HVDC

HVDC sends bulk power as direct current over long distances with lower losses and links grids of different frequencies. Here is how it works.

Advantages of HVDC transmission: it links grids of different frequencies, controls power flow, cuts long-distance losses and suits subsea cables.

Components of an HVDC system: AC switchyard, converter transformer, converter station, smoothing reactor, DC switchyard and the HVDC line.

HVDC transmission needs costly converter stations, causes power-quality issues, uses lots of land, demands skilled upkeep, and has a shorter life.

HVAC vs HVDC: HVAC is cheaper for shorter lines, while HVDC carries bulk power further with lower losses and suits subsea cables.