The HVDC Visby–Näs is a bipolar

HVDC A high-voltage direct current (HVDC) electric power transmission system uses direct current (DC) for electric power transmission, in contrast with the more common alternating current (AC) transmission systems. Most HVDC links use voltages betwe ...

electric power transmission Electric power transmission is the bulk movement of electrical energy from a generating site, such as a power plant, to an electrical substation. The interconnected lines that facilitate this movement form a ''transmission network''. This is ...

system between

Visby Visby () is an urban areas in Sweden, urban area in Sweden and the seat of Gotland Municipality in Gotland County on the island of Gotland with 24,330 inhabitants . Visby is also the episcopal see for the Diocese of Visby. The Hanseatic League, ...

and a

wind power Wind power is the use of wind energy to generate useful work. Historically, wind power was used by sails, windmills and windpumps, but today it is mostly used to generate electricity. This article deals only with wind power for electricity ge ...

centre near Näs on

Gotland Gotland (; ; ''Gutland'' in Gutnish), also historically spelled Gottland or Gothland (), is Sweden's largest island. It is also a Provinces of Sweden, province/Counties of Sweden, county (Swedish län), Municipalities of Sweden, municipality, a ...

, 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 (AC) is an electric current that periodically reverses direction and changes its magnitude continuously with time, in contrast to direct current (DC), which flows only in one direction. Alternating current is the form in w ...

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

Sites

External links

Gotland: the first commercial HVDC Light project
HVDC transmission lines Electric power infrastructure in Sweden Gotland Visby Energy infrastructure completed in 1999 1999 establishments in Sweden 20th-century establishments in Gotland County {{Gotland-geo-stub