Disturbance Recorder; Event Log - ABB RET630 Product Manual

ABB
Transformer Protection and Control
RET630
Product version: 1.0
voltages, positive and negative sequence
voltages and the residual voltage. In addition,
the IED monitors active, reactive and
apparent power, the power factor, power
demand value over a user-selectable pre-set
time frame as well as cumulative active and
reactive energy of both directions.
System frequency and the temperature of the
transformer are also calculated. Cumulative
and averaging calculations utilize the non-
volatile memory available in the IED.
Calculated values are also obtained from the
protection and condition monitoring
functions of the IED.
The values measured are accessed locally via
the front-panel user interface of the IED or
remotely via the communication interface of
the IED. The values are also accessed locally
or remotely using the web-browser based
user interface.

7. Disturbance recorder

The IED is provided with a disturbance
recorder featuring up to 40 analog and 64
binary signal channels. The analog channels
can be set to record the waveform of the
currents and voltage measured. The analog
channels can be set to trigger the recording
when the measured value falls below or
exceeds the set values. The binary signal
channels can be set to start a recording on
the rising or the falling edge of the binary
signal. The binary channels are set to record
external or internal IED signals, for example
the start or operate signals of the protection
functions, or external blocking or control
signals. Binary IED signals such as a
protection start or trip signal, or an external
IED control signal over a binary input can be
set to trigger the recording. In addition, the
disturbance recorder settings include pre and
post triggering times.
The disturbance recorder can store up to 100
recordings. The number of recordings may
vary depending on the length of the
recording and the number of signals
included. The disturbance recorder controls
the Start and Trip LEDs on the front-panel
user interface. The operation of the LEDs is
fully configurable enabling activation when
one or several criteria, i.e. protection function
starting or tripping, are fulfilled.
The recorded information is stored in a non-
volatile memory and can be uploaded for
subsequent fault analysis.

8. Event log

The IED features an event log which enables
logging of event information. The event log
can be configured to log information
according to user pre-defined criteria
including IED signals. To collect sequence-of-
events (SoE) information, the IED
incorporates a non-volatile memory with a
capacity of storing 1000 events with
associated time stamps and user definable
event texts. The non-volatile memory retains
its data also in case the IED temporarily loses
its auxiliary supply. The event log facilitates
detailed pre- and post-fault analyses of faults
and disturbances.
The SoE information can be accessed locally
via the user interface on the IED front panel
or remotely via the communication interface
of the IED. The information can further be
accessed, either locally or remotely, using the
web-browser based user interface.
The logging of communication events is
determined by the used communication
protocol and the communication engineering.
The communication events are automatically
sent to station automation and SCADA
systems once the required communication
engineering has been done.
1MRS756788 A
Issued: 15.09.2009
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