CG has announced the installation of its transformer substation at the Amrumbank West offshore wind farm. The renewable energy unit consists of eighty 3,6MW (288MW) wind turbines located 100 kilometres off the German coast in the North Sea.
The Amrumbank West offshore wind farm (which was completed along with CG’s consortium partners Fabricom GDF Suez, Iemants and GeoSea) is scheduled to enter service in the autumn of 2015. CG designed, engineered, supplied and integrated all critical high voltage power equipment to connect the 33 kV and 155 kV networks, including power transformers, high and medium voltage switchgear as well as protection and automation equipment. The solution includes an AC/AC connection link for offshore wind farms developed by CG. In the operational phase, the transformer substation will gather electricity generated from the 80 turbines, transform the voltage to 155 kV, and transmit it to the HelWin converter station. From here, the power will be transmitted to the electricity grid operated by Tennet TSO GmbH. The transformer substation will be operated from the wind farm’s service station on Helgoland, and will be monitored and controlled from E.ON’s Offshore Marine Coordination Center in Hamburg. The transformer station is raised on a foundation that is anchored to the seabed, aside from a topside structure, which holds the transformers and electrical switching equipment. The facility also boasts a helipad which is built 42 metres above sea level.