Low Carbon Economic Optimization Dispatching of Medium and Low Voltage Distribution Systems Based on Carbon Emission Flow

The low-carbon and flexible characteristics of large-scale distributed energy resources will provide new opportunities for interactive support in the medium and low voltage distribution systems. Currently research on low-carbon dispatching in distribution systems mainly focuses on single voltage levels, without considering the interactive support ability between cross voltage levels. Therefore, this paper proposes a low-carbon optimization dispatching method for the medium and low voltage distribution systems based on carbon emissions. This method first equates the low voltage station area to a virtual battery, and introduce carbon emission flow theory to calculate the carbon emission intensity of virtual battery Secondly, a two-layer low-carbon dispatching model for the medium and low voltage distribution systems is constructed and solved by using a alternating direction method of multiplies; Finally, an improved the medium and low voltage distribution systems is applied for simulation verification, and the results show that the proposed method can enhance the interactive support ability of the medium and low voltage systems and reduce system operating costs and carbon emissions.