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History
Nelson River DC Transmission System
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The Nelson River DC Transmission System, also known as the Manitoba Bipole, is an electric power transmission system of three high voltage, direct current lines in Manitoba, Canada, operated by Manitoba Hydro as part of the Nelson River Hydroelectric Project. It is now recorded on the list of IEEE Milestones in electrical engineering. Several records have been broken by successive phases of the project, including the largest mercury-arc valves, the highest DC transmission voltage and the first use of water-cooled thyristor valves in HVDC.
Nelson River Bipoles 1 and 2 terminate at Dorsey Converter Station near Rosser, Manitoba. The station takes HVDC current and converts it to HVAC curre
Nelson River Bipoles 1 and 2 terminate at Dorsey Converter Station near Rosser, Manitoba. The station takes HVDC current and converts it to HVAC current for re-distribution to consumers
Dorsey Converter Station near Rosser, Manitoba – August, 2005
Dorsey Converter Station near Rosser, Manitoba – August, 2005
A 150 kV mercury arc valve in Bipole 1 of Manitoba Hydro's Radisson converter station, August 2003. By the end of 2004 all of these mercury arc valves
A 150 kV mercury arc valve in Bipole 1 of Manitoba Hydro's Radisson converter station, August 2003. By the end of 2004 all of these mercury arc valves had been replaced with solid state thyristors.
The Bipole 2 thyristors: Six parallel-connected pairs of thyristors in a module, with cooling piping and voltage grading capacitors.
The Bipole 2 thyristors: Six parallel-connected pairs of thyristors in a module, with cooling piping and voltage grading capacitors.
High-voltage direct current
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A high-voltage direct current (HVDC) electric power transmission system uses direct current (DC) for electric power transmission, in contrast with the more common alternating current (AC) transmission systems.
Long distance HVDC lines carrying hydroelectricity from Canada's Nelson River to this converter station where it is converted to AC for use in souther
Long distance HVDC lines carrying hydroelectricity from Canada's Nelson River to this converter station where it is converted to AC for use in southern Manitoba's grid
HVDC in 1971: this 150 kV mercury-arc valve converted AC hydropower voltage for transmission to distant cities from Manitoba Hydro generators.
HVDC in 1971: this 150 kV mercury-arc valve converted AC hydropower voltage for transmission to distant cities from Manitoba Hydro generators.
Pylons of the Baltic Cable HVDC in Sweden
Pylons of the Baltic Cable HVDC in Sweden
Three-phase high voltage transmission lines use alternating currents to distribute power over long distances between electric generation plants and co
Three-phase high voltage transmission lines use alternating currents to distribute power over long distances between electric generation plants and consumers. The lines in the picture are located in eastern Utah.