodynamic test, in which the effect of heave plate is verified. Meanwhile, natural frequencies, damping coefficients and RAOs of the models in regular waves were obtained and the numerical results match well with the test data. The influences on the platform response characteristics by the aerodynamic load were studied numerically through statistic data and response spectrums under no wind condition and operation condition. The results have shown that the numerical model is efficient and is able to reflect the motion behavior of the platform; heave, pitch and surge RAOs can meet the requirements of platform design. Both the natural periods and the attenuation coeffcients of heave and pitch were increased by heave plate, and the stability of system is improved as a result. The aerodynamic load has beneficial effects on reducing the pitch response amplitude operator, though, will amplify pitch and surge response in resonance zone.
WU Haitao
,
ZHANG Liang
,
MA Yong
,
ZHAO Jing
,
JING Fengmei
. Design and Response Characteristics of a Semi-submersible Platform for Floating Offshore Wind Turbine[J]. Science & Technology Review, 2014
, 32(2)
: 15
-20
.
DOI: 10.3981/j.issn.1000-7857.2014.2.001
[1] Heronemus W E. Pollution-free energy from offshore winds[C]// Proceedings of Annual Conference and Exposition Marine Technology Society. Washington DC: Marine Technology Society, 1972: 21-25.
[2] 张亮, 吴海涛, 荆丰梅, 等. 海上漂浮式风力机研究进展及发展趋势[J]. 海洋技术, 2010, 29(4): 122-126. Zang Liang, Wu Haitao, Jing Fengmei, et al. Study on offshore floating wind turbine and its development[J]. Ocean Technology, 2010, 29(4): 122-126.
[3] Zambrano T, MacCready T, Kiceniuk T, Jr, et al. Dynamic modeling of deepwater offshore wind turbine structures in Gulf of Mexico storm conditions[C]. 25th International Conference on Offshore Mechanics and Arctic Engineering, Hamburg, Germany, June 4-9, 2006: 1-6.
[4] Bye A, Erbrich C, Rognlien B, et al Geotechnical design of bucket foundations[C] Offshore Technology Conference, Houston TX, US, May 1-4, 1995.
[5] Rasmussen J L, Feld T, Sørensen P H. Bucket Foundation for Offshore Wind Farms Comparison of Simplified Model and FE-Calculations[C]. OWEMES 2000, Sicilia, Italy, April 13-15, 2000.
[6] Feld T. Design procedures for bucket foundations—a new innovative foundation concept applied to offshore wind turbines[C]. Offshore Wind Energy Conference, Brussels, Belgium, December 10-12, 2001.
[7] Tang Yougang, Hu Jun, Liu Liqin. Study on the dynamic response for floating foundation of offshore wind turbine[C]. The ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering, Rotterdam, The Netherlands, June 19-24, 2011.
[8] 叶小嵘, 张亮, 吴海涛, 等. 平台运动对海上浮式风机的气动性能影响 研究[J]. 华中科技大学学报: 自然科学版, 2012, 40(3): 123-126. Ye Xiaorong, Zhang Liang, Wu Haitao, et al. Influence of platform motion response on aerodynamic performance of floating offshore wind turbine[J]. Journal of Huazhong University of Science and Technology: Natural Science Edition, 2012, 40(3): 123-126.
[9] Jonkman J, Butterfield S, Musial W, et al. Definition of a 5-MW reference wind turbine for offshore system development, NREL/TP-500-38060[R]. Golden: NREL, 2009.
[10] Martin O L Hansen. 风力机空气动力学[M]. 肖劲松, 译. 北京: 中国 电力出版社, 2009. Martin O L Hansen. Aerodynamics of wind turbines[M]. Xiao Jinsong, trans. Beijing: China Electric Power Press, 2009.
[11] Zambrano T, Cready T M, Kiceniuk T, et al. Dynamic modeling of deepwater offshore wind turbine structures in Gulf of Mexico storm conditions[C]. 25th International Conference on Offshore Mechanics and Arctic Engineering, Hamburg, Germany, June 4-9, 2006.
[12] 鲁效平, 李伟, 林勇刚, 等. 漂浮式海上风力发电机组独立变桨距控 制技术研究[J]. 太阳能学报, 2012, 33(4): 600-608. Lu Xiaoping, Li Wei, Lin Yonggang, et al. Research on the individual pitch control of floating offshore wind turbines[J]. Acta Energiae Solaris Sinica. 2012, 33(4): 600-608.
[13] 戴遗山, 段文洋. 船舶在波浪中运动的势流理论[M]. 北京: 国防工业 出版社, 2008. Dai Yishan, Duan Wenyang. Potential flow theory of ship motions in waves[M]. Beijing: National Defense Industry Press, 2008.
[14] Faltinsen O M. Sea loads on ships and offshore structures[M] Cambridge: Cambridge University Press, 1990.
