Siemens 6MD85, Manual

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[dwsigrar-070813-01, 1, en_US]
Figure 3-37 Example of a Fault Recording
With the
Fault recording
parameter, you specify the start criterion of the recording.
You can set the following values:
•
with pickup
:
The fault recording records the complete fault until dropout. The resulting pickup signals of all function
groups are taken into account.
•
user-defined
:
With this setting value, you can individually specify the recording criterion for the fault recording in
DIGSI 5. Function-specific recording criteria can be realized in this way.
If a recording criterion reoccurs during the pickup time and post-trigger time, the recording which is currently
active is extended to include a new post-trigger time.
For a sampling frequency of 8 kHz and 24 analog channels to be recorded, the duration of one individual fault
recording can be up to 20 s.
The maximum record duration can be limited by the
Maximum record time
parameter.
In addition to starting the fault recording via the pickup, the following alternatives are possible:
•
Externally via binary input signal
>External start
(for example, from an external protection device
without fault recording by an object transferred via a GOOSE message)
•
By way of a configurable input signal
>Manual start
, you can start fault records with a configurable
length (parameter
Manual record time
).
•
With DIGSI 5, you can start test fault records with a fixed length of 1 s.
•
With a command from a central device via an existing communication connection (IEC 61850,
IEC 60870-5-103)
i i
NOTE
If a pickup signal is present continuously, the fault record is closed after the
Maximum record time
expires and the fault recording is not restarted!
Saving the Recording
Not every fault recording that is started actually needs to be saved. With the
Storage
parameter, you specify
whether or not you want to save the fault recording that has started. You can also save only fault data for
which the pickup of a protection function also caused a tripping. With this setting, faults beyond the self-
protection range will not lead to replacing fault recordings that have already been saved.
System Functions
3.4 Fault Recording
92 SIPROTEC 5, High-Voltage Bay Controller, Manual
C53000-G5040-C015-9, Edition 11.2017