GIS circuit breaker mechanical characteristic curve similarity detection method and system

The invention relates to a GIS circuit breaker mechanical characteristic curve similarity detection method and system, and belongs to the technical field of GIS circuit breaker mechanical characteristic monitoring. The method comprises the steps that a curve similarity coefficient is output through matching of a standard curve and action data to be detected, if the curve similarity coefficient is larger than a detection threshold value, it is considered that the mechanical characteristics of the circuit breaker are normal, if the curve similarity coefficient is equal to the detection threshold value, it is considered that the mechanical characteristics of the circuit breaker have a deterioration trend, and if the curve similarity coefficient is smaller than the detection threshold value, it is considered that the mechanical characteristics of the circuit breaker have a deterioration trend. Mechanical characteristic faults of the circuit breaker are considered; the detection threshold is determined according t