Research on collaborative low-carbon operation method of distribution network multi-balance zone based on shared energy storage and electricity-carbon coupling
The electric balance zones (EBZ) on the distribution network side can effectively aggregate distributed energy within the EBZ through advanced communication and control technologies, providing an effective path for achieving low-carbon development. To promote the positive role of EBZ in carbon reduction, a multi-EBZ and distribution network collaborative optimization framework is proposed. The carbon and electrical models of multiple elements within the EBZ is analyzed, and the modeling is refined based on the characteristics of energy storage charging and discharging to characterize the carbon emission characteristics of shared energy storage. Based on the time-of-use electricity price, a multi-EBZ electricity carbon coupling demand response model for the distribution network is proposed to achieve differentiated multi-EBZ internal load refinement and "electricity carbon" linkage on the distribution network side. A multi-EBZ collaborative low-carbon optimization scheduling model for distribution network based on shared energy storage and electricity carbon coupling is established. The upper level distribution network releases electricity-carbon coupling electricity prices, and the lower level demand side EBZ generates effective emission reduction plans, thereby achieving the coordinated optimization of "electricity-carbon" in the source-grid-load-storage on the distribution network side, and realizing the overall low-carbon economic operation of the distribution network. The scientificity and effectiveness of the proposed method in improving the low-carbon and new energy consumption capacity of the distribution network are verified through an example of distribution network in a certain region of Zhejiang.