风浪流中半潜式风机系统动力响应特性研究
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摘要
以三浮筒(Tri-floater)型半潜式风机系统为对象,采用时域方法,考虑垂荡板的黏性阻尼效应,研究系泊缆直径、长度、预张力和布置方式等参数对其在风浪流中动力响应特性的影响规律,提出了一种系泊参数优化方法。在此基础上,根据东海和南海三个不同水深区域百年一遇海洋环境条件,通过调整Tri-floater型浮式基础的吃水和垂荡板等参数,有效地提高了其运动响应周期,减小了其运动响应幅值。同时,根据风机浮式基础运动幅值的设计规范要求,针对三个不同水深区域特点,设计了Tri-floater型浮式基础的系泊系统。计算结果表明,改进后的Tri-floater型半潜式风机系统能满足百年一遇极端环境下的作业要求,适合于东海和南海海洋环境下海上风能资源的开发。
By taking the effects of viscous damping into account,a time domain analysis is proposed for analyzing the effect of the mooring system parameters on the dynamic responses of the Tri-floater semi-submersible offshore wind turbine in wind,wave and current,and then an optimization scheme is presented for the mooring line diameter,length,pre-tension and arrangement.Meanwhile,based on once-in-a-century met ocean data in the East and South China Seas,a modification scheme is presented for the draft and heave plate diameter of the original Tri-floater wind turbine so that the motion periods are significantly increased,and the response performances are effectively improved for such a modified Tri-floater wind turbine.Moreover,based on the design standard for the floating wind turbine system,a design scheme is presented for the mooring system of such a modified Tri-floater wind turbine according to three different water depth conditions in the East and South China Seas.Results show that the modified Tri-floater wind turbine can meet the operation demand under once-in-a-century extreme conditions,and hence suitable for the exploitation of offshore wind resources in the East and South China Seas.
By taking the effects of viscous damping into account,a time domain analysis is proposed for analyzing the effect of the mooring system parameters on the dynamic responses of the Tri-floater semi-submersible offshore wind turbine in wind,wave and current,and then an optimization scheme is presented for the mooring line diameter,length,pre-tension and arrangement.Meanwhile,based on once-in-a-century met ocean data in the East and South China Seas,a modification scheme is presented for the draft and heave plate diameter of the original Tri-floater wind turbine so that the motion periods are significantly increased,and the response performances are effectively improved for such a modified Tri-floater wind turbine.Moreover,based on the design standard for the floating wind turbine system,a design scheme is presented for the mooring system of such a modified Tri-floater wind turbine according to three different water depth conditions in the East and South China Seas.Results show that the modified Tri-floater wind turbine can meet the operation demand under once-in-a-century extreme conditions,and hence suitable for the exploitation of offshore wind resources in the East and South China Seas.
引文
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[14]戴遗山.舰船在波浪中运动的频域与时域势流理论[M].北京:国防工业出版社,1998.(DAI Yishan.Frequency and time domain theory for ship motion in waves[M].Beijing:Defense Industrial Press,1998.(in Chinese))
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[17]李梦阳.海上浮式风力机平台锚泊系统设计与研究[D].哈尔滨:哈尔滨工程大学,2013.(LI Mengyang.Study on mooring system of floating offshore wind turbine platform[D].Harbin:Harbin Engineering University,2013.(in Chinese))
[18]ZAMBRANO T,MACCREADY T,KICENIUK T,et al.Dynamic modeling of deepwater offshore wind turbine structures in Gulf of Mexico storm conditions[C]//Proceedings of the 25th International Conference on Offshore Mechanics and Arctic Engineering.2006:629-634.
[2]李春,叶舟,高伟,等.现代陆海风力机计算与仿真[M].上海:上海科学技术出版社,2012.(LI Chun,YE Zhou,GAO Wei,et al.Caculation and simulation for modern land and ocean wind turbine[M].Shanghai:Shanghai Science and Technology Press,2012.(in Chinese))
[3]尚景宏.海上风力机基础结构设计选型研究[D].哈尔滨:哈尔滨工程大学,2010.(SHANG Jinghong.Study on the design and selection of offshore wind turbine foundation structure[D].Harbin:Harbin Engineering University,2010.(in Chinese))
[4]BULDER B H,HENDERSON A,HUIJSMANS R,et al.Study to feasibility of and boundary conditions for floating offshore wind turbines[R].ECN,MARIN,TNO,TUD,MSC,Lagerway the Windmaster,2002.
[5]ANDREW R H,BERNARD B.Feasibility study of floating windfarms in shallow offshore sites[J].Wind Engineering,2003,27(5):405-418.
[6]RODDIER D,CERMELLI C,WEINSTEIN A.Wind Float:a floating foundation for offshore wind turbine-Part I:design basis and qualification process[C]//Proceedings of the 28th International Conference on Ocean,Offshore and Arctic Engineering,OMAE2009.2009:845-853.
[7]CERMELLI C,RODDIER D,AUBAULT A.Wind Float:a floating foundation for offshore wind turbines-Part II hydrodynamics analysis[C]//Proceedings of the 28 th International Conference on Ocean,Offshore and Arctic Engineering,OMAE2009,2009:135-143.
[8]AUBAULT A,CERMELLI C,RODDIER D.Wind Float:a floating foundation for offshore wind turbines-Part III:structural analysis[C]//Proceedings of the 28th International Conference on Ocean,Offshore and Arctic Engineering,OMAE2009.2009:213-220.
[9]CHRISTIAN A C,DOMINIQUE G R.Experimental and numerical investigation of the stabilizing effects of a water-entrapment plate on a deepwater minimal floating platform[C]//Proceedings of the 24th International Conference on Offshore Mechanics and Arctic Engineering.2005:517-525.
[10]ISHIHARA T,PHU P V,SUKEGAWA H,et al.A study on the dynamic response of a semi-submersible floating offshore wind turbine system Part 1:A water tank test[C]//Proceedings of the 12th ICWE.2007:2511-2518.
[11]PHU P V,ISHIHARA T.A study on the dynamic response of a semi-submersible floating offshore wind turbine system Part 2:numerical simulation[C]//Proceedings of the 12th ICWE.2007:959-966.
[12]曹菡,唐友刚,陶海成,等.半潜型风机浮式基础设计及幅频运动特性研究[J].海洋工程,2013,31(2):61-67.(CAO Han,TANG Yougang,TAO Haicheng,et al.Design and frequency domain analysis of semi-submersible floating foundation for offshore wind turbine[J].The Ocean Engineering,2013,31(2):61-67.(in Chinese))
[13]吴海涛,张亮,马勇,等.半潜式海上风力机平台随机响应特性分析[J].华中科技大学学报:自然科学版,2014,42(5):111-121.(WU Haitao,ZHANG Liang,MA Yong,et al.Stochastic response characteristics analysis of semisubmersible platform for floating offshore wind turbine[J].J.Huazhong Univ.of Sci.&Tech.,Natural Science Edition,2014,42(5):111-121.(in Chinese))
[14]戴遗山.舰船在波浪中运动的频域与时域势流理论[M].北京:国防工业出版社,1998.(DAI Yishan.Frequency and time domain theory for ship motion in waves[M].Beijing:Defense Industrial Press,1998.(in Chinese))
[15]RODDIER D,PEIFFER A,AUBAULT A,et al.A generic 5 MW Wind Float for numerical tool validation&comparison against a generic spar[C]//Proceedings of the 30th International Conference on Ocean,Offshore and Arctic Engineering.2011:OMAE2011-50278.
[16]中国船级社.海上移动平台入级与建造规范[S].北京:人民交通出版社,2005.(China Classification Society.Rules for construction and classification of mobile offshore drilling units[S].Beijing:China Communications Press,2005.(in Chinese))
[17]李梦阳.海上浮式风力机平台锚泊系统设计与研究[D].哈尔滨:哈尔滨工程大学,2013.(LI Mengyang.Study on mooring system of floating offshore wind turbine platform[D].Harbin:Harbin Engineering University,2013.(in Chinese))
[18]ZAMBRANO T,MACCREADY T,KICENIUK T,et al.Dynamic modeling of deepwater offshore wind turbine structures in Gulf of Mexico storm conditions[C]//Proceedings of the 25th International Conference on Offshore Mechanics and Arctic Engineering.2006:629-634.