Terranora interconnector

Directlink (Terranora) Interconnector is a mixed buried and above ground 59 kilometre (37 mi) High Voltage Direct Current (HVDC) electricity transmission cable route from near Lavertys Gap (28°34′15″S 153°27′8″E / 28.57083°S 153.45222°E / -28.57083; 153.45222 (Directlink - Mullumbimby Static Inverter Plant)), 5 kilometres (3.1 mi) Southwest of Mullumbimby, New South Wales and Bungalora (28°15′20″S 153°28′20″E / 28.25556°S 153.47222°E / -28.25556; 153.47222 (Directlink - Bungalora Static Inverter Plant)) & connected via a 3.5 km (2.2 mi) AC Overhead Transmission Line to the NorthEast to the Terranora Electrical Substation (28°14′28.3″S 153°30′12.7″E / 28.241194°S 153.503528°E / -28.241194; 153.503528 (Essential Energy - Terranora Electrical Substation)) @ Terranora, New South Wales in Eastern Australia.

[1] The interconnector was developed by a joint venture of NorthPower (later Country Energy), TransÉnergie–a subsidiary of Hydro-Québec, and Fonds de solidarité FTQ.

[2][3] The motivation to build the interconnector was the power shortage in Southern Queensland and surplus capacities in New South Wales.

[6] In December 2006, it was announced that Directlink would be purchased by Australian Pipeline Trust (APT, a part of APA Group) for US$133 million.

[14] HVDC VSC was chosen for this project for reasons of low environmental impact of the transmission route and the ability of the IGBT converter stations at each end to accurately control both real and reactive power.