IHCantabria is carrying out physical experiments of the scour protection for East Anglia ONE Iberdrola wind farm
Friday, 23 March 2018 12:49

IHCantabria is carrying out physical experiments of the scour protection for East Anglia ONE Iberdrola wind farm

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The Environmental Hydraulics Institute of the Cantabria (IHCantabria), in collaboration with Iberdrola Renovables and ScottishPower, is carrying out a reduced scale physical experiments campaign in order to evaluate the performance of different scour protection solutions to prevent the scour around the Jacket Legs at the new Iberdrola offshore wind farm of East Anglia ONE.

 

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 The Environmental Hydraulics Institute of the University of Cantabria. The CCOB is equipped with a multi-directional wave generator, a portable wind generator and a current generator, allowing the study of any typology of floating or fixed offshore foundation. These capabilities, together with CCOB’s dimensions (30 m x44 m) make this facility ideal for these tests.

In order to maximize the efficiency of the physical experiments, and thanks to the basin dimensions and the scale selected, 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 (http://www.sscsystems.com), while the scour protection system of the second jacket is a conventional one made of rocks. Hence, these tests will allow the comparison of the performance of the two scour protection systems analyzed, 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 currents conditions. Furthermore, 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 analyzed through the execution of individual tests (waves, currents, tidal cycle and combined wave and currents tests, 3 hours duration at full scale, corresponding to return periods of 10-50 years), and cumulative tests, executing 6 sea states in a row (combined wave and currents tests, 3 hours duration at full scale, corresponding to return periods of 1-5-10-15-20-50 years).

The physical experiments are performed in the framework of SPJ (Scour Protection Jacket) project, founded by SODERCAN through the call I+C=+C 2016 and developed by the consortium composed of Ingecid, Iberdrola Renovables and IHCantabria. 

East Anglia Int ESP

 

East Anglia ONE

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.

It will cover a total area equivalent to 30,000 football pitches, and will include 102 turbines and a substation the size of the Vicente Calderón stadium (Madrid, Spain). The huge offshore East Anglia ONE wind farm, which Iberdrola is building in the North Sea, will be the largest in the world and will supply around 500,000 British households, the equivalent of a large city like Málaga (Spain).

 

 

 

 

 


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