Power distribution network system based on single-conductor alternating current and direct current hybrid technology

The invention discloses a power distribution network system based on single-conductor alternating current and direct current hybrid technology. The power distribution network system comprises a first alternating current source and a direct current source, both the first alternating current source and the direct current source are connected with a first Z-type transformer, the first Z-type transformer is connected with a second Z-type transformer through a line, the second Z-type transformer is connected with a boost chopper circuit and a second alternating current source, a first load is connected between the first alternating current source and the first Z-type transformer, and a second load is connected between the second alternating current source and the second Z-type transformer. By the aid of the power distribution network, core saturation is avoided through the Z-type transformers. An alternating current and direct current power distribution network with the Z-type transformers can integrate alternating current and direct current without serious waveform distortion.