ABB REL670 Product Manual page 43

Line distance protection REL670 2.2
Product version: 2.2
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
recorder function (maximum 40 analog and 352 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
the Event function (EVENT). The EVENT function block is used
for LON and SPA communication.
Analog, integer and double indication values are also
transferred through the EVENT function.
Generic communication function for Single Point indication
SPGAPC
Generic communication function for Single Point indication
(SPGAPC) is used to send one single logical signal to other
systems or equipment in the substation.
Generic communication function for measured values
MVGAPC
Generic communication function for measured values
(MVGAPC) 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.
ABB
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 (MVGAPC) 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 limit or above high-high
limit. The output signals can be used as conditions in the
configurable logic or for alarming purpose.
Insulation supervision for gas medium function SSIMG
Insulation supervision for gas medium (SSIMG) is used for
monitoring the circuit breaker condition. Binary information
based on the gas pressure in the circuit breaker is used as input
signals to the function. In addition, the function generates
alarms based on received information.
Insulation supervision for liquid medium SSIML
Insulation supervision for liquid medium (SSIML) is used for
monitoring the transformer condition. Binary information based
on the oil level in the transformer is used as input signals to the
function. In addition, the function generates alarms based on
received information.
Circuit breaker condition monitoring SSCBR
The circuit breaker condition monitoring function (SSCBR) is
used to monitor different parameters of the breaker condition.
The breaker requires maintenance when the number of
operations reaches a predefined value. For a proper functioning
of the circuit breaker, it is essential to monitor the circuit
breaker operation, spring charge indication or breaker wear,
travel time, number of operation cycles and estimate the
accumulated energy during arcing periods.
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 in km, miles or % of line length. 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.
1MRK 506 372-BEN -
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