Abstract

In this paper, we develop a system-of-systems framework to address cyber-physical resilience, the ability to withstand the combined presence of both cyber attacks and physical faults. This framework incorporates a definition of resilience, a resilience metric as well as a resilient control design methodology. The resilient control architecture utilizes a hybrid optimal control methodology combined with a dynamic regulation market mechanism (DRMM), and is evaluated in the context of frequency regulation at a transmission grid. The framework enables the evaluation of both the classical robust control properties and emerging resilient control properties under both cyber attacks and physical faults. The proposed framework is used to assess resilience of a Cyber-Physical Energy System (CPES) when subjected to both cyber and physical faults via DETERLab. DETERLab, a testbed capable of emulating high fidelity, cybersecure, networked systems, is used to construct critical scenarios with physical faults emulated in the form of generator outages and cyber faults emulated in the form of Denial of Service (DoS) attacks. Under these scenarios, the resilience and performance of a CPES that is comprised of 56 generators and 99 consumers is evaluated using the hybrid-DRMM control methodology.

Date

2017

Authors

Stefanos Baros, Dylan Shiltz, Prateek Jaipuria, Alefiya Hussain, Anuradha M Annaswamy