Wind Turbines Offshore Foundations and Connections to Grid

Most offshore wind farms built thus far are based on waters below 30 m deep, either using big diameter steel monopiles or a gravity base. Now, offshore windfarms are starting to be installed in deeper waters and the use of these structures—used for oil and gas like jackets and tripods—is becoming mo...

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Main Authors: Manzano Agugliaro, Francisco, Sánchez Calero, Miguel, Alcayde García, Alfredo, San Antonio Gómez, Carlos, Perea Moreno, Alberto Jesús, Salmerón Manzano, Esther María
Format: info:eu-repo/semantics/article
Language:English
Published: MDPI 2020
Subjects:
Online Access:http://hdl.handle.net/10835/7712
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author Manzano Agugliaro, Francisco
Sánchez Calero, Miguel
Alcayde García, Alfredo
San Antonio Gómez, Carlos
Perea Moreno, Alberto Jesús
Salmerón Manzano, Esther María
author_facet Manzano Agugliaro, Francisco
Sánchez Calero, Miguel
Alcayde García, Alfredo
San Antonio Gómez, Carlos
Perea Moreno, Alberto Jesús
Salmerón Manzano, Esther María
author_sort Manzano Agugliaro, Francisco
collection DSpace
description Most offshore wind farms built thus far are based on waters below 30 m deep, either using big diameter steel monopiles or a gravity base. Now, offshore windfarms are starting to be installed in deeper waters and the use of these structures—used for oil and gas like jackets and tripods—is becoming more competitive. Setting aside these calls for direct or fixed foundations, and thinking of water depths beyond 50 m, there is a completely new line of investigation focused on the usage of floating structures; TLP (tension leg platform), Spar (large deep craft cylindrical floating caisson), and semisubmersible are the most studied. We analyze these in detail at the end of this document. Nevertheless, it is foreseen that we must still wait sometime before these solutions, based on floating structures, can become truth from a commercial point of view, due to the higher cost, rather than direct or fixed foundations. In addition, it is more likely that some technical modifications in the wind turbines will have to be implemented to improve their function. Regarding wind farm connections to grid, it can be found from traditional designs such as radial, star or ring. On the other hand, for wind generator modeling, classifications can be established, modeling the wind turbine and modeling the wind farm. Finally, for the wind generator control, the main strategies are: passive stall, active stall, and pitch control; and when it is based on wind generation zone: fixed speed and variable speed. Lastly, the trend is to use strategies based on synchronous machines, as the permanent magnet synchronous generator (PMSG) and the wound rotor synchronous generator (WRSG).
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spelling oai:repositorio.ual.es:10835-77122023-10-31T09:13:23Z Wind Turbines Offshore Foundations and Connections to Grid Manzano Agugliaro, Francisco Sánchez Calero, Miguel Alcayde García, Alfredo San Antonio Gómez, Carlos Perea Moreno, Alberto Jesús Salmerón Manzano, Esther María offshore foundations connection to grid modeling control Most offshore wind farms built thus far are based on waters below 30 m deep, either using big diameter steel monopiles or a gravity base. Now, offshore windfarms are starting to be installed in deeper waters and the use of these structures—used for oil and gas like jackets and tripods—is becoming more competitive. Setting aside these calls for direct or fixed foundations, and thinking of water depths beyond 50 m, there is a completely new line of investigation focused on the usage of floating structures; TLP (tension leg platform), Spar (large deep craft cylindrical floating caisson), and semisubmersible are the most studied. We analyze these in detail at the end of this document. Nevertheless, it is foreseen that we must still wait sometime before these solutions, based on floating structures, can become truth from a commercial point of view, due to the higher cost, rather than direct or fixed foundations. In addition, it is more likely that some technical modifications in the wind turbines will have to be implemented to improve their function. Regarding wind farm connections to grid, it can be found from traditional designs such as radial, star or ring. On the other hand, for wind generator modeling, classifications can be established, modeling the wind turbine and modeling the wind farm. Finally, for the wind generator control, the main strategies are: passive stall, active stall, and pitch control; and when it is based on wind generation zone: fixed speed and variable speed. Lastly, the trend is to use strategies based on synchronous machines, as the permanent magnet synchronous generator (PMSG) and the wound rotor synchronous generator (WRSG). 2020-02-19T13:09:53Z 2020-02-19T13:09:53Z 2020-01-28 info:eu-repo/semantics/article 2411-5134 http://hdl.handle.net/10835/7712 en https://www.mdpi.com/2411-5134/5/1/8 Attribution-NonCommercial-NoDerivatives 4.0 Internacional http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess MDPI
spellingShingle offshore foundations
connection to grid
modeling
control
Manzano Agugliaro, Francisco
Sánchez Calero, Miguel
Alcayde García, Alfredo
San Antonio Gómez, Carlos
Perea Moreno, Alberto Jesús
Salmerón Manzano, Esther María
Wind Turbines Offshore Foundations and Connections to Grid
title Wind Turbines Offshore Foundations and Connections to Grid
title_full Wind Turbines Offshore Foundations and Connections to Grid
title_fullStr Wind Turbines Offshore Foundations and Connections to Grid
title_full_unstemmed Wind Turbines Offshore Foundations and Connections to Grid
title_short Wind Turbines Offshore Foundations and Connections to Grid
title_sort wind turbines offshore foundations and connections to grid
topic offshore foundations
connection to grid
modeling
control
url http://hdl.handle.net/10835/7712
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