Digital electromagnetic transient simulation system and method for flexible direct current transmission project

The invention discloses a digital electromagnetic transient simulation system and method for a flexible direct current transmission project. The system comprises a flexible direct current primary system model, a flexible direct current control protection digital model and a signal interaction interface, wherein the flexible direct current primary system model and the flexible direct current control protection digital model realize variable interaction through the signal interaction interface; the flexible direct current primary system model is used for simulating actual flexible direct current power transmission project primary equipment, and one power electronic switch is used in an energy consumption device and a direct current circuit breaker in the flexible direct current primary system model to simulate an actual power electronic switch formed by connecting a plurality of power electronic switches in series and parallel. Wherein the on-resistance and forward voltage drop parameters of the power electroni