The invention belongs to the field of power
system engineering, and discloses a power distribution
automation terminal diagnosis method and
system based on multi-source wave recording
feature fusion, and the method comprises the steps: obtaining the electric quantity data and equipment operation state data collected by a power distribution
automation terminal; performing adaptive
decomposition on the electrical quantity data by using a
variational mode decomposition algorithm to obtain an intrinsic mode function; constructing a deep residual
network model, carrying out fusion analysis on the time-
frequency domain features of the intrinsic mode function, and generating a fault
feature vector; establishing a multi-dimensional evaluation matrix based on the fault feature vectors, and integrating a plurality of indexes to output fault types and credibility scores; according to the fault type and the credibility
score, generating a fault isolation strategy based on a Petri
network model; and executing a dynamically adjusted self-adaptive self-healing
control algorithm. According to the method, complex and changeable fault
modes can be effectively identified, a complete collaborative
verification mechanism is formed, seamless connection from fault diagnosis to self-healing control is realized, and the operation reliability of the power distribution network is remarkably improved.