Posts tagged as HVDC

DC grids: Emerging networks hold promise for the future

  Most HVDC systems to date have been point-to-point systems, designed to transmit power over long distances, or to interconnect networks with frequency instability. Multi-terminal systems are being developed to allow interconnection of multiple systems leading the way to the development of HV and MV DC grids. The focus with HVDC to date has been […]

HVDC connection of offshore wind power plants

  Driven by the EU’s 20% renewable energy target by 2020, the first wave of voltage-source converters (VSC) for high voltage, direct current (HVDC) connected offshore wind power plants (WPPs) have been commissioned around the world, but with a notable high concentration to be found in the North Sea. These early WPP projects have been […]

Converter transients imposed on HVDC converter transformers

  High voltage direct current (HVDC) line commutated converter (LCC) systems have been in operation for over 50 years. At present there are more than 100 systems in operation transmitting more than 100 000 MW of power. Converter transients, imposed on HVDC converter transformers, can produce voltages and currents which result in equipment failure. The […]

HVDC system provides additional power to neighbours

  ABB has commissioned a high-voltage direct current (HVDC) link between Norway and Denmark to increase availability of renewable hydroelectric and wind power in the region’s electricity grid. At 500 kV, the Skagerrak 4 link sets a new record in transmission voltage using Voltage Source Converters (VSC). The converters rely on semiconductors to convert electricity […]