High voltage direct current (HVDC) is a technology
used for transmitting large amounts of electrical power over long distances,
typically between different regions or countries. Unlike the more common
alternating current (AC) power transmission, HVDC systems use a direct current
(DC) voltage to transmit power. This is achieved by converting the AC power
from the grid into DC power, which can then be transmitted over long distances
with minimal losses.
One of the main advantages is that DC power can be transmitted over longer distances with lower losses than AC power. This is because AC power experiences losses due to resistance in the power lines, which increases with the length of the line. In contrast, DC power experiences lower losses because it does not have the same resistance issues as AC power. Another advantage of HVDC transmission is that it can be used to connect power grids that operate at different frequencies or with different phases. This makes it possible to integrate renewable energy sources, such as wind and solar power, into the grid more effectively
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