Disturbance Recorder - ABB Relion Technical Manual

Section 14
Monitoring
14.9
14.9.1
14.9.2
14.9.3
14.9.4
14.9.5
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Disturbance recorder

Functionality
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 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
9,9 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.
Function block
The Disturbance recorder has no function block of it's own.
Signals
See Disturbance report for input and output signals.
Settings
See Disturbance report for settings.
Operation principle
Disturbance recording is based on the acquisition of binary and analog signals. The binary
signals can be either true binary input signals or internal logical signals generated by the
functions in the IED. The analog signals to be recorded are input channels from the
Transformer Input Module (TRM) through the Signal Matrix Analog Input (SMAI) and
possible summation (Sum3Ph) function blocks and some internally derived analog
signals.
1MRK 502 048-UUS A
Technical manual