The HVDC Tjæreborg is a 4.3 kilometre long bipolar high-voltage direct current

High-voltage direct current

A high-voltage, direct current electric power transmission system uses direct current for the bulk transmission of electrical power, in contrast with the more common alternating current systems. For long-distance transmission, HVDC systems may be less expensive and suffer lower electrical losses...

 (HVDC) electric power transmission

Electric power transmission

Electric-power transmission is the bulk transfer of electrical energy, from generating power plants to Electrical substations located near demand centers...

 line for demonstrating and testing DC interconnection of a wind park to the Danish

Denmark

Denmark is a Scandinavian country in Northern Europe. The countries of Denmark and Greenland, as well as the Faroe Islands, constitute the Kingdom of Denmark . It is the southernmost of the Nordic countries, southwest of Sweden and south of Norway, and bordered to the south by Germany. Denmark...

 power grid. The line was constructed to connect an existing onshore wind park consisting of 4 windmills in Tjæreborg Enge to the grid through an additional DC line. Thus the mills can be connected to the grid by both the new HVDC, the old AC or a combination of both lines.

The HVDC Tjæreborg was commissioned in 2000 and is designed for a voltage of 9 kV and a maximum power rating of 7.2 megawatt.

The technology of HVDC allows a better regulation of power peaks.

Sites

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Coordinates
Enge Static Inverter Plant	55°26′52"N 8°35′34"E
Tjæreborg Static Inverter Plant	55°28′07"N 8°33′36"E

External links

• www.abb.com Tjaereborg - an HVDC Light demonstration project for wind power