ABB RET670 Applications Manual

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

ABB RET670 Specifications

General

Rated Frequency	50/60 Hz
Inputs	Analog and binary inputs
Application	Protection of power systems
Communication Protocols	IEC 61850, DNP3, Modbus
Operating Temperature Range	-25°C to +55°C
Mounting	Rack mounted
Number of Binary Inputs	Up to 48
Number of Binary Outputs	32
Protection Functions	Overcurrent Protection
Outputs	Binary outputs
Enclosure	IP 54
Type	Line Differential Protection
Number of Analog Inputs	24