Detailed Differences Between High Voltage Direct Current (HVDC) and High Voltage Alternating Current (HVAC)

High Voltage Direct Current (HVDC) power transmission systems (also known as power highways or electric highways) use direct current (DC) to transmit power versus the more common alternating current (AC) systems. Most HVDC power transmission lines use voltages between 100 kV and 800 kV.

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