DNV GL to aid BorWin installation

OE Staff
Wednesday, May 18, 2016

Norway's DNV GL has been awarded a contract by China's COSCO Shipping Company for the installation engineering services for the BorWin gamma high voltage direct current (HVDC) converter platform.

The Dutch-German transmission system operator TenneT is developing the offshore AC/DC converter platform BorWin gamma as part of the grid connection project BorWin3.   

A consortium of Siemens and Petrofac has been contracted by TenneT to design, build and install BorWin gamma.  COSCO SHIPPING was awarded the transportation and installation contract by Petrofac and has chosen DNV GL's Noble Denton marine services as partner to fulfill the dynamic positioning (DP) float-over job. 

DNV GL’s Noble Denton marine services pioneered and developed DP float-over, a heavy module installation method using a dynamic positioning vessel, together with COSCO.

"DNV GL has jointly completed 10 installations successfully around the world with COSCO,” explains Andy Wang, project director of DNV GL - Oil & Gas Greater China.  “Our experts have a solid track record in DP float-over that won the confidence of Petrofac and Siemens," he continues.

This project will create a few new entries to DNV GL's record book.  Weighing in at a massive 18,000-tonne, BorWin gamma will be one of the heaviest HVDC platform ever installed; moreover, it will be the first DP float-over operation in the North Sea and Europe.

The installation is expected to start in the summer of 2018.  Once completed, it will transmit approximately 900 MW of wind power, which is roughly equal to the annual electricity consumption of 1 million German households.

Scheduled to go online in 2019, the BorWin gamma platform will be installed nearly 130km off the German coast in the North Sea, at a water depth of approximately 40m.  The 900 MW DC transmission will be through 320 kV cable of 160 km length.

Categories: Offshore Wind Germany Renewables Installation

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