For multiple power supply transformation heating units and multiple heating users at plant level

the economic optimal dispatching of multi-unit heating at plant level with auto generation control(AGC) priority is proposed. Firstly

based on the energy consumption model of the unit and the constraints of heating and steam extraction to ensure AGC priority

the optimization objective function of heating economic dispatching is established. Then

the improved particle swarm optimization algorithm is used to optimize the objective function in the feasible solution interval of unit steam extraction and heating. Finally

this method is verified by taking the actual operation results of the power plant as an example. The research shows that

the proposed optimal dispatching scheme has lower average standard coal consumption rate of power generation and average standard coal consumption rate of power supply than the actual operation scheme of the power plant

which can ensure the energy-saving

efficient and optimal heating while giving priority to the power load.