The invention provides a multi-
source data grid fault identification method, and relates to the field of dispatching
automation of
electric power systems. When an electric
system is dispatched, the
advantage that diagnosis is conducted by only depending on protecting action information is not beneficial for the judgment and immediate
processing of an accident. The multi-
source data grid fault identification method includes the following steps of setting up a parameter, collecting grid operation information in real time, sorting out
grid fault reports when receiving action information of a
relay protection device, organizing action reports according to a protection device when a real fault
signal is detected, taking the time scale of the earliest received protection action as the zero-time of the action report, if other protection action signals belong to the same device and the
time gap between the action time and the zero-time is less than a threshold value, arranging the protection action signals to be in the same action report, if received scattered wave records belong to the same device and the
time gap is less than the threshold value, arranging the received scattered wave records to be in the same report. According to the technical scheme, after a fault occurs in the electrical
system, the real grid fault can be quickly and accurately identified, and a clear grid fault report can be organized.