The HVDC Visby–Näs is a bipolar HVDC electric power transmission system between Visby

Visby

-See also:* Battle of Visby* Gotland University College* List of governors of Gotland County-External links:* - Visby*...

 and a wind power

Wind power

Wind power is the conversion of wind energy into a useful form of energy, such as using wind turbines to make electricity, windmills for mechanical power, windpumps for water pumping or drainage, or sails to propel ships....

 centre near Näs on Gotland

Gotland

Gotland is a county, province, municipality and diocese of Sweden; it is Sweden's largest island and the largest island in the Baltic Sea. At 3,140 square kilometers in area, the region makes up less than one percent of Sweden's total land area...

, Sweden. The project went into service in 1999. The system operates at 80 kV with a maximum power of 50 megawatts. This HVDC system allows for voltage regulation in the connected AC systems.

Because obtaining a right-of-way for an overhead line is a lengthy and expensive procedure, the 70 kilometer line is constructed as an underground cable. Since an alternating current

Alternating current

In alternating current the movement of electric charge periodically reverses direction. In direct current , the flow of electric charge is only in one direction....

three-phase underground cable would have been more expensive, the HVDC system was selected for this project.

Sites

! Site >

Coordinates
Nas Static Inverter Plant	57°05′58"N 18°14′27"E
Visby Static Inverter Plant	57°37′29"N 18°21′18"E

External links

• Gotland: the first commercial HVDC Light project