a circuit system cascade failure propagation path determination method based on current redistribution

The invention provides a circuit system cascade failure propagation path determination method based on current redistribution. The method comprises the steps of S1, structure and function analysis; S2, constructing a circuit system network; S3, calculating the initial current of each component, and determining the self capacity; S4, initial failure injection is carried out, and a circuit network is reconstructed; S5, calculating a current redistribution factor; S6, calculating the component current after redistribution; S7, judging whether the component is invalid or not, if the component is invalid, updating the circuit network, and returning to the step 5; And S8, determining a cascade failure propagation path. Based on the current redistribution principle, the failure behavior of the circuit system can be analyzed from the perspective of the system by combining the circuit network structure and internal component parameters of the circuit network structure, and the obtained circuitsystem cascade failure pr