Danish Energinet and German 50Hertz establish the world’s first offshore interconnection by using the national grid connections to offshore wind-farms in the Baltic Sea.
Milestone reached by linking the Danish and the German transmission grids
Today, both offshore cables of the Combined Grid Solution – Kriegers Flak, the first interconnector linking the Danish and the German transmission grids in combination with the infrastructure of offshore wind farm grid connection, have been installed.
Today, in the middle of the Baltic Sea, the crane vessel Rambiz 3000 completed the installation of three offshore platforms of 800, 1500 and 1800 tonnes respectively. The platforms will be used to collect the generated power from the future offshore wind farm on Kriegers Flak and to exchange power between Denmark and Germany.
Transformer lifted and placed into the platform
On April 3rd, the heart of the offshore platform Kriegers Flak Extension, the 450-MVA-Transformer, has been lifted and placed into the platform. The platform is built at the dockyard Hollandia in Krimpen/IJssel in the Netherlands. Here, the transformer will get its final oil filling and will be connected to the radiators. End of April the platform will leave the dockyard and will be shipped to the Kriegers Flak offshore wind farm. There, the platform will be placed onto the foundation.
Two transformer platforms are needed to collect the electricity from the future offshore wind farm at Kriegers Flak, which will supply 600,000 households with green electricity. The massive concrete and steel foundations have now been successfully installed.
The foundations for the Kriegers Flak platforms have been shipped from Ostend in Belgium to Denmark. They are now in Køge habour, waiting for the crane ship required for the installation of the foundations offshore.
See a timelapse of how the enormous foundations were constructed at a barge in Ostend
A barge carrying two gravity based foundations (GBFs) for the offshore substations of the Danish 605MW Kriegers Flak offshore wind farm has left the port of Ostende, Belgium. One platform will be used for the Interconnector Combined Grid Solution.
In Oostende in Belgium the two foundations for the platforms at Kriegers Flak offshore wind farm have been assembled and are ready for shipping.
Energy & infrastructure of wind farms as part of an interconnector Germany and Denmark:
Video: How CombinedGridSolution will work
Energinet.dk and 50Hertz have awarded nkt cables the contract for the production and delivery of the submarine cables as part of the Kriegers Flak Combined Grid Solution.
50Hertz and Energinet.dk establish a 400 MW offshore interconnection
using offshore wind-park connections
By awarding the contract for a HVDC (high-voltage direct current) converter station in Bentwisch, Northern Germany, the transmission system operators 50Hertz and Energinet.dk make an important step towards establishing an interconnection between the national grids of Germany and Denmark. The “Kriegers Flak Combined Grid Solution” will be the world’s first offshore interconnection that is using the national grid connections to offshore wind-farms.