High voltage d-c transmission power station with a generator...

Details High voltage d-c transmission power station with a generator... High voltage d-c transmission power station with a generator...

H - Electricity

02

J

321/24, 317/6

H02J 3/36 (2006.01) H01F 33/00 (1985.01)

Patent

CA 1222284

Abstract of the Disclosure: In the high voltage d-c transmission (HGU) power station in a block circuit, a three-phase generator feeds a 12-pulse high voltage d-c transmission (HGU) short coupler through at least one shifting transformer which serves for forming voltages of two three-phase voltage systems phase-shifted relative to each other by 30° el. As compared to a full transformer, the shifting transformer can be constructed for substantially less power, which reduces the cost and the losses of the station, While the voltages of the two phase-shifted voltage systems can be taken off at the external terminals of the secondary windings of the shifting trans- former, the center taps of the secondary windings are acted upon by the generator voltage. Advantageously, the high voltage d-c transmission short coupler is formed of a multiplicity of parallel, electrically separate d-c circuits which can be fed by separate shifting transformers.

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