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Successful cable pull in: Baltic Eagle progresses towards grid connection

4C Offshore | Chloe Emanuel
By: Chloe Emanuel 31/05/2023 50hertz

The grid connection of the
Baltic Eagle offshore wind farm to the German high voltage grid is on the home straight. 50Hertz successfully pulled two 220 kV submarine cable systems into the Baltic Eagle platform, which had previously been placed on the seabed in a safety area next to the destination of the substation.

In February of this year, the transformer platform was already installed at the intended destination north east of the island of Rügen in the Baltic Eagle wind farm. The assembly work for the connection to the 50Hertz transmission grid is currently taking place. Extensive system tests are then carried out.

The cable feed (pull-in) is technically very demanding. Up to 72 people were employed offshore on site to prepare and carry out the work for the pull-in - it took around 2.5 days to pull in the cable for each submarine cable segment. At a water depth of about 40 metres, the submarine cable is pulled into the substation platform with a cable winch and another protective tube in the J-tube (cable entry).

After the positive results of the tests, 50Hertz is ready to connect the Baltic Eagle wind farm, which is currently under construction, to the grid. The electricity generated there will then be fed into the German high-voltage grid in the Lubmin substation.

Ostwind 2 is the project to connect the Baltic Sea wind farms
Arcadis Ost 1 and Baltic Eagle to the German high voltage grid. 50Hertz is building three submarine cable systems for dissipating the power from the two wind farms, which will transmit a total of 750 MW. Arcadis Ost 1, the wind farm of the Belgian company Parkwind, is located in the western Arkonasee cluster. Baltic Eagle, the project of the Spanish energy group Iberdrola, is located in the Arkonasee cluster. It is around 20 kilometres (Arcadis Ost 1) or 30 kilometres (Baltic Eagle) to the nearest coast of Rügen, and around 90 kilometres to Lubmin and the transformer station on the Greifswalder Bodden.

For more information on offshore wind farms worldwide, click here.


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