ABB to upgrade transmission control for vital Scandinavian power interconnector

Control system will enhance grid reliability and extend link’s life span

Zurich, Switzerland, February 21, 2006 - ABB, the leading power and automation technology group, has been selected by, Denmark, and Statnett, Norway, to upgrade the control system of the 30-year-old Skagerrak 1&2 high voltage direct current (HVDC) link with a new ABB system called MACH 2.

"ABB's cutting-edge HVDC control technology, MACH 2, will enhance grid reliability," said Samir Brikho, head of ABB's Power Systems division. "Upgrading the controls of the HVDC transmission link will extend its life by another 30 years."

The ABB Skagerrak 1&2 HVDC cable project is a milestone in HVDC history, having been the first cable or overhead transmission line to be built entirely with thyristor valve technology. After 30 years of successful operation, ABB has received an order to upgrade the control system.

The MACH 2 system is the world's most used control system for HVDC and FACTS with over 400 systems in operation. It is used in all types of HVDC installations from small, but very demanding HVDC Light installations to large 3,000 megawatts power links.

ABB has the widest experience of control system upgrades in the HVDC industry. Recent upgrade projects include the Square Butte HVDC links and the CU HVDC Links in the U.S.

ABB ( is a leader in power and automation technologies that enable utility and industry customers to improve their performance while lowering environmental impact. The ABB Group of companies operates in around 100 countries and employs about 104,000 people.

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    Skagerrak 1,2 Converter station Kristiansand

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