Method and system for identifying operation state of circuit breaker of unattended traction substation

The invention discloses a circuit breaker operation state identification method and system for an unattended traction substation, and relates to the field of substation fault diagnosis, and the method comprises the steps: determining a training sample feature data set and a to-be-determined sample feature data set; determining a prior overlapping volume matrix according to the training sample feature data set; determining a posterior overlapping volume matrix according to the to-be-determined sample feature data set; based on the prior overlapping volume matrix and the posterior overlapping volume matrix, determining an attribution degree vector of the to-be-determined sample feature data set; determining the purity of the attribution degree vector according to the attribution degree vector; determining a weight coefficient of the attribution degree vector according to the attribution degree vector purity; and according to the weight coefficient, determining a discrimination vector of category identification