The owners of the two offshore wind farms, Ørsted and Vattenfall, invested in the 33 kV cable that creates additional security for the two energy companies' billion-kroner investments in the North Sea. If there is a problem with the export connection to land, this is not only critical for the supply of electricity to customers on the mainland; it is also critical for the wind turbines.
"Offshore wind turbines must always be supplied with electricity; otherwise there is a risk of significant damage from for instance humidity. The cable also enables a quick and easy start-up of the offshore wind farm once the export connection is back in service. In addition, we save a lot of diesel fuel and operating hours for the emergency generators for both the wind turbines and the service boats", points out Niels Møller Jensen, Interface Manager at Horns Rev 3.
The cable, which was completed in April, is an optimal solution both in terms of the environment and with regard to investments and operating costs. It was used for the first time recently when Energinet had to disconnect the export cable from Horns Rev 2 for four days for maintenance works. During this time, the wind farm was supplied with electricity from Horns Rev 3.
