Spar型浮式风机基础系泊系统研究
发布时间：2019-06-06 06:56
【摘要】：随着全球能源结构变化及化石能源的日益枯竭，近年来风能作为一种新型的可再生绿色能源逐渐走进人们的生活，风能的开发利用成为世界各国能源政策的重要方针。风力发电作为风能利用的一种有效地开发形式被各国学者予以研究，世界风电产业迅速发展。但近年来随着国内外陆上及近海风电场的建设使用，它们所带来环境影响和开发效益低等问题也逐渐被暴露。人们在寻找解决问题办法时,随着海洋工程技术的快速发展，开始把海上风电场选址逐渐移向了深海。因传统的固定式风机基础的造价会随着水深的加深快速增加，很难得到大规模发展，近年来深海浮式风电的开发利用成为人们研究的热点。 目前对于深海风电开发，能否在尽可能低成本的情况下设计研究出合适的基础结构及其配套的系泊系统是关系到浮式风电产业够否大规模发展的重大问题之一。国内外学者对此已经做了大量研究，但研究的重点多注重于基础的概念设计和结构的运动响应分析，对于浮式风电系泊系统的研究相对较少。而系泊系统作为浮式风电结构的重要组成部分，其投入成本在海上浮式风电的成本中占据着较大比例。因此在进行浮式风电结构设计时，系泊系统的设计占据着重要因素，对系泊系统性能进行研究具有现实的工程意义。本文以一座100米水深的3.6MW Spar型浮式风电基础为研究对象。从减小结构运动和系缆张力冲击为出发点，对该结构及其系泊系统的性能进行了详细研究，主要工作有： 1．建立了基础结构的三维水动力模型，利用三维势流理论在频域范围内计算了结构的水动力特性和运动性能，得到了结构的附加质量、附加阻尼、一阶波浪激励力以及运动响应传递函数。 2．研究了浮式风机张紧式和悬链线式两种不同型式的系泊系统，并在时域范围内对其进行了分析。以减少结构运动响应和系缆张力冲击为出发点，对比了两种系泊方式的优劣。研究表明对于海上浮式风电，张紧式系泊系统比悬链线系统有着更好的系泊性能。 3．采用时域分析的方法对浮式风机张紧式系泊系统进行了耦合响应分析，针对张紧式系泊系统的特点，以减小结构运动响应和系缆张力冲击为出发点，对比分析了不同系泊角度、不同系泊点位置以及不同预张力对系泊系统性能的影响。 4．设计制作了Spar型浮式风机基础及其系泊系统的模型，，并在波流水槽进行了波浪、海流荷载下的模型试验。从试验的角度分析了不同的预紧力设置对张紧式系泊系统性能的影响，并将试验结果与仿真结果进行了对比分析。
[Abstract]:With the change of global energy structure and the increasing depletion of fossil energy, wind energy, as a new type of renewable green energy, has gradually entered people's lives in recent years. The development and utilization of wind energy has become an important policy of energy policy in the world. Wind power generation, as an effective development form of wind energy utilization, has been studied by scholars all over the world, and the world wind power industry has developed rapidly. However, in recent years, with the construction and use of onshore and offshore wind farms at home and abroad, their environmental impact and low development efficiency have been gradually exposed. When people are looking for solutions to the problem, with the rapid development of marine engineering technology, the location of offshore wind farms has gradually moved to the deep sea. Because the cost of the traditional fixed fan foundation will increase rapidly with the deepening of water depth, it is difficult to get large-scale development. In recent years, the development and utilization of deep-sea floating wind power has become a hot research topic. At present, for the development of deep-sea wind power, whether the appropriate infrastructure and its supporting mooring system can be designed and studied at the lowest possible cost is one of the major issues related to the large-scale development of floating wind power industry. Scholars at home and abroad have done a lot of research on this, but the focus of the research focuses on the basic conceptual design and structural motion response analysis, the research on floating wind power mooring system is relatively small. As an important part of floating wind power structure, the input cost of mooring system accounts for a large proportion of the cost of offshore floating wind power. Therefore, the design of mooring system occupies an important factor in the design of floating wind power structure, so it is of practical engineering significance to study the performance of mooring system. In this paper, a 100m water depth 3.6MW Spartype floating wind power foundation is taken as the research object. From the point of view of reducing the motion of the structure and the tension impact of the mooring cable, the performance of the structure and its mooring system is studied in detail. The main work is as follows: 1. The three-dimensional hydrodynamic model of the infrastructure is established. The hydrodynamic and kinematic properties of the structure are calculated by using the three-dimensional potential flow theory in the frequency domain. The additional mass, additional damping, first-order wave excitation force and motion response transfer function of the structure are obtained. 2. Two different types of mooring systems, tension type and catenary type, of floating fan are studied and analyzed in time domain. In order to reduce the motion response of the structure and the tension impact of the mooring cable, the advantages and disadvantages of the two mooring modes are compared. The results show that the tensioned mooring system has better mooring performance than the catenary system for offshore floating wind power. 3. The coupling response analysis of floating fan tensionable mooring system is carried out by using the method of time domain analysis. According to the characteristics of tensioned mooring system, the starting point is to reduce the structural motion response and the impact of cable tension. The effects of different mooring angles, different mooring points and different pretension on the performance of mooring system are compared and analyzed. 4. The model of Spartype floating fan foundation and its mooring system is designed and made, and the model test under wave and current load is carried out in the wave and current flume. The influence of different pretightening force settings on the performance of tensioned mooring system is analyzed from the experimental point of view, and the test results are compared with the simulation results.
【学位授予单位】：中国海洋大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM315
本文编号：2494156
[Abstract]:With the change of global energy structure and the increasing depletion of fossil energy, wind energy, as a new type of renewable green energy, has gradually entered people's lives in recent years. The development and utilization of wind energy has become an important policy of energy policy in the world. Wind power generation, as an effective development form of wind energy utilization, has been studied by scholars all over the world, and the world wind power industry has developed rapidly. However, in recent years, with the construction and use of onshore and offshore wind farms at home and abroad, their environmental impact and low development efficiency have been gradually exposed. When people are looking for solutions to the problem, with the rapid development of marine engineering technology, the location of offshore wind farms has gradually moved to the deep sea. Because the cost of the traditional fixed fan foundation will increase rapidly with the deepening of water depth, it is difficult to get large-scale development. In recent years, the development and utilization of deep-sea floating wind power has become a hot research topic. At present, for the development of deep-sea wind power, whether the appropriate infrastructure and its supporting mooring system can be designed and studied at the lowest possible cost is one of the major issues related to the large-scale development of floating wind power industry. Scholars at home and abroad have done a lot of research on this, but the focus of the research focuses on the basic conceptual design and structural motion response analysis, the research on floating wind power mooring system is relatively small. As an important part of floating wind power structure, the input cost of mooring system accounts for a large proportion of the cost of offshore floating wind power. Therefore, the design of mooring system occupies an important factor in the design of floating wind power structure, so it is of practical engineering significance to study the performance of mooring system. In this paper, a 100m water depth 3.6MW Spartype floating wind power foundation is taken as the research object. From the point of view of reducing the motion of the structure and the tension impact of the mooring cable, the performance of the structure and its mooring system is studied in detail. The main work is as follows: 1. The three-dimensional hydrodynamic model of the infrastructure is established. The hydrodynamic and kinematic properties of the structure are calculated by using the three-dimensional potential flow theory in the frequency domain. The additional mass, additional damping, first-order wave excitation force and motion response transfer function of the structure are obtained. 2. Two different types of mooring systems, tension type and catenary type, of floating fan are studied and analyzed in time domain. In order to reduce the motion response of the structure and the tension impact of the mooring cable, the advantages and disadvantages of the two mooring modes are compared. The results show that the tensioned mooring system has better mooring performance than the catenary system for offshore floating wind power. 3. The coupling response analysis of floating fan tensionable mooring system is carried out by using the method of time domain analysis. According to the characteristics of tensioned mooring system, the starting point is to reduce the structural motion response and the impact of cable tension. The effects of different mooring angles, different mooring points and different pretension on the performance of mooring system are compared and analyzed. 4. The model of Spartype floating fan foundation and its mooring system is designed and made, and the model test under wave and current load is carried out in the wave and current flume. The influence of different pretightening force settings on the performance of tensioned mooring system is analyzed from the experimental point of view, and the test results are compared with the simulation results.
【学位授予单位】：中国海洋大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM315
【参考文献】
相关期刊论文 前3条
1 段金辉;李峰;王景全;程建生;;漂浮式风电场的基础形式和发展趋势[J];中国工程科学;2010年11期
2 黄维平;刘建军;赵战华;;海上风电基础结构研究现状及发展趋势[J];海洋工程;2009年02期
3 赵静;张亮;叶小嵘;吴海涛;;模型试验技术在海上浮式风电开发中的应用[J];中国电力;2011年09期
相关博士学位论文 前2条
1 任年鑫;海上风力机气动特性及新型浮式系统[D];哈尔滨工业大学;2011年
2 杨敏冬;深水浮式结构与系泊/立管系统的全时域非线性耦合动态分析[D];大连理工大学;2012年
本文编号：2494156
本文链接：https://www.wllwen.com/kejilunwen/dianlilw/2494156.html
教材专著
