CO:electrificationSystem

Introduction

The electrification system provides electrical energy to the trains, so they can operate without a prime mover on board. Mainline and tram systems normally have overhead wires, which hang from poles along the line. Grade-separated rapid transit sometimes use a ground third rail .

Third_rail () at Whitstable_railway_station ()	Overhead catenary at Pirna_station ()	Overhead catenary at Kazipet_Junction_railway_station ()

Electrification systems are further classified by three main parameters:

• Voltage
• Electric current
  • Direct current (DC)
  • Alternating current (AC)
    • Frequency

Selection of an electrification system is based on economics of energy supply, maintenance, and capital cost compared to the revenue obtained for freight and passenger traffic. Different systems are used for urban and intercity areas; some electric locomotives can switch to different supply voltages to allow flexibility in operation.

Documentation

Syntax

Autoexport from the XML-Schema for element CO:electrificationSystem of railML® version 3.3      UML-visualization of CO
Documentation	Used to define the electrification systems used in the railML document. An electrification system provides electric power for the propulsion of rail transport [wikipedia].
Subschema	common
Parents*	electrificationSystems
Children	designator (0..*)
Attributes: electrificationInterfaceType: Specifies the type of interface between the infrastructure and the rollingstock (optional; xs:string; patterns: other:w{2,}; consider Use of tOtherEnumerationValue too.) Possible values: overhead thirdRailBottom thirdRailSide thirdRailTop, frequency: electrification system frequency, in [Hz]; for DC the frequency shall be set to zero (optional; xs:decimal; minInclusive: 0; fractionDigits: 3), voltage: electrification system voltage, in [V] (optional; xs:decimal; fractionDigits: 1), id: the identifier of the object (obligatory; xs:ID); compare: Dev:Identities
*Notice: Elements may have different parent elements. As a consequence they may be used in different contexts. Please, consider this as well as a user of this Wiki as when developing this documentation further. Aspects that are only relevant with respect to one of several parents should be explained exclusively in the documentation of the respective parent element.

Autoexport from the XML-Schema for element CO:electrificationSystem of railML® version 3.2      UML-visualization of CO
Documentation	Used to define the electrification systems used in the railML document. An electrification system provides electric power for the propulsion of rail transport [wikipedia].
Subschema	common
Parents*	electrificationSystems
Children	None
Attributes: frequency: electrification system frequency, in [Hz]; for DC the frequency shall be set to zero (optional; xs:decimal; minInclusive: 0; fractionDigits: 3), voltage: electrification system voltage, in [V] (optional; xs:decimal; fractionDigits: 1), id: unique identifier (obligatory; xs:string; patterns: (urn:uuid:)?[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}|{[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}}); compare: Dev:Identities
*Notice: Elements may have different parent elements. As a consequence they may be used in different contexts. Please, consider this as well as a user of this Wiki as when developing this documentation further. Aspects that are only relevant with respect to one of several parents should be explained exclusively in the documentation of the respective parent element.

Autoexport from the XML-Schema for element CO:electrificationSystem of railML® version 3.1      UML-visualization of CO
Documentation	This element is not documented in the schema!
Subschema	common
Parents*	electrificationSystems
Children	None
Attributes: voltage: electrification system voltage, in [V] (optional; xs:decimal; fractionDigits: 1), frequency: electrification system frequency, in [Hz]; for DC the frequency shall be set to zero (optional; xs:decimal; minInclusive: 0; fractionDigits: 3), id: unique identifier (optional; xs:ID; patterns: (urn:uuid:)?[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}|{[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}}); compare: Dev:Identities
*Notice: Elements may have different parent elements. As a consequence they may be used in different contexts. Please, consider this as well as a user of this Wiki as when developing this documentation further. Aspects that are only relevant with respect to one of several parents should be explained exclusively in the documentation of the respective parent element.

Changes 3.1→3.2

There exists an overview of all changes between railML^® 3.1 and railML^® 3.2 on page Dev:Changes/3.2.

The element documentation has been changed.

The attributes have been changed.

Changes 3.2→3.3

There exists an overview of all changes between railML^® 3.2 and railML^® 3.3 on page Dev:Changes/3.3.

The children have been changed.

The attributes have been changed.

Best Practice / Examples

Please refer to <electrificationSection> for an example.