Multi-layer online monitoring system and method for transformer substation

The invention relates to a multi-layer online monitoring system and method for a transformer substation. A process layer monitoring unit is connected with a network A and a network B of a process layer of a transformer substation, a station control layer monitoring unit is connected with a network A and a network B of a station control layer of the transformer substation, a dispatching data network communication link monitoring unit is connected with a dispatching data network switch of the transformer substation, and the process layer monitoring unit, the station control layer monitoring unitand the dispatching data network communication link monitoring unit transmit monitored message information to a data recording unit; an analysis and verification unit is used for reading data of a data recording unit, judging whether each message meets a corresponding message standard or not and transmitting an analysis conclusion to the data recording unit; and a display unit is used for readingthe real-time refreshing