HVDC Troll

60°33′01″N 4°50′26″E / 60.55028°N 4.84056°E / 60.55028; 4.84056 (Kollsnes-Troll Transmission - Kollsnes Static Inverter Plant)
60°40′00″N 3°40′00″E / 60.66667°N 3.66667°E / 60.66667; 3.66667 (Kollsnes-Troll Transmission - Troll A Static Inverter Plant (situated on Troll A offshore platform))FromKollsnes Static Inverter PlantPasses throughNorth SeaToTroll A platformOwnership informationOwnerEquinorConstruction informationManufacturer of conductor/cableABBExpected2015 (3rd and 4th line)Commissioned2005 (1st and 2nd line)Technical informationTypeSubmarine power cableType of currentHVDCTotal length68 km (42 mi)Power rating84 MW
184 MW (after 2015)AC voltage132 kV (Kollsnes)
56 kV (Troll)DC voltage±60 kVNo. of poles2No. of circuits2

The HVDC Troll is a bipolar high-voltage direct current (HVDC) electric power transmission line for the supply of the gas compressor station on the offshore construction work Troll A platform. It consists of dual set of a 68-kilometre (42 mi) long bipolar submarine cable designed for ±60 kV between the inverter at the Troll A platform and the static rectifier station at Kollsnes in Norway. The HVDC Troll has a maximum transmission rate of 84 megawatt.

In 2013 work started on a new rectifier station at Kollsnes for supplying the two new compressors being installed on Troll A.

Sites

Site	Coordinates
Kollsnes Static Inverter Plant	60°33′01″N 4°50′26″E / 60.55028°N 4.84056°E / 60.55028; 4.84056 (Kollsnes-Troll Transmission - Kollsnes Static Inverter Plant)
Offshore platform Troll A	60°40′00″N 3°40′00″E / 60.66667°N 3.66667°E / 60.66667; 3.66667 (Kollsnes-Troll Transmission - Troll A Static Inverter Plant (situated on Troll A offshore platform))

References

Working Group on HVDC and FACTS Bibliography and Records (2008-07-07). "HVDC PROJECTS LISTING" (PDF). IEEE Transmission and Distribution Committee. Archived from the original (PDF) on 2008-12-15. Retrieved 2008-12-19.