A Two‐Stage Emergency Reconfiguration Strategy for Port Cyber‐Physical Systems During Disasters Considering the Marginal Value Quantification of Multi‐Service Information Flows

ABSTRACT With the advancement of digitalization, the port is increasingly dependent on cyber systems to coordinate their multiple service operations, gradually evolving into a port cyber‐physical system (PCPS). The deepening cyber‐physical integration enhances the vulnerability of ports to extreme disasters. In the event of a cyber‐physical failure, the coordinated consideration of information flow restoration and power distribution system reconfiguration is of significant value for maximizing load restoration. To address this challenge, this paper proposes a method for quantifying the marginal value of multi‐service information flows to objectively assess the relative importance of each service information flow, with the aim of maximizing the load recovery effect in the event of a disaster. Initially, a coupled cyber‐physical collaborative restoration model for the port is developed based on the multi‐commodity flow framework. Subsequently, the marginal value of each information flow is quantified by the Shapley value approach, with which the coupled model is decoupled and solved by a two‐stage restoration strategy. Finally, within the proposed cyber‐physical collaborative restoration model, the case study results validate the effectiveness of the two‐stage restoration strategy in terms of both load recovery and solution time.