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Study on Lectotype of Tidal Current Power Platform and Mooring System Design

Author: GuChunJiang
Tutor: ZhangLiang
School: Harbin Engineering University
Course: Fluid Mechanics
Keywords: Trend of the power station Fuzzy optimization Platform Selection Three-dimensional potential flow theory Mooring system
CLC: P743
Type: Master's thesis
Year: 2009
Downloads: 95
Quote: 7
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Abstract


Ocean currents is a high value and great potential of the new energy. Tidal current energy generation not only economic, not accounting for the land, and do not pollute the environment. It has the characteristics of clean and renewable, occupy a very important position in the new energy development and utilization. Trend of the power plant demonstration runs at home and abroad have been built, the basic structure in the form of floating piles for support and undersea style. The domestic test run trend of the power station is basically a floating structure, the basic form is special carrier is selected as a work platform equipped with a turbine and generator sets. Due to the trend of the power plant needs to survive in the work sea conditions and adverse sea conditions, must be calculated and analyzed its sports performance under various external loads, the rational design of mooring system, the possibility of overturning avoid floating power station. This paper being studied by the National Science and Technology Support Project trend power station the subproject 150kW trends of key technology research and demonstration power plant design as a reference object, design a platform equipped with straight blade turbine, moored to the Zhoushan sea area, the installed capacity of 300kW the trend of power plants. The work carried out by the article is an exploration of the design of offshore floating trend of the power station, in order to come to the conclusion of the the subproject design work to provide a reference and comparison value. The paper presents a program of several platforms, from factors such as cost, stability, floating state, and the drag force compared by the precedence relation-based fuzzy optimal selection to select the optimal platform for the comprehensive evaluation index. Then, based on three-dimensional frequency domain potential flow theory, wind, wave and current role, the application WAMIT regular wave power station coupled motion analysis. Four anchor chain symmetrical arrangement is proposed according to the characteristics of power station platform, according to the different composition ratio of the mooring line, designed four mooring line program using time-domain coupled analysis the HARP software on the entire mooring system, and different options contrast. On this basis, the optimal solution is given in the response and platforms of different sea conditions and operating conditions of the mooring line six-degree-of-freedom motion response. Finally, based on the the work waters seabed conditions and mooring performance requirements, selecting appropriate grip anchors. The thesis results showed that the platform preferably has a practical, anchoring the design is feasible.

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CLC: > Astronomy,Earth Sciences > Oceanography > Marine resources and development > Marine power resources development
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