Deal for Offshore Wind Connection

Tuesday, July 20, 2010 @ 03:07 PM gHale

In a move to heighten its reliability and stability, German transmission grid operator, transpower, inked a $700 million deal with ABB to supply an 800-megawatt (MW) power link that will connect more offshore wind farms in the DolWin1cluster, located in the North Sea to the mainland German grid.
ABB’s HVDC Light (high-voltage direct current) transmission technology will transmit power from the 400 MW Borkum West II wind farm and other wind farms. The wind farms will connect to an offshore HVDC converter station which will transmit electricity to the onshore HVDC station at Dörpen, on the northwest coast of Germany via 165 km of underwater and underground DC cables. The Dörpen/West converter station will in turn feed AC power to the mainland grid.
This 320-kilovolt project will be the highest voltage level of extruded cable ever used for HVDC.
ABB will supply system engineering, including design and installation of the offshore platform, the offshore and onshore converter stations, and will also supply and install the sea and land cable systems.
“Offshore wind power is becoming a key source of large-scale renewable energy and is making a vital contribution to the effort of lowering environmental impact,” said Peter Leupp, head of ABB’s Power Systems division. ABB’s goal is to
HVDC Light transmission systems offer neutral electromagnetic fields, oil-free cables and compact converter stations which can work well in connecting remote offshore wind farms to mainland networks, overcoming distance limitations and grid constraints.
Scheduled to come on line in 2013, this network of offshore wind farms will eliminate three million tons of carbon dioxide emissions per year by replacing fossil-fuel based generation. Germany gets 8% of its electricity requirements from wind power and expects to double that by 2020.

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