Optimized Scheduling Strategy of Multi-Micro-Grid Integrated Energy System Considering the Efficient Utilization of Energy Cascade

The implementation of the two-carbon target of “carbon peak” and “carbon neutrality”. The increase of the comprehensive energy micro-grid will form a micro-grid cluster, namely the multi-micro-grid integrated energy system. Compared with the single integrated energy system can greatly improve the energy cost of the grid. How to further improve the overall energy use efficiency is still a key point of research. In this paper, an optimal scheduling model is established for the multi-micro grid integrated energy system including electric energy interaction and considering the efficient utilization of energy cascade. Firstly, the architecture and the energy quality coefficient method of the multi-micro grid integrated energy system are detailed, and the differences between the efficiency calculation method and the thermal efficiency calculation method are compared in detail. Subsequently, the optimal scheduling model of multi-micro grid integrated energy system with economy and efficiency is constructed. Matalb and Yalmip are used for optimization modeling, and Gurobi solver is used to solve the problem, which effectively avoids the problem of too long calculation time of heuristic algorithm. The rationality and effectiveness of the proposed scheme are demonstrated through example analysis, which not only greatly improves the energy efficiency, but also ensures the high economy, making the operation of the multi-micro grid integrated energy system more in line with the requirements of the two-carbon target.