Event Log; Disturbance Report; Circuit-Breaker Monitoring; Trip-Circuit Supervision - ABB Relion 630 Series RET630 Product Manual

ABB
Transformer Protection and Control
RET630
Product version: 1.1

9. 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.

10. Disturbance report

The disturbance report includes information
collected during the fault situation. The
report includes general information such as
recording time, pre-fault time and post fault
time. Further, the report includes pre-fault
magnitude, pre-fault angle, fault magnitude
and fault angle trip values. By default, the
disturbance reports are stored in a non-
volatile memory. The numerical disturbance
report can be accessed via the local front
panel user interface. A more comprehensive
disturbance report with waveforms is
available using PCM600.
11. Circuit-breaker
monitoring
The condition monitoring functions of the
IED constantly monitors the performance and
the condition of the circuit breaker. The
monitoring comprises the spring charging
time, SF6 gas pressure, the travel-time,
operation counter, accumulated energy
calculator, circuit-breaker life estimator and
the inactivity time of the circuit breaker.
The monitoring functions provide operational
circuit breaker history data, which can be
used for scheduling preventive circuit breaker
maintenance.
12. Trip-circuit
supervision
The trip-circuit supervision continuously
monitors the availability and operability of
the trip circuit. It provides open-circuit
monitoring both when the circuit breaker is
in its closed and in its open position. It also
detects loss of circuit-breaker control voltage.

13. Self-supervision

The IED's built-in self-supervision system
continuously monitors the state of the IED
hardware and the operation of the IED
software. Any fault or malfunction detected is
used for alerting the operator.
Self-supervision events are saved into an
internal event list which can be accessed
locally via the user interface on the IED front
panel. The event list can also be accessed
using the web-browser based user interface
or PCM600.
1MRS756978 D
Issued: 2011-05-18
13