to internal system events generated by the
different built-in self-supervision elements. The
internal events are saved in an internal event list.
Time synchronization
Use a common global source for example GPS
time synchronization inside each substation as
well as inside the area of the utility responsibility
to achieve a common time base for the IEDs in a
protection and control system. This makes
comparison and analysis of events and
disturbance data between all IEDs in the power
system possible.
Time-tagging of internal events and disturbances
are an excellent help when evaluating faults.
Without time synchronization, only the events
within the IED can be compared to one another.
With time synchronization, events and
disturbances within the entire station, and even
between line ends, can be compared during
evaluation.
In the IED, the internal time can be synchronized
from a number of sources:
• SNTP
• IRIG-B
• DNP
• IEC60870-5-103
Parameter setting groups ACTVGRP
Use the four different groups of settings to
optimize the IED operation for different power
system conditions. Creating and switching
between fine-tuned setting sets, either from the
local HMI or configurable binary inputs, results in
a highly adaptable IED that can cope with a
variety of power system scenarios.
Test mode functionality TESTMODE
The protection and control IEDs may have many
included functions. To make the testing
procedure easier, the IEDs include the feature
that allows individual blocking of all functions
except the function(s) the shall be tested.
There are two ways of entering the test mode:
• By configuration, activating an input signal of
the function block TESTMODE
• By setting the IED in test mode in the local
HMI
While the IED is in test mode, all protection
functions are blocked.
Any function can be unblocked individually
regarding functionality and event signaling. This
enables the user to follow the operation of one or
several related functions to check functionality
and to check parts of the configuration, and so
on.
Change lock function CHNGLCK
Change lock function (CHNGLCK) is used to
block further changes to the IED configuration
and settings once the commissioning is complete.
The purpose is to block inadvertent IED
configuration changes beyond a certain point in
time.
Authority status ATHSTAT
Authority status (ATHSTAT) function is an
indication function block for user log-on activity.
Authority check ATHCHCK
To safeguard the interests of our customers, both
the IED and the tools that are accessing the IED
are protected, by means of authorization
handling. The authorization handling of the IED
and the PCM600 is implemented at both access
points to the IED:
• local, through the local HMI
• remote, through the communication ports
14. Station communication
IEC 61850-8-1 communication protocol
The IED supports the communication protocols
IEC 61850-8-1 and DNP3 over TCP/IP. All
operational information and controls are available
through these protocols. However, some
communication functions, for example, horizontal
communication (GOOSE) between the IEDs, is
only enabled by the IEC 61850-8-1
communication protocol.
The IED is equipped with an optical Ethernet rear
port for the substation communication standard
IEC 61850-8-1. IEC 61850-8-1 protocol allows
intelligent electrical devices (IEDs) from different
vendors to exchange information and simplifies
system engineering. Peer-to-peer communication
according to GOOSE is part of the standard.
Disturbance files uploading is provided.
Breaker protection REQ650
1MRK 505 283-BEN -
Product version: 1.2
ABB 27
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