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Cyber-Resilient Self-Triggered Distributed Control of Networked Microgrids Against Multi-Layer DoS Attacks

Networked microgrids with high penetration of distributed generators have ubiquitous remote information exchange, which may be exposed to various cyber security threats. This paper, for the first time, addresses a consensus problem in terms of frequency synchronisation in networked microgrids subject to multi-layer denial of service (DoS) attacks, which could simultaneously affect communication, measurement and control actuation channels. A unified notion of Persistency-of-Data-Flow (PoDF) is proposed to characterise the data unavailability in different information network links, and further quantifies the multi-layer DoS effects on the hierarchical system. With PoDF, we provide a sufficient condition of the DoS attacks under which the consensus can be preserved with the proposed edge-based self-triggered distributed control framework. In addition, to mitigate the conservativeness of offline design against the worst-case attack across all agents, an online self-adaptive scheme of the control parameters is developed to fully utilise the latest available information of all data transmission channels. Finally, the effectiveness of the proposed cyber-resilient self-triggered distributed control is verified by representative case studies.
accepted by IEEE Trans. on Smart Grid
- University College London United Kingdom
- Imperial College London United Kingdom
Resilience, 006, self-triggered networks, Systems and Control (eess.SY), Electrical Engineering and Systems Science - Systems and Control, denial of service (DoS), distributed control, FOS: Electrical engineering, electronic engineering, information engineering, networked microgrids
Resilience, 006, self-triggered networks, Systems and Control (eess.SY), Electrical Engineering and Systems Science - Systems and Control, denial of service (DoS), distributed control, FOS: Electrical engineering, electronic engineering, information engineering, networked microgrids
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