Patent ID: 9411705
Filing Date: 2016-08-09
CPC Classification: G06F,H01H

Claim Text:
1. An event communication apparatus for a protection relay which transmits event data to a supervisory monitor, the event communication apparatus comprising: a shared memory configured to store and provide data to share; a main processing module configured to, whenever an event occurs, update previous event data to a status information of the event and a status occurrence time information as new event data, and write the updated event data into the shared memory; and a communication module configured to periodically read status information from the shared memory, compare the read status information with pre-stored previous status information to determine whether there is a status change, determine occurrence of a new event when there is the status change, and transmit corresponding event data to the supervisory monitor immediately when the new event occurs, wherein a priority of an operation of writing event data in the shared memory whenever the event data occurs is set higher than priorities of other operations for the main processing module, and wherein a priority of an operation of periodically reading the shared memory is set higher than priorities of other operations for the communication module.