high-voltage direct current


Also found in: Wikipedia.

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.
References in periodicals archive ?
This includes many specialized areas like high-voltage direct current (HVDC), Flexible Alternating Current Transmission Systems (FACTS), grid integration and automation as well as emerging areas like renewables and microgrids.
As with overhead and underground systems, many high-voltage subsea systems are moving toward high-voltage direct current (HVDC) technology, away from the historically prevalent alternating current (AC) technology.
One will be located onshore at Haugsneset, where it will turn alternating current (AC) from the grid into high-voltage direct current (DC), which can be transmitted efficiently over 200 km to the second station which is on one of the oil platforms.
The plan was chosen over "SeaLink," a proposal from New Hampshire Transmission--a subsidiary of NextEra Energy, owner of the Seabrook nuclear power plant--which proposed building a high-voltage direct current line from Seabrook, traveling under the ocean floor for 50 miles before surfacing in Everett, Mass.
In his time as Chairman, ABB launched many breakthrough innovations including a breaker for high-voltage direct current (HVDC), the revolutionary human-machine collaborative robot YuMi, and Emax2, the world's first low-voltage circuit breaker that also functions as an energy manager.
It is a type of substation which forms the terminal equipment for a high-voltage direct current transmission line.
The $2 billion Champlain Hudson Power Express will be designed to carry 1,000 MW of renewable energy via a high-voltage direct current line running underground and under water.
These stations will be connected to each other through a high-voltage direct current transmission grid relaying electricity to the European Grid via Mediterranean marine cables.
They cover principles of self-commutating conversion, multi-level voltage source conversion, multi-level reinjection, modelling and controlling converter dynamics, pulse-width-modulation high-voltage direct current transmission, ultra-high-voltage voltage-source conversion transmission, ultra-high-voltage self-commutating current-source conversion transmission, back-to-back asynchronous interconnection, low-voltage high-direct-current AC-DC conversion, and power conversion for high-energy storage.
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.
lABB said yesterday it has won contracts worth pounds 35 million for the installation of high-voltage direct current transmission systems between the eastern and western power grids of the US.
The transmission systems necessary to support this growth have been a mix of high-voltage direct current (HVDC), limited to long-distance point-to-point bulk power transmission, and traditional high-voltage alternating current (HVAC) transmission lines.

Full browser ?