Multifunction simulation power source used for distributed generation grid connection detection

The invention discloses a multifunction simulation power source used for distributed generation grid connection detection. The multifunction simulation power source is characterized by comprising a photovoltaic array electricity generation character analog module and a fan/micro-gas turbine electricity generation character analog module, wherein the photovoltaic array electricity generation character analog module comprises a rectifying circuit connected with a mains supply, a first DC (direct current)-DC converter connected with the output end of the rectifying circuit and used for providing power for direct current detection equipment, a first DSP (Digital Signal Processor) control circuit and a first human-computer interface connected with the first DSP control circuit; the fan/micro-gas turbine electricity generation character analog module comprises a DC-AC (alternating current) inverter circuit connected with the output end of the first DC-DC converter and used for providing power for alternating current detection equipment, a second DSP control circuit and a second human-computer interface connected with the second DSP control circuit. The simulation power source is capable of simulating the photovoltaic array electricity generation character, the fan electricity generation character and the micro-gas turbine electricity generation character and has the alternating current and direct current output characters.