Analysis of Cascading Failures of Ship's Integrated Power DC Area Distribution System

Aiming at the problem of cascading failures in the DC distribution area of the ship integrated power system, a probability analysis method based on Markov process is used to construct the space state model of the DC distribution system, generate the full state space of the system, and analyze the probability of cascading failures in the system.. Firstly, the theory and simulation analysis of the mechanism of the cascading failure of the ship's power system are carried out. On this basis, according to the structure of the DC distribution area under the working condition of a single inverter, a risk assessment model of system cascading failure is constructed, and the risk index of failure is obtained. Finally, through example verification, the development path of cascading failures is obtained, the probability of cascading failures is calculated, and the key lines in the system are found, which is convenient for the analysis of cascading failures under more complex working conditions, and improves the vitality of ship navigation.