Alternatives To Traction Current Lines
In Sweden, Norway and some areas of the former GDR three phase AC-current from the public grid is converted into single phase AC current with a frequency of 16.7 cycles per second in substations close to the railways. In these regions there are no traction current lines.
Also in countries in which the electric trains run with direct current or with single phase AC current with the frequency of the general power grid, the required conversion of the current is performed in the substations, so that in these countries no traction current lines are needed.
Read more about this topic: Traction Power Network
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