Trip Value Recorder Drprdre; Disturbance Recorder Drprdre; Event Function; Measured Value Expander Block Range_Xp - ABB RED670 Product Manual

Line differential protection RED670 ANSI
Customized
Product version: 1.2
The event recorder logs all selected binary input signals
connected to the Disturbance report function. Each recording
can contain up to 150 time-tagged events.
The event recorder information is available for the disturbances
locally in the IED.
The event recording information is an integrated part of the
disturbance record (Comtrade file).

Trip value recorder DRPRDRE

Information about the pre-fault and fault values for currents and
voltages are vital for the disturbance evaluation.
The Trip value recorder calculates the values of all selected
analog input signals connected to the Disturbance report
function. The result is magnitude and phase angle before and
during the fault for each analog input signal.
The trip value recorder information is available for the
disturbances locally in the IED.
The trip value recorder information is an integrated part of the
disturbance record (Comtrade file).

Disturbance recorder DRPRDRE

The Disturbance recorder function supplies fast, complete and
reliable information about disturbances in the power system. It
facilitates understanding system behavior and related primary
and secondary equipment during and after a disturbance.
Recorded information is used for different purposes in the short
perspective (for example corrective actions) and long
perspective (for example functional analysis).
The Disturbance recorder acquires sampled data from selected
analog- and binary signals connected to the Disturbance report
function (maximum 40 analog and 96 binary signals). The binary
signals available are the same as for the event recorder function.
The function is characterized by great flexibility and is not
dependent on the operation of protection functions. It can
record disturbances not detected by protection functions. Up to
ten seconds of data before the trigger instant can be saved in
the disturbance file.
The disturbance recorder information for up to 100
disturbances are saved in the IED and the local HMI is used to
view the list of recordings.

Event function

When using a Substation Automation system with LON or SPA
communication, time-tagged events can be sent at change or
cyclically from the IED to the station level. These events are
created from any available signal in the IED that is connected to
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the Event function (EVENT). The event function block is used for
remote communication.
Analog and double indication values are also transferred
through EVENT function.
IEC61850 generic communication I/O function SPGGIO
IEC61850 generic communication I/O functions (SPGGIO) is
used to send one single logical signal to other systems or
equipment in the substation.
IEC61850 generic communication I/O functions MVGGIO
IEC61850 generic communication I/O functions (MVGGIO)
function is used to send the instantaneous value of an analog
signal to other systems or equipment in the substation. It can
also be used inside the same IED, to attach a RANGE aspect to
an analog value and to permit measurement supervision on that
value.

Measured value expander block RANGE_XP

The current and voltage measurements functions (CVMMXN,
CMMXU, VMMXU and VNMMXU), current and voltage sequence
measurement functions (CMSQI and VMSQI) and IEC 61850
generic communication I/O functions (MVGGIO) are provided
with measurement supervision functionality. All measured
values can be supervised with four settable limits: low-low limit,
low limit, high limit and high-high limit. The measure value
expander block (RANGE_XP) has been introduced to enable
translating the integer output signal from the measuring
functions to 5 binary signals: below low-low limit, below low
limit, normal, above high-high limit or above high limit. The
output signals can be used as conditions in the configurable
logic or for alarming purpose.
Fault locator LMBRFLO
The accurate fault locator is an essential component to
minimize the outages after a persistent fault and/or to pin-point
a weak spot on the line.
The fault locator is an impedance measuring function giving the
distance to the fault as a relative (in%) or an absolute value. The
main advantage is the high accuracy achieved by compensating
for load current and for the mutual zero-sequence effect on
double circuit lines.
The compensation includes setting of the remote and local
sources and calculation of the distribution of fault currents from
each side. This distribution of fault current, together with
recorded load (pre-fault) currents, is used to exactly calculate
the fault position. The fault can be recalculated with new source
data at the actual fault to further increase the accuracy.
Especially on heavily loaded long lines (where the fault locator is
most important) where the source voltage angles can be up to
1MRK505226-BUS D
ABB