Methods and systems of logging detected protection system related events
affecting a protection system are disclosed. A determination is made as
to whether a detected event itself or in combination with a previous
detected event provides information relating to both a protection
switching operation and a cause of the protection switching operation,
and if so, a further determination is made as to whether the information
relating to a protection switching operation indicates that the
protection switching operation has occurred. If both of these conditions
are satisfied, a log entry associated with the protection switching
operation, or possibly an alarm for the protection switching operation,
is recorded in an event log. In one embodiment, an event log entry is
created for a detected protection switching operation and then updated to
include information related to a subsequently detected event associated
with the protection switching operation.