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IHCantabria perform scour protection experiments

By: Matthew White 23/03/2018 IHCantabria

General Windfarms

IHCantabria is carrying out physical experiments of the scour protection for East Anglia ONE wind farm off east of the east coast of the UK.

The Environmental Hydraulics Institute of the Cantabria (IHCantabria), in collaboration with Iberdrola Renovables and ScottishPower, is carrying out reduced scale physical experiments campaign in order to evaluate the performance of different scour protection solutions use in the East Anglia ONE project.

In these physical tests the metocean characteristics of the studied location are simulated and the real Jackets’ orientation and the seabed characteristics are reproduced. The scale selected is 1:30.

The physical experiments are being carried out in the tridimensional wave basin CCOB (Cantabria Coastal and Ocean Basin) of IHCantabria. The CCOB is equipped with a multi-directional wave generator, a portable wind generator and a current generator. IHCantabria state these capabilities, together with CCOB’s dimensions of 30mx44m, make this facility ideal for these tests.

Two Jackets foundations with different scour protection systems are being simultaneously tested in the CCOB. The scour protection of the firsts Jacket foundation is a frond mats system, while the scour protection system of the second jacket is a conventional one made of rocks. The scope of the experiments is to try make comparisons of the performance of the two scour protection systems analysed, as well as collecting information for the definition of monitoring and maintenance requirements.

During the physical experiments, the interaction among the jacket foundation, the scour protection and the moving bed will be evaluated under several combinations of wave and current conditions. It also states that, due to the presence of sand waves in East Anglia, the physical experiments are being carried out reproducing the presence of sand waves.

The evaluation of the scour protection response, as well as the sand waves’ evolution, will be analysed through the execution of individual tests, such as; waves, currents, tidal cycle and combined wave and currents tests.
The East Anglia ONE installation in the south east coast of England, to be put into operation by Iberdrola in 2020, will supply electricity to half a million households. The £2.5bn wind farm is the first of four projects in the East Anglia region to begin construction. It is being realised solely by ScottishPower Renewables and is located approximately 45km east of Lowestoft, UK. The 714MW array will feature 102 SWT-7.0-154 direct-drive wind turbines, each with a capacity of 7MW.

For more information, please follow the links provided. Alternatively, click here to 4C Offshore's interactive map of offshore wind farms.

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IHCantabria perform scour protection experiments

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