Abstract
A transformer fault diagnosis method based on RIMER( belief rule-base inference methodology using the evidential reasoning approach) expert system is proposed to deal with fault coding loss and low accuracy in the three-ratio rule. The fault diagnosis method acquires the parameter of the belief rule bases from both three-ratio rule and training of the fault sample data, and then get the diagnosis result Based on the belief rule bases and evidence reasoning algorithm. The calculation speed of the method is fast. The simulation experiment indicates that the model improves the fault diagnosis accuracy rate, furthermore the distributed confidence result indicts the mixed fault more effective.
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