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Maximum train current - Proposal for extension of infrastructure scheme in railML 2.4 [message #1693] Sun, 28 January 2018 23:13 Go to next message
Dr. Thorsten Frenzke is currently offline  Dr. Thorsten Frenzke
Messages: 1
Registered: January 2018
Junior Member
Dear all,

on some line sections with electric traction system the maximum
allowable current and power of a train is limited by the electrification
(see also EN 50388).
This may have influence on acceleration, running times and energy
consumption, especially of high speed trains and multiple unit formations.

Up to now there is no railML-element or attribute for considering such
limitations.

I propose to extend the electrificationChange-element with an optional
attribute "maxTrainCurrent".

The maxTrainCurrent shall be expressed in amperes, e.g. unit is 1 A.

Possible values are the typical values under normal conditions (e.g.
600, 900, 1200 for 15 kV systems), none and "other:..".

Sometimes, e.g. in Germany, there are different maximum allowable
currents for passenger and freight trains.

There is also a maximum allowable train current per pantograph at
standstill.

Maybe it makes sense to add other optional attributes for this.

With best regards,
--
Dr. Thorsten Frenzke
Siemens AG
Mobility Division
MO RS EN PT SD
Werner-von-Siemens-Str. 61
91052 Erlangen, Deutschland

Siemens Aktiengesellschaft: Vorsitzender des Aufsichtsrats: Gerhard
Cromme; Vorstand: Joe Kaeser, Vorsitzender; Roland Busch, Lisa Davis,
Klaus Helmrich, Janina Kugel, Cedrik Neike, Michael Sen, Ralf P. Thomas;
Sitz der Gesellschaft: Berlin und München, Deutschland; Registergericht:
Berlin Charlottenburg, HRB 12300, München, HRB 6684; WEEE-Reg.-Nr. DE
23691322
Re: Maximum train current - Proposal for extension of infrastructure scheme in railML 2.4 [message #1694 is a reply to message #1693] Mon, 29 January 2018 10:34 Go to previous messageGo to next message
christian.rahmig is currently offline  christian.rahmig
Messages: 447
Registered: January 2016
Senior Member
Dear Mr. Frenzke,

thank you for bringing up the topic of maximum train currents that I
would like to comment on from railML.org side:

Am 28.01.2018 um 23:13 schrieb Dr. Thorsten Frenzke:
> Dear all,
>
> on some line sections with electric traction system the maximum
> allowable current and power of a train is limited by the electrification
> (see also EN 50388).
> This may have influence on acceleration, running times and energy
> consumption, especially of high speed trains and multiple unit formations.
>
> Up to now there is no railML-element or attribute for considering such
> limitations.

That is correct for railML 2.x. In railML 3.1 beta that had been
released on October 31, 2018, a first version of the maximum train
current topic has already been implemented.

An example based on this implementation in the infrastructure scheme
looks like this:

<electrification>
<energyCatenary maxPantoCurrentStandstill="800"
maxTrainCurrentDriving="3000"/>
</electrification>

The values are given in Amperes [A].

> Sometimes, e.g. in Germany, there are different maximum allowable
> currents for passenger and freight trains.

In order to allow for train category specific maximum train currents, a
modification of the schema has been discussed. The adapted example would
look like this:

<electrification>
<energyCatenary maxPantoCurrentStandstill="800">
<maxTrainCurrentDriving maxCurrent="3000" trainType="passenger"/>
<maxTrainCurrentDriving maxCurrent="1200" trainType="freight"/>
</energyCatenary>
</electrification>

> Maybe it makes sense to add other optional attributes for this.

I would like to direct this question to the infrastructure managers and
electrification experts:
Are there any further parameters that are relevant for the maximum train
current? Any feedback is appreciated...

Best regards
Christian

--
Christian Rahmig - Infrastructure scheme coordinator
railML.org (Registry of Associations: VR 5750)
Phone Coordinator: +49 173 2714509; railML.org: +49 351 47582911
Altplauen 19h; 01187 Dresden; Germany www.railml.org


Christian Rahmig – Infrastructure scheme coordinator
railML.org (Registry of Associations: VR 5750)
Altplauen 19h; 01187 Dresden; Germany www.railML.org
Re: Maximum train current - Proposal for extension of infrastructure scheme in railML 2.4 [message #1695 is a reply to message #1694] Mon, 29 January 2018 11:14 Go to previous messageGo to next message
christian.rahmig is currently offline  christian.rahmig
Messages: 447
Registered: January 2016
Senior Member
Dear all,

I created a Trac ticket for the specific issue. It is available in [1].

[1] https://trac.railml.org/ticket/319

Best regards
Christian

Am 29.01.2018 um 10:34 schrieb Christian Rahmig:
> Dear Mr. Frenzke,
>
> thank you for bringing up the topic of maximum train currents that I
> would like to comment on from railML.org side:
>
> Am 28.01.2018 um 23:13 schrieb Dr. Thorsten Frenzke:
>> Dear all,
>>
>> on some line sections with electric traction system the maximum
>> allowable current and power of a train is limited by the electrification
>> (see also EN 50388).
>> This may have influence on acceleration, running times and energy
>> consumption, especially of high speed trains and multiple unit
>> formations.
>>
>> Up to now there is no railML-element or attribute for considering such
>> limitations.
>
> That is correct for railML 2.x. In railML 3.1 beta that had been
> released on October 31, 2018, a first version of the maximum train
> current topic has already been implemented.
>
> An example based on this implementation in the infrastructure scheme
> looks like this:
>
> <electrification>
> <energyCatenary maxPantoCurrentStandstill="800"
> maxTrainCurrentDriving="3000"/>
> </electrification>
>
> The values are given in Amperes [A].
>
>> Sometimes, e.g. in Germany, there are different maximum allowable
>> currents for passenger and freight trains.
>
> In order to allow for train category specific maximum train currents, a
> modification of the schema has been discussed. The adapted example would
> look like this:
>
> <electrification>
> <energyCatenary maxPantoCurrentStandstill="800">
> <maxTrainCurrentDriving maxCurrent="3000" trainType="passenger"/>
> <maxTrainCurrentDriving maxCurrent="1200" trainType="freight"/>
> </energyCatenary>
> </electrification>
>
>> Maybe it makes sense to add other optional attributes for this.
>
> I would like to direct this question to the infrastructure managers and
> electrification experts:
> Are there any further parameters that are relevant for the maximum train
> current? Any feedback is appreciated...
>
> Best regards
> Christian
>


--
Christian Rahmig - Infrastructure scheme coordinator
railML.org (Registry of Associations: VR 5750)
Phone Coordinator: +49 173 2714509; railML.org: +49 351 47582911
Altplauen 19h; 01187 Dresden; Germany www.railml.org


Christian Rahmig – Infrastructure scheme coordinator
railML.org (Registry of Associations: VR 5750)
Altplauen 19h; 01187 Dresden; Germany www.railML.org
Re: Maximum train current - Proposal for extension of infrastructure scheme in railML 2.4 [message #1697 is a reply to message #1695] Wed, 31 January 2018 15:13 Go to previous message
Gerben Schut is currently offline  Gerben Schut
Messages: 4
Registered: September 2016
Junior Member
Dear All,
I will search for the Dutch requirements for this subject, as I was asked by the RailML organization.
Regards,
Gerben Schut
ProRail, Netherlands
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