High-power grid simulation device suitable for new energy converter experiment

The invention relates to a high-power grid simulation device suitable for a new energy converter experiment. The device comprises a grid analog source (2) and tested product interfaces (4) and (5); the device further comprises a connection line, and a backup PV source (photovoltaic array analog source) (3), wherein the connection line is provided with circuit breakers and is connected with the alternating-current ends of the tested product interfaces and an incoming line (1). When a photovoltaic inverter temperature rise experiment and an MTTP experiment or a wind power converter temperature rise experiment are to be performed, the circuit breakers on the connection line are turned on, and the experiments can be performed under a condition that the grid side of the grid analog source (2) is in a standby state or the entire grid analog source is turned off, and therefore, the reliability and stability of equipment can be improved, and the service life of the grid analog source (2) whichis the core part of the