BorWin1

The German utility transpower stromübertragungs gmbh, formerly known as E.ON Netz GmbH, has awarded a contract to ABB to supply the power equipment that will integrate the world’s largest offshore wind farm into the German grid.
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The Borkum 2 wind farm will be developed by BARD Engineering GmbH. It will consist of 80 wind generators of 5 MW located about 130 km from the coast in the North Sea. The generators will feed power into a 36 kV AC cable system which will transformed to 154 kV for the HVDC Light^® offshore station. The receiving station will be located at Diele 75 km from the coast where the power will be injected into the German 380 kV grid.

ABB is responsible for system engineering including design, supply and installation of the offshore converter, sea and land cable systems and the onshore converter.

The cables will be laid underwater and underground, thus minimizing environmental impact.

		On June 6th, 2009, the top side, which contains the converter station, was lifted up on the jacket (the legs).The top side weighs 3,300 metric tonnes. Click for larger image.
		The platform BorWin Alpha installed in the North Sea. Read the customer's log book from the platform installation - see link to the right on this page. Click for larger image.

Main data
Commissioning year:	2009
Power rating:	400 MW
No of circuits:	1
AC Voltage:	170 kV (Platform BorWin Alpha), 380 kV (Diele)
DC Voltage:	±150 kV
Length of DC underground cable:	2 x 75 km
Length of DC submarine cable:	2 x 125 km
Main reason for choosing HVDC Light:	Length of land and sea cables.