Deep waste heat utilization heat supply system for solving thermodynamic equilibrium of complex heat supply network

The invention discloses a deep waste heat utilization heat supply system for solving thermodynamic equilibrium of a complex heat supply network, which comprises a two-stage compression type heat pump unit, a radiator area heat supply network circulating water system, a geothermal area heat supply network circulating water system and a primary network circulating water system. Decoupling operation of heat users at different water supply temperatures is achieved, and the purpose of partition temperature balance control is achieved. The primary network water supply is utilized in a gradient mode, radiator user heat supply network circulating water is firstly heated according to the water supply temperature requirement, then geothermal user heat supply network circulating water is heated, the water supply temperature of the geothermal side is further reduced in a mixed water heat supply mode, and a two-stage compression type heat pump is combined to extract primary network return water waste heat to heat the radi