Event recorder DRPRDRE
Quick, complete and reliable information about
disturbances in the primary and/or in the
secondary system is vital, for example, time-
tagged events logged during disturbances. This
information is used for different purposes in
the short term (for example corrective actions)
and in the long term (for example functional
analysis).
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
three 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.
Measured value expander block
MVEXP
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 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.
Breaker protection REQ650 ANSI
1MRK 505 269-BUS -
Product version: 1.1
Issued: April 2011
ABB
25
