NETWORK OVERSEEING DEVICE AND NETWORK OVERSEEING METHOD

摘要

A network monitoring apparatus includes: a monitor unit monitoring data transmitted in a network monitoring and controlling an electric power system of a transformer substation; a system fault determination database representing a correspondence between a fault in the electric power system and a type of data transmitted in the network; a calculation unit calculating a data amount monitored by the monitor unit; a first determination unit determining whether or not the data amount is greater than a threshold value; a second determination unit determining, when the monitored transmission amount is greater than the threshold value, a presence/absence of an occurrence of system fault based on the system fault determination database and a type of the monitored data; and a stop control unit stopping, when the second determination unit determines that the system fault occurs, the determination carried out in the first determination unit.