
DC transmission
DC transmission involves sending electrical power as direct current (DC) rather than alternating current (AC). It is efficient for transmitting electricity over long distances because it reduces energy losses associated with AC, such as reactive power and electromagnetic interference. High-voltage DC (HVDC) systems are used for bulk power transfer, especially between distant locations or across underwater cables. DC transmission requires converting AC to DC at the start and back to AC at the destination using power converters. This method ensures more efficient, stable, and cost-effective long-distance electricity delivery, especially for specific applications like undersea cables or intercontinental power links.