HVDC Troll
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.
| HVDC Troll | |
|---|---|
| Location | |
| Country | Norway |
| Coordinates | 60°33′01″N 4°50′26″E 60°40′00″N 3°40′00″E |
| From | Kollsnes Static Inverter Plant |
| Passes through | North Sea |
| To | Troll A platform |
| Ownership information | |
| Owner | Equinor |
| Construction information | |
| Manufacturer of conductor/cable | ABB |
| Expected | 2015 (3rd and 4th line) |
| Commissioned | 2005 (1st and 2nd line) |
| Technical information | |
| Type | Submarine power cable |
| Type of current | HVDC |
| Total length | 68 km (42 mi) |
| Power rating | 84 MW 184 MW (after 2015) |
| AC voltage | 132 kV (Kollsnes) 56 kV (Troll) |
| DC voltage | ±60 kV |
| No. of poles | 2 |
| No. of circuits | 2 |
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 |
| Offshore platform Troll A | 60°40′00″N 3°40′00″E |
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