Binary Signal Transfer - ABB REB670 Applications Manual

1MRK 505 337-UUS -
Section 17
17.1
17.1.1
17.1.2
17.1.2.1
Application manual
Remote communication

Binary signal transfer

Identification
Function description
Binary signal transfer
Binary signal transfer
Application
The IEDs can be equipped with communication devices for line differential
communication and/or communication of binary signals between IEDs. The same
communication hardware is used for both purposes.
Communication between two IEDs geographically on different locations is a fundamental
part of the line differential function.
Sending of binary signals between two IEDs, one in each end of a power line is used in
teleprotection schemes and for direct transfer trips. In addition to this, there are
application possibilities, for example, blocking/enabling functionality in the remote
substation, changing setting group in the remote IED depending on the switching situation
in the local substation and so on.
When equipped with a LDCM, a 64 kbit/s communication channel can be connected to the
IED, which will then have the capacity of 192 binary signals to be communicated with a
remote IED.
Communication hardware solutions
The LDCM (Line Data Communication Module) has an optical connection such that two
IEDs can be connected over a direct fibre (multimode), as shown in figure 191. The
protocol used is IEEE/ANSI C37.94. The distance with this solution is typical 110 km/68
miles.
Remote communication
IEC 61850 IEC 60617
identification identification
BinSignReceive -
BinSignTransm -
Section 17
ANSI/IEEE C37.2
device number
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455