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high-voltage direct current

   Also found in: Wikipedia 0.01 sec.
high-voltage direct current [′hī ¦vōl·tij di¦rekt ′kə·rənt]
(electricity)
A long-distance direct-current power transmission system that uses direct-current voltages up to about 1 megavolt to keep transmission losses down. Abbreviated HVDC.


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ABB pioneered high-voltage direct current (HVDC) transmission technology more than 50 years ago, and the introduction of HVDC Light 10 years ago represented a landmark evolution that enabled a host of new applications including wind parks far out at sea and underground power transmission over large distances.
The proposed grid would use high-voltage direct current (DC) transmission lines, which lose less energy over distance than conventional alternating current (AC) lines.
The modernization project involved refurbishing the 3,100-megawatt, high-voltage direct current (HVDC) converter station with high efficiency, state-of-the-art thyristor valves to replace the older mercury arc valves, and to consolidate the facility into one location on the east side of the 5 Freeway.
 
 
 
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