The German Federal Maritime and Hydrographic Agency (BSH) has given its approval to the marine grid connection system for TenneT ‘s BorWin5 and BorWin epsilon projects in the German North Sea.
This project conforms to the specifications of the 2017 Federal Offshore Plan for the North Sea, which sets the conditions for an orderly and synchronous expansion of offshore wind energy and associated grid connections from 2019.
Connection to the marine network
The approval decision applies to the BorWind epsilon converter platform and the BorWin5 submarine transmission cable, which will connect the 960 MW He Dreiht offshore wind farm to the grid.
The platform will be located in the center of the offshore wind farm, approximately 100 km northwest of Norderney and 10 km east of the current Bard Offshore 1 offshore wind farm. In 2020, TenneT awarded a consortium consisting of Siemens and Dragados Offshore the contract to build the onshore and offshore converter stations for the 900 MW grid connection.
It should be noted that the three-phase current generated by the wind farm will be converted from 66 kV to a direct current of ±320 kV on the BorWin epsilon marine converter platform and will be transported by means of a submarine cable of approximately 120 km in length to the continent, passing through Norderney to Hilgenriedersiel.
TenneT, the transmission system operator (TSO), will begin installation of the submarine cable in June this year and the platform is expected to be operational by mid-2025. The grid connection system is expected to be operational by the end of 2025.
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Source: offshorewind.biz
Image: TenneT
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