Section 5 Remote Communication - ABB RET670 Applications Manual

1MRK504116-UUS C
Section 5
5.1
5.1.1
5.1.1.1
Application manual
Remote communication
About this chapter
This chapter describes the remote end data communication possibilities through binary
signal transferring.
Binary signal transfer
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 326.
Remote communication
IEC 61850 IEC 60617
identification identification
BinSignReceive -
BinSignTransm -
Section 5
ANSI/IEEE C37.2
device number
-
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845