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Deriving robust design parameters and design criteria for the first offshore artificial island for electricity conversion in the northern North Sea
Haerens, P.; Vandenbroucke, T.; Mercelis, P.; De Wit, K.; Sas, M.; Steensels, M. (2014). Deriving robust design parameters and design criteria for the first offshore artificial island for electricity conversion in the northern North Sea, in: ASME (Ed.) Proceedings of the ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering. Volume 7: Ocean Space Utilization; Professor Emeritus J. Randolph Paulling Honoring Symposium on Ocean Technology. pp. 9. https://dx.doi.org/10.1115/OMAE2014-24012
In: ASME (Ed.) (2014). Proceedings of the ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering. Volume 7: Ocean Space Utilization; Professor Emeritus J. Randolph Paulling Honoring Symposium on Ocean Technology. American Society of Mechanical Engineers (ASME): New York. ISBN 978-0-7918-4549-3. , meer
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Documenttype: Congresbijdrage
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Auteurs  Top 
  • Haerens, P., meer
  • Vandenbroucke, T.
  • Mercelis, P.
  • De Wit, K., meer
  • Sas, M., meer
  • Steensels, M.
Abstract
    In support of future wind farm developments and to anticipate the intentions to create a European wide smart electricity grid, an offshore high voltage grid in the Belgian North Sea is under development to connect several wind farms to the Belgian onshore electricity grid, called Belgian Offshore Grid (BOG). This grid will contain the first artificial island (AI) to support electricity conversion and transport in the North Sea. The AT will be part of an offshore high voltage grid that shall connect a number of offshore wind farms to an onshore high voltage station. An accurate definition of site conditions and design criteria is of utmost importance for the design, operability and exploitation of the island and is the main driver for the cost of such islands. Deriving robust, but not over conservative site conditions and appropriate design criteria was one of the first challenges for the project. Based on in-situ measurements of geotechnical, geophysical and met-ocean conditions design parameters have been derived together with design criteria. This paper focuses on the methods and numerical models used to define the appropriate design input and the sensitivity analysis of the design criteria. In order to derive robust but not over conservative design parameters not only in-situ measurements are required, but also a combination of statistical analysis, numerical models and sensitivity analysis of design criteria and functional requirements. One of the driving design criteria for such works is the allowable overtopping discharge and related hydrodynamic forces on the infrastructure on the island, which largely influences the cost.
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