How much power does a passenger train take?

0ceanborn 13593 12

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#1 17657031 28 Dec 2018 09:58

0ceanborn 0ceanborn

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Post #1
17657031 28 Dec 2018 09:58

Hi :)

I've been thinking about a technical solution recently, but I don't know enough. I mean what power is consumed by an average passenger train, e.g. 8 cars, not overcrowded and assuming that it has already collapsed to a speed of 110 km/h and maintains only this speed. I tried to calculate it more or less and I came up with strange things, so I am asking you for help. I mean the order of magnitude - how much is approximately kilowatts.
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#2 17657059 28 Dec 2018 10:21

Anonymous Anonymous

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Post #2
17657059 28 Dec 2018 10:21

About 600 A at 3000 V, so 1800 kW.
https://www.youtube.com/watch?v=EwEIvNCBMUk
#3 17657075 28 Dec 2018 10:30

nuszek nuszek

Level 30

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Post #3
17657075 28 Dec 2018 10:30

You can read more here, although it's quite old.
link
I am curious myself how much electricity the Pendolino consumes, e.g. at 120 km/h /3000 V network/,
there is probably a measurement in the cabin - maybe there are drivers here.
#4 17657181 28 Dec 2018 11:24

Rezystor240 Rezystor240

Level 42

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Post #4
17657181 28 Dec 2018 11:24

nuszek wrote:
I am curious myself how much electricity the Pendolino consumes, e.g. at 120 km/h /3000 V network/,

https://www.youtube.com/watch?v=0VJlQm553cI
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#5 17658489 28 Dec 2018 19:24

buczkog buczkog

Level 16

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Post #5
17658489 28 Dec 2018 19:24

Kol. Rezystor240, apart from the voltage of about 2800-3200V, nothing results. The previous posts show that the voltage is about 3000V, the current is about 600A (we do not count the heating of the cars because it adds a lot to the total power). It still gives, as the previous speakers wrote, ok. 8MW of energy.
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#6 17658509 28 Dec 2018 19:30

karolark karolark

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Post #6
17658509 28 Dec 2018 19:30

buczkog wrote:
It still gives, as the previous speakers wrote, ok. 8MW of energy.

On the fingers, other numbers come out
#7 17658645 28 Dec 2018 20:06

nuszek nuszek

Level 30

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Post #7
17658645 28 Dec 2018 20:06

atom1477 wrote:
About 600 A at 3000 V, so 1800 kW.
https://www.youtube.com/watch?v=EwEIvNCBMUk
#8 17658717 28 Dec 2018 20:31

vodiczka vodiczka

Level 43

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Post #8
17658717 28 Dec 2018 20:31

http://www.transportszynowy.pl/lokedane.php#ep07
EP 07 electric locomotive - maximum continuous power = 2000kW; Vmax = 125 km/h
EP 09 electric locomotive - maximum continuous power = 2900kW; Vmax = 160km/h

It can be estimated that with a composition of 8 cars and a speed of 110 km / h, the power will be in line with what was given by atom 1477 in post # 2 and even lower. If I read the data from the links correctly, the current consumption was about 400A at a speed of 95km/h.
#9 17659713 29 Dec 2018 10:39

Anonymous Anonymous

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Post #9
17659713 29 Dec 2018 10:39

nuszek wrote:

atom1477 wrote:
About 600 A at 3000 V, so 1800 kW.
https://www.youtube.com/watch?v=EwEIvNCBMUk
#10 17659739 29 Dec 2018 10:54

Parowy Parowy

Level 22

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Post #10
17659739 29 Dec 2018 10:54

nuszek wrote:
...maybe there are mechanics here

There are, there is a whole encyclopedia :)

https://www.elektroda.pl/rtvforum/topic366024.html
#11 17683005 07 Jan 2019 16:11

Anonymous Anonymous

Anonymous

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Post #11
17683005 07 Jan 2019 16:11

Good morning,

the current consumption will of course depend on the power of the locomotive. Modern passenger locomotives are vehicles with a continuous power of about 6 MW (this includes the power used to power traction motors and power auxiliary systems). In order to calculate the current drawn from the network, this power must be divided by the appropriate efficiency factor of the converter. To this must be added the power used to power the train's heating system. The sum of these powers is then divided by the mains voltage.

The maximum permitted mains current for a train is given in EN 50388-1. In Poland it is 2500 A.
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#12 17683025 07 Jan 2019 16:24

vodiczka vodiczka

Level 43

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Post #12
17683025 07 Jan 2019 16:24

stench wrote:
the current consumption will of course depend on the power of the locomotive.
It is correct to say "maximum current consumption depends on the power of the locomotive."
Actual consumption depends on train weight and driving conditions (speed, gradient, etc.)

The author's question is:
0ceanborn wrote:
...what power is consumed by an average passenger train, e.g. 8 cars, not overcrowded and assuming that it has already limped to a speed of 110 km/h and only maintains this speed.
it does not ask for the maximum power of the locomotive.
#13 17685324 08 Jan 2019 15:01

Anonymous Anonymous

Anonymous

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Post #13
17685324 08 Jan 2019 15:01

vodichka , You're right. I don't know if my previous post was necessary.

Therefore, to calculate the energy consumed from the network by an 8-car, accelerated to 110 km/h and maintaining this speed (i.e. the tractive force will balance the resistance to motion), I used the formula developed for Polish railways by the Railway Science and Technology Center, which can be found on the Institute's website of Electrical Power Engineering of the Lodz University of Technology ( presentation, page 12 ). The result is approx 1.26 MW with movement resistance 41.39kN . Then, assuming a gear efficiency of 98%, we get the result 1.29 MW needed to power the motors through the converter.
Then, taking into account all the losses on the way from the traction motors to the current collector, we multiply this result by the efficiency factor (about 0.88÷0.9) and add the power of the train heating system (after all, it is a passenger train) - the maximum value in the range of 800 kW . So we have the power drawn from the grid approx 2230kW .

When we divide this quantity by the voltage of 3 kV, we get a current of approx 740A .

Although these are purely theoretical calculations (data, however, correspond to modern locomotives), it seems to me that such an estimate of the power consumed can be accepted.
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Topic summary

The discussion centers on the power consumption of an average passenger train, specifically one with eight cars traveling at a speed of 110 km/h. Responses indicate that the power consumption can vary, with estimates ranging from approximately 1.26 MW to 8 MW depending on factors such as locomotive power, efficiency, and additional systems like heating. Key figures mentioned include a current draw of about 600 A at 3000 V, resulting in around 1800 kW. The conversation also references specific electric locomotives, such as the EP 07 and EP 09, with maximum continuous powers of 2000 kW and 2900 kW, respectively. The importance of considering train weight, driving conditions, and efficiency factors in calculating actual power consumption is emphasized.
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How much power does a passenger train take?

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