Heat source heat pump system for large-temperature-difference long-distance heat supply

The invention discloses a heat source heat pump system for large-temperature-difference long-distance heat supply, which belongs to the field of waste heat recycling and comprises an organic Rankine cycle device, a vapor compression heat pump, an intermediate heat exchanger, a primary heat supply network flow path, a medium-temperature heat source flow path and a power device. The organic Rankine cycle device drives the steam compression type heat pump to operate through medium-grade heat supplied by a medium-temperature heat source and heats incoming water of a primary heat supply network through waste heat. The power device supplements the driving force of the vapor compression type heat pump; the intermediate heat exchanger directly heats incoming water of a primary heat supply network by utilizing medium-grade heat supplied by a medium-temperature heat source; the steam compression type heat pump absorbs medium-grade heat supplied by the medium-temperature heat source to generate high-grade heat so as to