For the integrated energy system composed of photovoltaic power generation

energy storage battery storage and discharge

and coal-fired heating boiler and cogeneration

the power and heat power systems operate in isolation. To analyze the relationship between the information interaction and economic coordination and dispatch of the integrated energy system

by using the J.F.Benders mixed variable target decomposition method

the physical model of the cogeneration photovoltaic storage thermal power system is decomposed according to the main thermal system and the power subsystem. The information interaction between the sub-objectives is analyzed by the objective function and the system boundary conditions

and the mathematical model of the coordinated scheduling operation of photoelectric consumption and storage and cogeneration is obtained. The protection information is isolated and redirected

and the multi-dimensional variable problem of mixed integer programming is iteratively calculated by Gurobi solver. Based on the case of the integrated energy system

three operating conditions under different load requirements of power and heat are analyzed

and it is found that

the economic benefits of the thermal power operation system are synergistic and complementary

and the information interaction expands the space for photovoltaic consumption. The net load of the system reduces by 13.63% on average

the interactive power loss decreases by 9.480 7 million yuan/year

and the energy utilization efficiency rises by 4.48 percentage points

which shows that this model can serve the economic coordination and scheduling optimization and energy efficiency improvement of the integrated energy system.