525 kV HVDC Line, Portion I

Portion I of the ±525 kV high-voltage direct current (HVDC) overhead transmission line between the NIC South and YCNT converter stations, a 207 km section of a long-distance HVDC link. ±525 kV is one of the highest transmission voltages in use, chosen to move very large amounts of power over long distances efficiently.

SDEC provided engineering design for this 207 km portion of the line, working with Hyundai Engineering & Construction as the construction contractor. SDEC's overhead transmission line services cover line layouts, tower structures, foundations and coordinated design verification.