Event And Fault Recorder; Event Recorder (“View Records” Menu) - GE MiCOM P40 Agile Technical Manual

Measurements and Recording
MiCOM P40 Agile P442, P444
1. MEASUREMENTS AND RECORDING
1.1 Introductions
The MiCOM P442 and P444 are equipped with integral measurements, event, fault and
disturbance recording facilities suitable for analysis of complex system disturbances.
The relay is flexible enough to allow for the programming of these facilities to specific user
application requirements and are discussed below.
1.2

Event and fault recorder

1.2.1 Event Recorder ("View records" menu)
The relay records and time tags up to 250 events and stores them in non-volatile (battery
backed up – installed behind the plastic cover in front panel of the relay)) memory. This
enables the system operator to establish the sequence of events that occurred within the
relay following a particular power system condition, switching sequence etc. When the
available space is exhausted, the oldest event is automatically overwritten by the new one
(First in first out).
The real time clock within the relay provides the time tag to each event, to a resolution of
1 ms.
The event records are available for viewing either via the frontplate LCD or remotely, via the
communications ports or via MiCOM S1 Agile with a PC (connected to the relay (event
extracted from relay & loaded in PC):
Local viewing on the LCD is achieved in the menu column entitled 'VIEW RECORDS'. This
column allows viewing of event, fault and maintenance records and is shown below:
VIEW RECORDS
LCD Reference
Select Event
Menu Cell Ref
Time & Date
Event Text
Event Value
Select Fault
Distance
Started Phase
Tripped phase
Overcurrent
Overcurrent
Neg Seq O/C
Neg Seq O/C
Broken conductor trip
Description
Setting range from 0 to 249.
This selects the required event record from the possible 250 that may be
stored. A value of 0 corresponds to the latest event and so on.
Latched alarm active, Latched alarm inactive, Self reset alarm active, Self
reset alarm inactive, Relay event, Opto-isolated input event, Protection
event, General event, Fault record event, Maintenance record event
Time & Date Stamp for the event given by the internal Real Time Clock
Up to 32 Character description of the Event (refer to following sections)
Up to 32 Bit Binary Flag or integer representative of the Event (refer to
following sections)
Setting range from 0 to 4.
This selects the required fault record from the possible 5 that may be
stored. A value of 0 corresponds to the latest fault and so on.
The following cells show all the fault flags, protection starts, protection trips,
fault location, measurements etc. associated with the fault, i.e. the
complete fault record.
Distance protection trip: Trip Z1 aided, Trip Z1X aided, Trip Z2 aided, Trip
Z3 aided, Trip Zp aided, Trip Zq aided, Trip Z5 aided,
A, B, C or N
A, B, C or N
Start I>1, Start I>2, Start I>3 or Start I>4
Trip I>1, Trip I>2, Trip I>3 or Trip I>4
Negative sequence Overcurrent: Start I2>1, Start I2>2, Start I2>3 or Start
I2>4
Negative sequence Overcurrent: Trip I2>1, Trip I2>2, Trip I2>3 or Trip I2>4
P44x/EN MR/Hb6
(MR) 7-5