IEEE Electrification - September 2020 - 75

in the file. Each file has one to many CEBDs. A CEBD is a
record made every 5 min having the data as described in
the section "Trains Moving Traveling Consumers."
Figure 6 describes the data structure for a ReadingBlock. This structure can contain the same data as a CEBDBlock, but is standardized to transmit much more data
from the EMS to the DCS. It may also be used to transmit
data at 1-min intervals. It can also contain other information like speed (available from the GPS connected to the
EMS), temperature (some sensors include them to correct
their measurements), and internal loads (if other sensors
measure current direct to, for example, air conditioning).
The channel (in Figure 6) is not only used for the energy consumed or regenerated during a time period. It may
also include index values (as a register), four quadrant
reactive data, currents, and voltages. All of these elements
can have the minimum value, maximum value, and/or
average value in each time period.

and/or EventSet) from the EMS to the DCS. These messages are sent every hour. The RequestMessage in Figure 8
can be used to request missing data or to request data that
are not automatically transferred to ground. The EMS
includes the requested data in the payload of a ResponseMessage. If not all requested data are available, an error
message is included in the reply element.

Communication Architecture
As the EMS is installed onboard, mobile communication
to ground is essential. EN 61375-2-6 is used when the EMS
is connected via a network to a communication gateway
onboard. This standard can also be used for a dedicated
communications unit. Only when such communications
architecture is not available can a dedicated wireless connection be used.

From Energy Meter to Invoice

Message Mechanisms

The Process Map

Figure 7 describes the default method used to automatically transfer data blocks (like CEBDBlock, ReadingBlock,

Figure 9 shows a process map of the data flow related to
energy metering and billing.

CEBDBlockType
EMS
MeasurementInterval
CEBDType
CEBDID
TimeStamp
TimeStampQuality
ChannelType
ChannelID
TractionSystem
EnergyType
ActiveType

CEBDBlock
CEBD
1...∞

Channel

Consumed

1...∞

Active
Regenerated

ReactiveType
Energy

Consumed
Reactive
Regenerated

Quality

Location

Signature

Figure 5. The CEBDBlock structure, created with XMLSpy from CEBDBlock.xsd as defined in EN 50463-4:2017.

	

IEEE Elec trific ation Magazine / S EP T EM BE R 2 0 2 0

75



IEEE Electrification - September 2020

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

Contents
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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
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https://www.nxtbook.com/nxtbooks/pes/electrification_december2020
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