Energy feedback type distributed photovoltaic power inverter integrated test system

Provided is an energy feedback type distributed photovoltaic power inverter integrated test system. The energy feedback type distributed photovoltaic power inverter integrated test system comprises a power electronic island and stimulated power grid alternating-current source, a wave recorder, a power analyzer and a client notebook computer, wherein the power electronic island and stimulated power grid alternating-current source is composed of a hardware system and two independent control systems, provides a power electronic island load simulation device for the energy feedback type distributed photovoltaic power inverter integrated test system, is equivalent to an RLC load, is used for replacing the traditional RLC load, can serve as an alternating-current source stimulated power grid, and have both the island testing function and the power grid characteristic simulation function. According to a built island detection and power grid simulation integrated device, energy feedback is achieved, energy consumption during a test is reduced, the size and the weight of the island detection and power grid simulation integrated device are reduced, the site test capacity is achieved, active power and reactive power output by a photovoltaic inverter can be detected in real time, the load resistance needing to be simulated, the load inductance needing to be simulated and the load capacitance needing to be simulated are calculated in real time, and the island detection test can be carried out on the photovoltaic power grid-connection site.