Dynamic Characterization of Multi-terminal AC-DC Hybrid Systems

The application proportion of multi-terminal AC/DC hybrid distribution system is increasing, in order to characterize its operation status and trajectory, and determine whether the system can maintain stable and safe operation, this paper focuses on a typical multi-terminal AC/DC hybrid distribution system, and firstly establishes its differential-algebraic equations through mathematical-physical methods, and then establishes Monte Carlo time-domain simulation model of the system according to its topology, and obtains the change curves of each key state variable during its operation. After that, a Monte Carlo time-domain simulation model of the system is built based on its topology to obtain the change curves of each key state variable during its operation, and finally, a reachability analysis method is used on the basis of the differential algebraic equations to further characterize its dynamic operation, and a comparison is made with the Monte Carlo time-domain simulation method to validate the validity of the analysis method.