Fault early warning and accurate positioning method based on intelligent fusion circuit breaker

The invention discloses a fault early warning and accurate positioning method based on an intelligent fusion circuit breaker, and belongs to the technical field of circuit fault detection, and the method comprises the steps: a data collection unit obtains response data in different line discharge states, and obtains an average value and a standard deviation of traveling wave characteristic values in different discharge states based on the response data; determining normal membership functions of different discharge states according to the discharge degree fuzzy set on the basis of the average value and the standard deviation of the acquired traveling wave characteristic values; according to different discharge states and insulation damage accumulation concepts, constructing a discharge state similar matrix; obtaining a calculation value fuzzy subset A'based on normal membership functions of different discharge states, and obtaining an experience value fuzzy subset A based on upper triangular elements of the d