Energy Coordination Strategy for the Park-Level Integrated Energy System

Integrated energy system (IES) represents a crucial avenue of research in the pursuit of energy conservation and carbon reduction, as it facilitates collaborative management and complementarity among multiple energy sources. This study integrates disparate energy networks within the park into a integrated energy system and formulates coordinated scheduling strategies for multiple energy outputs. Configure rooftop photovoltaic and energy conversion equipment in the system. The operation planning objective of the IES is minimizing annual average cost of the system, while taking into account carbon trading expenses and the advantages of substituting purchased electricity with new energy generation. By considering constraints such as supply-demand balance, energy trading, installation requirements for energy conversion equipment, and energy conversion relationships, a mixed integer linear programming (MILP) algorithm is employed to address the problem. This algorithm enables the determination of installation quantity and configuration capacity of distributed energy, energy trading schemes, and daily operation strategies for the system. The calculation results indicate that the addition of photovoltaic power generation units has a positive effect on reducing system carbon emissions and lowering carbon trading costs. Furthermore, energy conversion devices enhance system resilience by efficiently absorbing new energy generation during winter and summer, selling excess electricity to the grid during spring and autumn, and ensuring a stable supply of thermal energy and natural gas.