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Optimal Design of Park-Level Integrated Energy System Considering the Cost of Carbon Emissions

In the context of the “carbon peaking and carbon neutrality”, it has become a major trend to build an integrated energy system (IES) that takes into account the cost of carbon emissions. The paper introduces the power to gas (P2G) devices, the combined cold, heat and power units (CCHP), the gas boilers (GB) and electric chillers (EC) to form an IES to establish a low carbon integrated energy coupling station that is universally applicable to the park. The cost of installation, operation, energy purchase and end-of-year residual value of the system is taken as the economic cost of the system, and the conversion of CO2 emissions into economic benefits is included in the objective function. It also constrains the load demand situation, the cooperation of each unit in the park and the equipment output. Photovoltaic power (PV) stations are brought in to provide energy for the park and work with the grid's time-of-use tariff. Finally, different scenarios are set up to verify the effectiveness of the scheme, using a planned energy coupling station along the eastern part of China as an example.