The NOR‑6‑1 (BorWin1) grid connection, linking the BorWin Alpha offshore converter platform to the 380 kV Diele onshore converter/substation via approximately 125 km of submarine cable and 75 km of underground cable, was commissioned in 2010 as a 400 MW, ±150 kV HVDC link operated by TenneT to connect the BARD Offshore 1 wind farm and nearby projects to the German power grid.
BorWin1 grid connection system commissioned and operational.
BorWin Alpha, the offshore HVDC converter platform for the BorWin1 grid connection, was transported from the Vlissingen shipyard in the Netherlands to the German Bight and installed on its jacket structure using the SSCV Thialf at the end of May and beginning of June 2009, forming the offshore terminal of the ±150 kV, 400 MW link to Diele substation.
ABB was contracted to carry out the system engineering and to design, supply and install the offshore BorWin I (Alpha) converter station, the associated sea and land cable systems, and the onshore converter station that form the HVDC grid connection for the BARD Offshore I project in the German North Sea.
Norddeutsche Seekabelwerke (NSW), a subsidiary of General Cable Corporation, supplied the submarine medium- and high-voltage cables for the BARD Offshore I project, which includes the BorWin I (Alpha) offshore HVDC grid connection infrastructure.
Harland and Wolff fabricated the 7,739-tonne BorWin I (Alpha) offshore platform, which houses the converter equipment for the BorWin1 grid connection, under a subcontract from Weserwind as part of the BARD Offshore I project.
As part of the Bard Offshore 1 development, the BorWin1 transmission system was constructed, including the build and installation of the Borwin I (Alpha) offshore converter platform and the installation of two 125 km subsea cables and two 75 km onshore underground cables transmitting power to the 380 kV Diele substation. ABB carried out the system engineering along with the design, supply and installation of the offshore converter station, the sea and land cable systems, and the onshore converter station for this HVDC Light connection operated by TenneT.
As part of the BARD Offshore I development, the BorWin1 grid connection was completed with the construction and installation of the BorWin Alpha offshore converter platform and the installation of two approximately 125 km subsea cables and two approximately 75 km onshore underground cables, forming the HVDC link from the 170 kV BorWin Alpha converter station to the 380 kV Diele substation operated by TenneT.