Abstract: With the continuous advancement of the construction of a new power system with energy as the main body, new power services such as distributed energy, source network load storage, etc. have emerged.How to reasonably allocate resources and meet differentiated needs of murtiple businesses is the focus of attention in power grid company for the moment.In this paper, a mixed integer linear programming 5G core network slicing model was constructed, and the importance of the slicing node factors of topology characteristics, resource utilization and delay time was ranked based on the VIKOR method.In the slice link configuration stage, the physical path of the slice link was obtained using the shortest path algorithm.The simulation results show that the scheme and algorithm proposed in this paper can ensure a the end-to-end latency requirements of services and high success rate of slice configuration, which can meet the security requirements of 5G core network slices.