GALINA POZZA, Higor (2024) Optimization of tensioned anchor connections for floating wind turbines for NextFloat and Paref projects PFE - Project Graduation, ENSTA.
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Abstract
The increase in demand for renewable energy has driven scientific and technological development globally, evolving in tandem with public policies that seek to mitigate the effects of global warming. In this context, wind energy has great potential for generating energy with low carbon dioxide emissions. Offshore wind turbines are a solution that relies on the regularity and scalability allowed by the marine environment, both because of more consistent and abundant winds and because of the vast space available. In order to exploit regions further from the coast, the development of floating systems is the natural path taken by the industry. Technip Energies is one of the main players in the field of engineering, management and execution of projects in the naval sector, especially in the exploration, storage and transportation of natural resources. The decades of experience of Technip Energies engineers, combined with the innovation and dynamism of partner start-ups, are being put into practice in the development of the NextFloat project, which aims to deploy an innovative floater. The anchoring of this floater to the seabed is based on the use of a Tension Leg Platform (TLP) system, from anchoring piles fixed to the sea bed and mooring lines that connect these piles to a buoy, which is connected to the floater that holds the turbine. The interfaces between the mooring line and the anchor pile and the TLP buoy are made by connectors developed in-house. The aim of this work is to investigate a potential variation of the lower connector. This investigation started with a literature review of the main public policies and the French renewable energy market, as well as a brief summary of the two main technical standards used. Two new connector designs were then proposed and tested in terms of mechanical strength (finite element analysis), fatigue life (accumulated damage fatigue method) and installability using the usual industry methods. A comparative economic study was carried out to verify the impact of this new solution on the cost of the connectors and the overall cost of the project.
Item Type: | Thesis (PFE - Project Graduation) |
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Uncontrolled Keywords: | Offshore wind; FOWTs; Tensioned mooring connections; Mooring systems; Finite Element Meth- ods; Connector optimization; TLP |
Subjects: | Earth Sciences and Environmental Engineering Materials Science, Mechanics and Mechanical Engineering |
ID Code: | 10370 |
Deposited By: | Higor POZZA |
Deposited On: | 09 oct. 2024 19:19 |
Dernière modification: | 09 oct. 2024 19:19 |
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