Protection system suitable for simulation of power electronic devices

The present invention relates to the field of power systems, in particular to a protection system suitable for simulation of power electronic devices. The system comprising: a main protection subsystem, redundancy and backup protection subsystem subsystem; main protection subsystems are connected to the emulator and the digital interface circuit; protected information between the master subsystem and the redundant protection subsystem exchange, said backup protection subsystem to exchange information with the interface circuit, the interface circuit with the power electronic device is connected. Hybrid simulation system of the present invention provides hardware and software resources on the interface to achieve overvoltage protection, in order to achieve the reliability of the rational use of resources, to enhance the simulation, and the solution can easily lead to damage to the equipment simulation, simulation reliability is not high The problem.