Introduction to offshore wind energy

Ng, C; Li, Ran

doi:10.1016/b978-0-08-100779-2.00001-5

Cited by 9 publications

(8 citation statements)

References 0 publications

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“…Figure 9 shows the unsuita marine areas for FMEI. Furthermore, sea depth imposes significant spatial constraints for the FMEI siting, it affects the selection of the FMEI support structure and contributes to investment co [34]. The sea depth was used to limit the area of interest and to evaluate the site.…”

Section: Potential Location and Considerations For Energy Islandsmentioning

confidence: 99%

“…As can be seen, the sea depth around Crete can reach more than 10 m. Considering the sea depth around Crete, a floating FMEI is a mandatory choice. In t analysis, the areas with a sea depth limit of 500 m are considered preferable, based on [2 Furthermore, sea depth imposes significant spatial constraints for the FMEI siting, as it affects the selection of the FMEI support structure and contributes to investment costs [34]. The sea depth was used to limit the area of interest and to evaluate the site.…”

Section: Potential Location and Considerations For Energy Islandsmentioning

confidence: 99%

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Conceptual Design of a Floating Modular Energy Island for Energy Independency: A Case Study in Crete

Kurniawati,

Beaumont,

Varghese

et al. 2023

Energies

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This paper aims to investigate the development of a floating artificial sustainable energy island at a conceptual design level that would enhance the energy independence of islands focusing on a case study on the island of Crete. This paper provides a baseline assessment showing the immense potential of wind and solar energy in and around Crete integrating the third significant renewable energy source (RES) of ocean waves into the energy island. The selection of the best location for the floating offshore platforms that compose the energy island is addressed through exploiting the great potential of the above-mentioned RES, taking into consideration criteria with regard to several significant human activities. To this end, the concept of an innovative floating modular energy island (FMEI) that integrates different renewable energy resources is proposed; in addition, a case study that focuses on the energy independency of a big island illustrates the concept referring to the substitution of the local thermal power plants that are currently in operation in Crete with sustainable energy power. Although focused on the renewable energy resources around Crete, the work of this paper provides a basis for a systematic offshore renewable energy assessment as it proposes a new methodology that could be used anywhere around the globe.

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Section: Potential Location and Considerations For Energy Islandsmentioning

confidence: 99%

Section: Potential Location and Considerations For Energy Islandsmentioning

confidence: 99%

Conceptual Design of a Floating Modular Energy Island for Energy Independency: A Case Study in Crete

Kurniawati,

Beaumont,

Varghese

et al. 2023

Energies

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“…Nguyen et al [5] studies the effect of varying the buoyancy section height on the fatigue life of the cable, in a way optimizing the cable configuration for an improved fatigue life. Nguyen et al [7] studies the lazy wave riser in deep waters to categorize safe configurations. This paper deals with optimizing the lazy wave configurations for 200m water depth by varying the design variables including ratio of sectional lengths of the cable, total length of the dynamic cable and number of buoyancy modules.…”

Section: Introductionmentioning

confidence: 99%

Cost optimization of dynamic cable lazy wave configurations for floating offshore wind turbines

Syed,

Muggiasca

2024

J. Phys.: Conf. Ser.

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This research aims to design a low-cost dynamic cable lazy wave configuration at different curvature factors by adopting an integrated approach to optimally size the length of different sections of the dynamic cable accounting for maximum allowable tension, maximum allowable curvature, minimum allowable sag position and maximum allowable hog position. The research explores trade-offs associated with the increase in costs as curvature factor decreases. The configuration is subjected to Near, Far and No offset scenarios to analyse the impact on costs and its performance. The assessment includes determining configuration costs and optimal lengths at different curvature factors for each scenario. Observations reveal that the hang-off point consistently experiences the highest curvature across the arc length in all configurations and scenarios. Optimal configurations for Far scenario outperform configurations designed for No offset scenario when subjected to the remaining two scenarios. Optimal configurations of Near scenario failed to adhere to the maximum allowable curvature limit when subjected to Far and No offset scenarios. The study highlights the sensitivity of the curvature factor to the ratio of lengths of each section in the configuration. These results indicate that a configuration designed for Far offset is more likely to perform well under all scenarios due to its unique section length ratios. The results also portray the possibility of a fit configuration with lower number of buoyancy modules.

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“…In this project, a digital twin of an offshore wind farm is being developed based on the individual models of the different electrical components i.e. generators, power converter, WTSU transformers and MV cable [9], which show the highest failure rates in wind farms [10].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Loss of Life of Dry-Type WTSU Transformers in Offshore Wind Farms

Etxegarai

Valverde

Eguía

et al. 2020

IJRER

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Currently, dry-type transformers are commonly installed as wind turbine step-up (WTSU) transformers, especially in offshore wind farms. Due to their low flammability and resistance to moisture, their performance is optimal in offshore platforms. Nonetheless, their thermal-electrical degradation must be carefully considered given the special wind and weather conditions in marine environments. The present paper studies the thermal aging of dry-type WTSU transformers in offshore wind farms considering the most thermally stressed location i.e. the winding hot-spot. The estimation of the transformer lifetime consumption introduced in this work can be applied in the framework of digital twins for diagnostic and prognostic monitoring purposes The thermal degradation study is based on a typical offshore load profile and includes the analysis of the impact of several transformer characteristics and operating conditions. As a result of the analysis, it can be concluded that lower temperature insulations, forced air cooling systems, a lower mean winding temperature rise and cool ambient temperatures lead to decreased loss of life values. Also, the present work suggests the suitability of considering thermal degradation studies as an optimal sizing factor for offshore WTSU given the low ambient temperatures in marine environment and the low capacity factors.

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Introduction to offshore wind energy

Cited by 9 publications

References 0 publications

Conceptual Design of a Floating Modular Energy Island for Energy Independency: A Case Study in Crete

Conceptual Design of a Floating Modular Energy Island for Energy Independency: A Case Study in Crete

Cost optimization of dynamic cable lazy wave configurations for floating offshore wind turbines

Analysis of Loss of Life of Dry-Type WTSU Transformers in Offshore Wind Farms

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