HVDC DolWin2 is a high voltage direct current (HVDC) link to transmit offshore wind power to the power grid of the German mainland. The project differs from most HVDC systems in that one of the two converter stations is built on a platform in the sea. Voltage-Sourced Converters with DC ratings of 900 MW, ±320 kV are used and the total cable length is 135 km. The project is similar to the HVDC DolWin1 project but has a slightly higher power rating and uses a different design of offshore platform. The platform was designed by Norwegian company AibelWind success for Aibel Aibel 4 August 2011 and built by Drydocks World in DubaiDrydocks World reinforces its leadership in offshore construction with the completion of the pioneering mega structure – DolWin beta Drydocks World 10 June 2014 and transported to Europe in the summer of 2014Smit Lamnalco Aid in DolWin Beta Transport Offshore Wind.biz 22 July 2014 to be fitted out at the Aibel yard in Haugesund in Norway.DolWin Beta to Arrive in Haugesund Tonight, Offshore Wind.biz, 21 August 2014.DolWin Beta Becomes Resident of North Sea (Gallery), Offshore Wind.biz, 2 September 2014.Photo of the Day: Work Underway on DolWin Beta, Offshore Wind.biz, 17 November 2014. The platform, which is of a floating, self-installing design not previously used in an HVDC project, sailed out from Haugesund on 1 August 2015Dolwin beta on the move ABB 1 August 2015 and was installed in the North Sea ten days later.ABB installs world's most powerful offshore converter platform in the North Sea ABB 10 August 2015

The overall project was built by ABB and was handed over to its owner, TenneT, in 2017.

Connected wind farms Gode Wind I (330 MW) Gode Wind II (252 MW) Nordsee One (332 MW)

See also

High-voltage direct current Offshore wind power HVDC BorWin1 HVDC BorWin2 HVDC BorWin3 HVDC DolWin1 HVDC DolWin3 HVDC HelWin1 HVDC HelWin2 HVDC SylWin1

References

External links Description of project on TenneT website (in German). Dolwin2, ABB website. ABB installs Dolwin beta - world's most powerful offshore converter platform in the North Sea, YouTube video.