ABB RELION 630 Series Technical Manual page 90

Section 3
Basic functions
84
and so on. This information can also be used when planning for and designing new
installations, that is, a disturbance recording can be a part of functional analysis.
Disturbance report DRRDRE is always included in the IED. It acquires sampled data
of all the selected analog and binary signals connected to the function blocks.
• Maximum 20 external analog signals
• 20 internal derived analog signals
• 64 binary signals
Disturbance report function is a common name for several functions, such as
indications, event recorder, event list, trip value recorder and disturbance recorder.
Disturbance report function is characterized by great flexibility as far as
configuration, starting conditions, recording times, and large storage capacity are
concerned. Thus, disturbance report is not dependent on the operation of protective
functions, and it can record disturbances that are not discovered by protective
functions. Disturbance report can be used as an advanced stand-alone disturbance
recorder.
Every disturbance report recording is saved in the IED. The same applies to all events
which are continuously saved in a ring-buffer. LHMI can be used to get information
about the recordings, and the disturbance report files can be uploaded in the PCM600
using the disturbance handling tool, for report reading or further analysis (using
WaveWin, that can be found on the PCM600 installation CD). The user can also
upload disturbance report files using MMS (over IEC 61850-8-1) clients.
If the IED is connected to a station bus (IEC 61850-8-1), the disturbance recorder
(record made and fault number) and the fault locator information are available as
GOOSE or report control data.
The analog output data from the load shedding function block for example, sheddable
load, load mismatch and so on, is connected to the A4ARDR function block for
recording the changes in the output data during a specified time period. This recording
is initaiated by a binary trigger connected to one of the BxRBDR components. A pre-
trigger time (max value = 3 s) and a post-trigger time (max value = 10 s) can be
configured and the changes during the configured period of time is recorded. These
changes can be viewed using the Disturbance Recording Viewing tool. Apart from
generating the disturbance records , BxRBDR can be used for creating process events
and for configuring the start and trip LED on the LHMI overlay. Binary output from
the load shedding function block can be connected to the BxRBDR block to generate
the process events.
Presently the disturbance recorder does not support calculated analog
values or sample values from an application thread that has a SMAI
function configured for 80 samples/cycle.
1MRS757256 F
PML630/Compact Load-Shedding Solution
Technical Manual