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Ostwind 2 cables pulled-in

By: Tom Russell 29/06/2021 50Hertz

Cables General Windfarms

German transmission system operator 50Hertz announced that the cable pull-in has been completed for onshore cables for the Ostwind 2 grid connection project. The onshore cables have now been installed underground over a distance of three kilometres from the landing point, where the offshore cables meet the mainland, to the Lubmin transformer station.

Using horizontal directional drilling the necessary protective ducts had already been installed in the course of the Ostwind 1 project. The HDD drilling technique was used so as not to interfere with the above-ground nature reserve. Now the high-voltage cables could be pulled into the existing underground protective ducts.

Before the electricity generated on the Baltic Sea can be brought onshore by sea cable and supplied to the 50Hertz transmission grid, foundations for the primary electrical equipment have to be built in the substation. Until the foundations are completed and the shunt reactors, High voltage transformers and switchgear are installed, the ends of the cables lie secured within the site. After that, the cables are pulled to their intended end positions and connected to the transformer station. In addition, joints connecting the sections of the land cable will be installed on certain sections over the next few months.

When the primary electrical equipment is installed, the cables are terminated into the substation and the intermediate joints have been completed, the sea cables can be connected to the land cable at the landing point on the Greifswalder Bodden.

Ostwind 2 is a grid connection project which will connect two future offshore wind farms in the Baltic Sea, Arcadis Ost 1 and Baltic Eagle, to the German high voltage grid. Together, the two wind farms are to generate an output of approximately 725 MW. The project includes the installation of three submarine cable systems to deliver this power. They will connect to the German transmission network at the substation Lubmin (Mecklenburg-Vorpommern).

For more information on offshore wind farms or subsea cable systems worldwide, click here.

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Ostwind 2 cables pulled-in

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