Where do electric trains get power?

Electricity is typically generated in large and relatively efficient generating stations, transmitted to the railway network and distributed to the trains. Some electric railways have their own dedicated generating stations and transmission lines, but most purchase power from an electric utility.



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Power is supplied to moving trains with a (nearly) continuous conductor running along the track that usually takes one of two forms: an overhead line, suspended from poles or towers along the track or from structure or tunnel ceilings, or a third rail mounted at track level and contacted by a sliding pickup shoe.

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Most overhead railway cables carry a voltage of 25,000 volts (25kV) in order to power electric trains. This is roughly 100 times more powerful than the electricity used in your home.

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The number of route miles electrified in these years was answered to a written question in parliament. In November 2019 the annual statistics for route miles electrified was published by the DfT and shows that 38% of the UK network is now electrified.

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Train tracks in UK are electrified so that they can provide power to the electric locomotive our the electric traction motors of the train.

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Certain electric traction systems provide Regenerative brakes. The energy generated by the train is converted into electricity and return it to the power system that is available to be used by other trains, or to the utility grid in general.

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Disadvantages of electric traction include: high capital costs that may be uneconomic on lightly trafficked routes, a relative lack of flexibility (since electric trains need third rails or overhead wires), and a vulnerability to power interruptions.

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Although commonly called diesels, the locomotives actually are electrically driven. The diesel engine drives an alternator, which produces electricity to run electric motors mounted on the locomotive's axles.

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Trespassing on the railway is illegal and dangerous. You could be taken to court and face a £1,000 fine.

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Most trains don't have sewage tanks so anything in the toilet is dumped straight onto the tracks.

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Power Sockets: UK and European power sockets are available at every seat on newer trains. USB sockets are available in Business and Standard Premier on these trains. Older trains have UK and European power sockets in coaches 5, 14, and all Business Premier and Standard Premier coaches.

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The Swiss rail network is the largest fully electrified network in the world and one of only eleven to achieve this. China has the 2nd largest electrified railway length with over 70% of the network, after India overtook china having almost 80% of its railway network electrified.

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The Rail, Maritime and Transport union claims official data shows private train operators made £310 million in taxpayer-funded profits between March 2020 and September 2022.

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Some locomotives collect electricity from overhead cables, while others take power from a third “live” rail on the track. It is very expensive to build the lines or rails that carry the electric current, but electric locomotives are cleaner, quieter, faster, and more reliable than steam or diesel engines.

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Electric traction motors often produce electromagnetically induced noise. This high-pitch noise depends on the speed and torque level of the machine, as well as the motor type. Variable-frequency drives use pulse-width modulation, which introduces additional current harmonics and results in higher acoustic noise.

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The railways have traditionally used the IT earthing system at track-side to distribute the power for signalling, so that the source transformer's output is isolated from Earth, but all the installation's exposed conductive parts are directly connected to Earth.

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