CPES-QSM: A Quantitative Method Towards the Secure Operation of Cyber-Physical Energy Systems

Juan Ospina, Venkatesh Venkataramanan, Charalambos Konstantinou

Research output: Contribution to journalArticlepeer-review

4 Scopus Citations

Abstract

Power systems are evolving into cyber-physical energy systems (CPES) mainly due to the integration of modern communication and Internet of Things (IoT) devices. CPES security evaluation is challenging since the physical and cyber layers are often not considered holistically. Existing literature focuses on only optimizing the operation of either the physical or cyber layer while ignoring the interactions between them. This article proposes a metric, the cyber-physical energy system quantitative security metric (CPES-QSM), that quantifies the interaction between the cyber and physical layers across three domains: 1) electrical; 2) cyber-risk; and 3) network topology. A method for incorporating the proposed cyber-metric into operational decisions is also proposed by formulating a cyber-constrained ac optimal power flow (C-ACOPF) that considers the status of all the CPES layers. The C-ACOPF considers the vulnerabilities of physical and cyber networks by incorporating factors such as voltage stability, contingencies, graph theory, and IoT cyber risks, while using a multicriteria decision-making technique. Simulation studies are conducted using standard IEEE test systems to evaluate the effectiveness of the proposed metric and the C-ACOPF formulation.

Original languageAmerican English
Pages (from-to)7577-7590
Number of pages14
JournalIEEE Internet of Things Journal
Volume10
Issue number9
DOIs
StatePublished - 1 May 2023

Bibliographical note

Publisher Copyright:
© 2023 IEEE.

NREL Publication Number

  • NREL/JA-5R00-84691

Keywords

  • Cyber metric
  • cyber-physical energy systems (CPES)
  • cybersecurity
  • optimal power flow (PF)
  • optimization
  • power systems

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