本文選題：海上風(fēng)電浮式基礎(chǔ)　切入點(diǎn)：Cell　出處：《華南理工大學(xué)》2014年碩士論文

【摘要】：隨著大型海上風(fēng)機(jī)技術(shù)的快速發(fā)展，海上風(fēng)力發(fā)電已成為未來(lái)風(fēng)能利用的新趨勢(shì)。然而當(dāng)前正蓬勃發(fā)展的固定式海上風(fēng)電場(chǎng)與近海旅游、港口建設(shè)、既定航線、濕地保護(hù)等諸多既有海洋開發(fā)規(guī)劃存在沖突，且受到水深的限制，面臨著嚴(yán)重的發(fā)展瓶頸。因而未來(lái)海上風(fēng)力發(fā)電必走向深藍(lán)，發(fā)展浮式基礎(chǔ)支撐式深水大型風(fēng)電場(chǎng)具有現(xiàn)實(shí)意義。然而，海上風(fēng)電浮式基礎(chǔ)所處海洋環(huán)境復(fù)雜，，大型海上風(fēng)力發(fā)電機(jī)組結(jié)構(gòu)重量大和重心偏高，且運(yùn)轉(zhuǎn)時(shí)會(huì)傳遞的巨大的風(fēng)傾力矩，這導(dǎo)致了研發(fā)能夠?yàn)榇笮秃Ｉ巷L(fēng)機(jī)正常工作提供穩(wěn)定支撐，運(yùn)動(dòng)性能優(yōu)越且經(jīng)濟(jì)可靠的海上風(fēng)電浮式基礎(chǔ)極具挑戰(zhàn)性。 本文將海上采油平臺(tái)Cell Spar的結(jié)構(gòu)設(shè)計(jì)理念引入到海上風(fēng)力發(fā)電浮式基礎(chǔ)的研發(fā)中，提出了海上風(fēng)電Cell Spar浮式基礎(chǔ)的概念設(shè)計(jì)，并展開了浮式基礎(chǔ)運(yùn)動(dòng)特性的深入研究，為海上風(fēng)電Cell Spar浮式基礎(chǔ)的優(yōu)化設(shè)計(jì)和運(yùn)動(dòng)特性研究提供了理論保證和技術(shù)支持。首先基于三維頻域勢(shì)流理論，針對(duì)垂蕩板數(shù)量、水深、重心高度的變化對(duì)CellSpar浮式基礎(chǔ)的水動(dòng)力性能的影響進(jìn)行深入探究；通過與原型Spar模型比較，驗(yàn)證CellSpar的水動(dòng)力性能，并為采用原型Spar進(jìn)行基于粘性流理論的運(yùn)動(dòng)特性研究提供依據(jù)。接著，研究了浮筒式懸鏈線系泊系統(tǒng)與傳統(tǒng)懸鏈線系泊系統(tǒng)的時(shí)域運(yùn)動(dòng)耦合響應(yīng)，得出浮筒式懸鏈線系泊系統(tǒng)的更適合海上風(fēng)電Cell Spar浮式基礎(chǔ)的結(jié)論。基于此考慮不同風(fēng)速、浪高和浪向?qū)υ撓挡聪到y(tǒng)的影響，并對(duì)極端海況下系泊纜斷裂后對(duì)系泊系統(tǒng)的影響進(jìn)行分析研究。然后，基于三維波浪數(shù)值水池模型技術(shù)，建構(gòu)了基于粘性流理論的波浪與海上風(fēng)電Cell Spar浮式基礎(chǔ)相互作用的數(shù)值模擬計(jì)算體系，對(duì)規(guī)則波作用下Cell Spar浮式基礎(chǔ)的流場(chǎng)、受力以及運(yùn)動(dòng)響應(yīng)進(jìn)行分析。最后，發(fā)展了基于粘性流理論的全尺寸海洋平臺(tái)及海洋浮式結(jié)構(gòu)物的強(qiáng)迫振蕩運(yùn)動(dòng)試驗(yàn)數(shù)值水池技術(shù)，分別研究了垂蕩板和海上風(fēng)電Cell Spar浮式基礎(chǔ)在強(qiáng)迫振蕩運(yùn)動(dòng)過程中的流場(chǎng)和受力等運(yùn)動(dòng)特性，研究結(jié)果表明海上風(fēng)電Cell Spar浮式基礎(chǔ)粘性阻尼并不隨著垂蕩板的數(shù)量增加而線性增加，且受到Spar浮式基礎(chǔ)的硬艙和軟艙遮蔽作用而衰減。這為后續(xù)的垂蕩板優(yōu)化提供理論支持，為海上風(fēng)電浮式基礎(chǔ)的垂蕩性能預(yù)估提供了一種新的思路和方法。
[Abstract]:With the rapid development of large-scale offshore wind turbine technology, offshore wind power generation has become a new trend of wind power utilization in the future. However, the current vigorous development of fixed offshore wind farms and offshore tourism, port construction, established routes, Many existing marine development plans, such as wetland protection, are in conflict with each other, and are restricted by water depth and face serious development bottlenecks. Therefore, in the future, offshore wind power generation will go deep blue. It is of practical significance to develop the floating foundation supported deep water large-scale wind farm. However, the offshore wind power floating foundation is located in a complex marine environment, the structure of large offshore wind turbine is heavy and the center of gravity is on the high side. And the huge wind tilting torque will be transmitted when running, which leads to the development of offshore wind power floating foundation which can provide stable support for the normal operation of large offshore wind turbines. In this paper, the concept of structure design of offshore Cell Spar is introduced into the research and development of floating foundation of offshore wind power generation, and the concept design of floating foundation of offshore wind power Cell Spar is put forward, and the motion characteristics of floating foundation are studied deeply. This paper provides the theoretical guarantee and technical support for the optimization design and the research of motion characteristics of the floating foundation of Cell Spar in offshore wind power. Firstly, based on the theory of potential flow in three dimensional frequency domain, aiming at the number of sagging plates and the depth of water, The influence of the height of center of gravity on the hydrodynamic performance of CellSpar floating foundation is deeply explored, and the hydrodynamic performance of CellSpar is verified by comparing with the prototype Spar model. It also provides the basis for the study of kinematic characteristics based on viscous flow theory by using the prototype Spar. Secondly, the time-domain kinematic coupling response between the buoy catenary mooring system and the traditional catenary mooring system is studied. The conclusion that the mooring system of buoy catenary is more suitable for the floating foundation of Cell Spar in offshore wind power is obtained. Based on this, the influence of different wind speed, wave height and wave direction on the mooring system is considered. The effect of mooring cable breaking on mooring system under extreme sea conditions is analyzed. A numerical simulation system of wave interaction with Cell Spar floating foundation of offshore wind power is constructed based on viscous flow theory. The flow field, force and motion response of Cell Spar floating foundation under regular wave action are analyzed. Based on the viscous flow theory, a numerical tank technique for the forced oscillatory motion test of a full-scale offshore platform and a floating offshore structure is developed. The characteristics of flow field and force during forced oscillation of floating foundation of offshore wind power Cell Spar and sagging plate are studied, respectively. The results show that the viscous damping of floating foundation of offshore wind power Cell Spar does not increase linearly with the increase of the number of swinging plates, and it is attenuated by the sheltering action of hard and soft tanks of Spar floating foundation, which provides theoretical support for the subsequent optimization of swinging plates. It provides a new idea and method for predicting the hoop performance of floating foundation of offshore wind power.
【學(xué)位授予單位】：華南理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：P751;TM315

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

1 滕斌;鄭苗子;姜?jiǎng)俪?勾瑩;呂林;;Spar平臺(tái)垂蕩板水動(dòng)力系數(shù)計(jì)算與分析[J];海洋工程;2010年03期

相關(guān)博士學(xué)位論文 前1條

1 張德;風(fēng)能資源數(shù)值模擬及其在中國(guó)風(fēng)能資源評(píng)估中的應(yīng)用研究[D];蘭州大學(xué);2009年

本文編號(hào)：1654582