Edge Computing-Based Cyber-Physical Interdependent Power Restoration of Active Distribution Networks

The digitalization of distribution networks intensifies the coupling between cyber and physical networks. Edge computing devices offer significant flexibility for organizing distributed energy resources and enabling multi-area coordinated control, demonstrating considerable potential to enhance the power restoration capability of active distribution networks. This paper proposes a power restoration method based on edge computing technology, which accounts for the interdependencies between cyber and physical systems during the restoration process. For the cyber system, a self-organization method for edge computing devices is proposed to establish a dual-layer emergency communication network, supporting strategy generation for power restoration. For the physical system, an ADMM-based solving method is developed to achieve rapid solution of the restoration problem in a distributed manner by pre-fixing binary variables. Case studies are conducted on the IEEE 123-node test system and the Taiwan 94-node test system, highlighting the advantages of the proposed method in terms of restoration speed and effectiveness.