IEEE Electrification - September 2020 - 72

TSO
DSO

Production Is Not Part
of Electrical Supply Equipment

Substation

Overhead Contact Line

Figure 1. Electrical supply equipment.

this standard becomes a harmonized standard. Compliance with
the requirements of a standard is
sufficient to provide compliance to
the relevant requirements of the
TSI and thus of the directive.
Nonelectrified
750-V dc
1.5-kV dc
3-kV dc
15-kV, 16.7-Hz ac

Onboard Energy Measuring
The Energy Measuring System

In 2007, the European Committee
for Electrotechnical Standardization
25-kV, 50-Hz ac
(CENELEC) received a request from
1.5 kV + 25 kV
the European Union Agency for Railways. The aim of the request was to
develop a standard that would cover
the full requirements for an onboard
energy measuring system (EMS).
The EMS assesses the electric
energy taken from or returned (during regenerative braking) to the
Figure 2. Traction systems. (Source: https://en.wikipedia.org/wiki/Railway_electrification_system.)
overhead contact line by the traction unit. A traction unit is the part
The European Framework
of a train that contains the motorEuropean directives describe the principles of the railway
ization. This can be a locomotive but can also be a fixed
framework. Railway Market Directive 2012/34 describes
set of vehicles having distributed motorization.
how IMs should organize the railway market and how RUs
The main functions of an EMS are listed next and
can request access to operate trains.
described in Figure 3:
xx
energy measurement function (EMF), which includes
Railway Interoperability Directive 2016/797 describes
voltage and current measurement and calculation of
the technical principles needed to permit trains running
energy data;
on different networks. This directive defines different
xx
data handling system (DHS), which includes merging
subsystems like, for example, rolling stock and electrical
data from the EMF with time data and geographical
supply equipment.
position, producing and storing the compiled energy
Technical specifications for interoperability (TSIs)
billing data (CEBD) ready to be sent by a communicadefine the basic parameters for these subsystems. The TSI
tion system;
for locomotives and passenger rolling stock (LOC&PAS)
xx
location function, which provides geographical posimanages the locomotives and the carriages for passention of the traction unit.
ger transport. The TSI for energy handles the electrical
The aforementioned functions may be performed
supply equipment.
by individual devices or combined in one or more inteStandards define the technical requirements for the
grated assemblies.
systems or products. When a TSI refers to a standard, then

72

I E E E E l e c t r i f i cati o n M agaz ine / SEPTEMBER 2020



https://en.wikipedia.org/wiki/Railway_electrification_system

IEEE Electrification - September 2020

Table of Contents for the Digital Edition of IEEE Electrification - September 2020

Contents
IEEE Electrification - September 2020 - Cover1
IEEE Electrification - September 2020 - Cover2
IEEE Electrification - September 2020 - Contents
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IEEE Electrification - September 2020 - Cover3
IEEE Electrification - September 2020 - Cover4
https://www.nxtbook.com/nxtbooks/pes/electrification_december2022
https://www.nxtbook.com/nxtbooks/pes/electrification_september2022
https://www.nxtbook.com/nxtbooks/pes/electrification_june2022
https://www.nxtbook.com/nxtbooks/pes/electrification_march2022
https://www.nxtbook.com/nxtbooks/pes/electrification_december2021
https://www.nxtbook.com/nxtbooks/pes/electrification_september2021
https://www.nxtbook.com/nxtbooks/pes/electrification_june2021
https://www.nxtbook.com/nxtbooks/pes/electrification_march2021
https://www.nxtbook.com/nxtbooks/pes/electrification_december2020
https://www.nxtbook.com/nxtbooks/pes/electrification_september2020
https://www.nxtbook.com/nxtbooks/pes/electrification_june2020
https://www.nxtbook.com/nxtbooks/pes/electrification_march2020
https://www.nxtbook.com/nxtbooks/pes/electrification_december2019
https://www.nxtbook.com/nxtbooks/pes/electrification_september2019
https://www.nxtbook.com/nxtbooks/pes/electrification_june2019
https://www.nxtbook.com/nxtbooks/pes/electrification_march2019
https://www.nxtbook.com/nxtbooks/pes/electrification_december2018
https://www.nxtbook.com/nxtbooks/pes/electrification_september2018
https://www.nxtbook.com/nxtbooks/pes/electrification_june2018
https://www.nxtbook.com/nxtbooks/pes/electrification_december2017
https://www.nxtbook.com/nxtbooks/pes/electrification_september2017
https://www.nxtbook.com/nxtbooks/pes/electrification_march2018
https://www.nxtbook.com/nxtbooks/pes/electrification_june2017
https://www.nxtbook.com/nxtbooks/pes/electrification_march2017
https://www.nxtbook.com/nxtbooks/pes/electrification_june2016
https://www.nxtbook.com/nxtbooks/pes/electrification_december2016
https://www.nxtbook.com/nxtbooks/pes/electrification_september2016
https://www.nxtbook.com/nxtbooks/pes/electrification_december2015
https://www.nxtbook.com/nxtbooks/pes/electrification_march2016
https://www.nxtbook.com/nxtbooks/pes/electrification_march2015
https://www.nxtbook.com/nxtbooks/pes/electrification_june2015
https://www.nxtbook.com/nxtbooks/pes/electrification_september2015
https://www.nxtbook.com/nxtbooks/pes/electrification_march2014
https://www.nxtbook.com/nxtbooks/pes/electrification_june2014
https://www.nxtbook.com/nxtbooks/pes/electrification_september2014
https://www.nxtbook.com/nxtbooks/pes/electrification_december2014
https://www.nxtbook.com/nxtbooks/pes/electrification_december2013
https://www.nxtbook.com/nxtbooks/pes/electrification_september2013
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