Multi-voltage level harmonic disturbance source generation?system

The utility model provides a multi-voltage level harmonic disturbance source generation?system. The interface device is connected in series with circuit breakers in serial connection on a power grid bus; the input end of a power quality disturbance generator is connected onto the power grid bus between the circuit breakers via a contactor; the output end of the power quality disturbance generator is provided with two output branches, each output branch is respectively connected with the interface device and the input ends of the transformer, and the contactors are connected in series onto the output branches respectively; and the output end of the transformer is provided with two output branches, and the output branches are connected with a test power bus. Compared with the prior art, the harmonic disturbance source generation?system provided by the utility model can output three standard?harmonic sources which have the harmonic times of 0 to 50, voltages/capacities of 10KV/2Mvar, 0.38KV/500Kvar and 0.69KV/500Kvar, and the maximum total?distortion rate of less than 20%.