Electromagnetic interference simulation test system and method

The invention discloses an electromagnetic interference simulation test system which comprises a signal generation unit, a control device, a signal processing unit, a metal box body, an internal powersupply, a high-voltage power supply and a monitoring unit. The signal generation unit is connected with the control device; a shell of the metal box body is grounded, and a signal processing unit isarranged in the metal box body; the signal processing unit is connected with the signal generation unit; the signal processing unit and the internal power supply are arranged on a metal plate; the metal plate is grounded, and the signal generation unit, the high-voltage power supply and the monitoring unit are arranged outside the metal plate; during testing, a to-be-tested high-voltage componentis placed on the metal plate, and the internal power supply and the monitoring unit are connected with the to-be-tested high-voltage component; and the signal processing unit is connected with the to-be-tested high-voltage comp