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ABB has commissioned the subsea transmission link connecting the Thornton Bank project to the Belgian grid. The transmission link was constructed as part of an expansion of the Thornton Bank wind farm.
In the first phase of its development, six wind turbines with a total capacity of 30MW were built and temporarily connected to the mainland by ABB. The second and third phases of the project involved adding 48 wind turbines to the wind farm and connecting the complete wind farm, taking its overall capacity to 325MW. The transformer station platform collecting and transmitting the power to the coast of Belgium is placed 30 kilometres offshore in the North Sea. As part of the turnkey project, ABB was responsible for the system engineering, design, supply and commissioning of the alternating current (AC) subsea cables, the land-based cable systems as well as the offshore substation and platform that houses it. The wind turbines are connected via underwater medium-voltage cables to the offshore transformer station where the voltage is boosted to 150 kilovolts (kV) and connected to the mainland grid. The electricity is then fed into the grid at the Slijkens high-voltage substation located at Bredene, about 3 kilometres inland.
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