[특집:HVDC 기술동향] Land and Sea Cable Interconnections with HVDC Light

HVDC Light is the most recent HVDC technology based on Voltage Source Converters and extruded DC cables with power units up to 300 MW. HVDC Light converters include Insulated Gate Bipolar Transistors and operate with high frequency Pulse Width Modulation in order to get high speed control of both active and reactive power. HVDC Light cable is a cable with insulation of extruded polymer and specifically adapted for direct voltage. Within its power range HVDC Light converters and cables provide an excellent combination for transmitting power over any distances with underground or submarine routes. Experiences are given from actual cases, presenting what problems can be resolved using this combination of technologies. The benefits of HVDC Light in applications to fulfil the goals of deregulation are accounted for in the paper.