Objective To address the threats of cyberattacks on energy systems during ship operations, this paper proposes a distributed resilient energy management strategy for ship-integrated energy systems.

Method First, anenergy management model that simultaneously considered both economic and environmental benefits wasconstructed based on sailing conditions, and a fully distributed energy management strategy was developed using thealternating direction method of multipliers (ADMM). Next, considering that the communication network may switch between connected and disconnected states under attacks, the optimality and convergence of the proposed strategy were analyzed theoretically. Furthermore, detection and isolation strategies for abnormal energy device nodes were designed to address both non-colluding and colluding attacks. Finally, the ship-integrated energy system of a 64-node cruise ship operating on the Singapore-Penang route was used as a case study to verify the effectiveness of the proposed strategy.

Results Simulation results indicated that, under the influence of attacks on shipboard communication networks and energy device nodes, the proposed distributed resilient energy management strategy led to marginal cost increases of less than 2.70% for electrical energy and 0.50% for thermal energy.

Conclusion The proposed method significantly enhances the reliability of ship-integrated energy systems and the safety of long-distance ship operations.