本文選題：半潛浮式平臺 + 水動力性能��； 參考：《中國海洋大學》2014年碩士論文

【摘要】：風電經多年發(fā)展已經形成了重要的社會、經濟效益，然而陸地資源是有限的，風電由陸上向海上發(fā)展是一個必然的趨勢。我國海上風電的研究起步較晚，目前研究和應用集中于近海的固定式海上風電，對于科技含量最高的浮式風電的研究比較少。本文針對我國南海海域海況條件設計了一種裝機容量達到3×（3~3.6）MW的新型半潛浮式風電基礎，在傳統(tǒng)的半潛浮式基礎底部增加了三個浮筒的設計用以增大排水體積和加強整體結構強度。浮式基礎的水動力性能、環(huán)境運動響應、錨泊系統(tǒng)設計、裝機容量及完整穩(wěn)性和破艙穩(wěn)性是本文的重要研究內容，具體開展了以下工作： 1.參考挪威最新研究的新型海上浮式風電基礎結構Windsea，基于國內某型號風機算出的上部氣動荷載及風機塔筒質量等基本要素，詳細設計了三浮筒半潛式浮式基礎結構的主要的浮筒、立柱排水尺寸和整體結構形式，通過GeniE建立完成浮式風電模型，并導出多種類型的有限元模型用于頻域、時域分析。 2.文中利用HydroD分析浮式基礎的水動力性能，通過對整體結構形式、尺寸的調整以及壓水板的設計，能夠使本文所設計的新型半潛浮式平臺水動力性能明顯優(yōu)于傳統(tǒng)半潛浮式風電平臺，浮式基礎的縱搖、橫搖及垂蕩周期要遠離南海波浪能量集中區(qū)，具有良好的耐波性，適宜在南海海域工作。 3.通過DeepC模塊完成浮式風電系統(tǒng)在設計的系泊系統(tǒng)約束下的時域分析，，要求在短時預報周期內浮式風電系統(tǒng)六自由度位移、偏轉響應符合國內外規(guī)范要求，設計的系泊系統(tǒng)鋼纜強度滿足海上風機安全運營要求。針對文中設計的浮式基礎進行極限裝機容量研究，分析出其最大承載能力。 4.穩(wěn)性是平臺性能指標的重要衡量標準，直接關系到造價昂貴的海上風機運行安全和對風資源的利用效率，文中針對浮式平臺在各種海況下的整體穩(wěn)性及破艙穩(wěn)性展開研究，要求保證風機在工作海況下平穩(wěn)運行，在極端海況、破艙條件下能夠生存。 本文所設計的三風機一體的新型半潛浮式結構平臺，相對于國內半潛浮式風電平臺的研究是一種創(chuàng)新，研究結果表明，文中設計平臺水動力性能優(yōu)越，耐波性能良好，3×3MW風電系統(tǒng)能夠在有義波高不大于4.5m時安全發(fā)電，平臺最大裝機容量可達3×3.6MW，在50年一遇海況及任意兩壓載艙破損的情況依然能夠保證風電系統(tǒng)的生存。這對我國近海乃至深海風電開發(fā)具有重要的參考價值。
[Abstract]:Wind power has formed important social and economic benefits after years of development. However, land resources are limited, and wind power development from land to sea is an inevitable trend. The research on offshore wind power in China is late. At present, the research and application of offshore wind power is concentrated in the offshore fixed type wind power, and the research on floating wind power with the highest scientific and technological content is less. In this paper, a new type of semi-submersible floating wind power foundation is designed for the sea conditions in the South China Sea of China. The installed capacity of the wind power is up to 3 脳 10 ~ 3 ~ 3.6MW. Three buoys are added to the base of the traditional semi-submersible floating foundation to increase the drainage volume and strengthen the overall structural strength. The hydrodynamic performance of floating foundation, the response of environmental motion, the design of mooring system, the installed capacity and the intact stability and the stability of damaged cabin are the important contents of this paper. The following work has been carried out in detail: 1. Referring to the new offshore floating wind power infrastructure, Windsea, which is recently studied in Norway, based on the basic elements of the upper aerodynamic load calculated by a certain type of domestic fan and the mass of the fan tower, the main buoys of the three-buoy semi-submersible floating foundation structure are designed in detail. The floating wind power model is built by GeniE and the finite element model is derived for frequency domain and time domain analysis. 2. In this paper, HydroD is used to analyze the hydrodynamic performance of floating foundation. The hydrodynamic performance of the new type of semi-submersible floating platform designed in this paper is obviously superior to that of the traditional semi-submersible floating wind power platform. The period of pitching, rolling and swaying of floating foundation is far from the South China Sea wave energy concentration zone and has good wave resistance. Suitable for working in the South China Sea. 3. The time domain analysis of floating wind power system under the constraint of mooring system is completed by DeepC module. It is required to predict the displacement of floating wind power system with six degrees of freedom in a short period of time, and the deflection response conforms to the requirements of domestic and foreign codes. The design of mooring system cable strength meets the safety operation requirements of offshore fan. The maximum load-carrying capacity of the floating foundation is analyzed by studying the limit installed capacity of the floating foundation designed in this paper. 4. Stability is an important measure of platform performance, which is directly related to the operation safety of expensive offshore fan and the utilization efficiency of wind resources. In this paper, the overall stability and damage stability of floating platform under various sea conditions are studied. It is required to ensure that the fan runs smoothly under the working sea conditions and can survive under extreme sea conditions and damaged conditions. Compared with the domestic semi-submersible floating wind power platform, the new semi-submersible floating structure platform designed in this paper is an innovation. The research results show that the hydrodynamic performance of the designed platform is superior to that of domestic semi-submersible floating wind power platform. The 3 脳 3MW wind power system can safely generate electricity when the mean wave height is less than 4.5 m, and the maximum installed capacity of the platform can reach 3 脳 3.6 MW. It can still guarantee the survival of the wind power system once in 50 years when the sea conditions and any two ballast tanks are damaged. This has important reference value for offshore and even deep sea wind power development in China.
【學位授予單位】：中國海洋大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TU476

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