Application; Settings - ABB Relion SMU615 Technical Manual

Section 7
Measurement functions
7.2.4
7.2.5
208
The IP number of the merging unit and the content of the Bay name
parameter are both included in the COMTRADE configuration file for
identification purposes.

Application

The disturbance recorder is used for post-fault analysis and for verifying the correct
operation of merging units and circuit breakers. It can record both analog and binary
signal information. The analog inputs are recorded as instantaneous values and
converted to primary peak value units when the merging unit converts the recordings
to the COMTRADE format.
COMTRADE is the general standard format used in storing
disturbance recordings.
The binary channels are sampled once per task execution of the disturbance recorder.
The task execution interval for the disturbance recorder is the same as for the
protection functions. During the COMTRADE conversion, the digital status values
are repeated so that the sampling frequencies of the analog and binary channels
correspond to each other. This is required by the COMTRADE standard.
The disturbance recorder follows the 1999 version of the
COMTRADE standard and uses the binary data file format.

Settings

Table 250: RDRE Non-group general settings
Parameter Values (Range) Unit
Operation 1=on
5=off
Record length 10...500
Pre-trg length 0...100
Operation 1=Saturation
mode 2=Overwrite
Exclusion time 0...1 000 000
Table continues on next page
Step
1
fundamental 1
cycles
% 1
1
ms 1
1MRS758407 B
Default Description
1=on Disturbance
recorder on/off
50 Size of the
recording in
fundamental
cycles
50 Length of the
recording
preceding the
triggering
1 Operation
mode of the
recorder
0 The time
during which
triggerings of
same type are
ignored
SMU615
Technical Manual