In order to evaluate the condition of the high-voltage circuit breaker operating mechanism, we proposed a method for evaluating the state of high-voltage circuit breaker operating mechanism based on adaptive neural fuzzy inference system (ANFIS). On the basis of testing and analyzing the operating characteristics of a large number of high- voltage circuit breaker operating mechanism, we studied the correlation between the tripping/closing coil current curve, contact travel-time curve and the state of the mechanism. Based on the tripping/closing coil current curve and the contact travel-time curve of the operating mechanism, two kinds of characteristics were combined to evaluate the operating status of the operating mechanism through the establishment of multi-level hierarchical ANFIS model. The results show that, combining the operation mechanism of coil current curve with the contact travel-time curve can accurately reflect the operation status of the operating mechanism. The model established in this paper can effectively evaluate the operation status of the circuit breaker operating mechanism, which has important guiding significance for the prediction and prevention of failure, reasonable arrangement of the maintenance plan.
KEY WORDS :ANFIS;operating mechanism of circuit breaker;state evaluation;multi-level hierarchical ANFIS structure;coil current curve;contact travel-time curve;
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