Basic Ied Functions - ABB Relion 650 series RET650 Product Manual

ABB
Transformer protection RET650
Product version: 1.1
• Status indication LEDs
• Alarm indication LEDs which can
indicate three states with the colors
green, yellow and red, with user
printable label. All LEDs are configurable
from the PCM600 tool
• Liquid crystal display (LCD)
• Keypad with push buttons for control
and navigation purposes, switch for
selection between local and remote
control and reset
• Five user programmable function buttons
• An isolated RJ45 communication port for
PCM600

14. Basic IED functions

Self supervision with internal event
list
The Self supervision with internal event list
(INTERRSIG and SELFSUPEVLST) function
reacts 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 time synchronization to achieve a
common time base for the IEDs in a
protection and control system. This makes
comparison of events and disturbance data
between all IEDs in the 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 at
evaluation.
In the IED, the internal time can be
synchronized from a number of sources:
1MRK 504 127-BEN -
Issued: February 2011
• SNTP
• IRIG-B
• DNP
• IEC60870-5-103
Parameter setting groups ACTVGRP
Use the four sets of settings to optimize the
IED operation for different 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
system scenarios.
Test mode functionality TESTMODE
The protection and control IEDs have many
included functions. To make the testing
procedure easier, the IEDs include the feature
that allows individual blocking of a single-,
several-, or all functions.
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 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.
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