Wide-Area Damping Control Resilience towards Cyber-Attacks: A Dynamic Loop Approach

Abhilash Patel, Spandan Roy, Simone Baldi

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

By increasingly relying on network-based operation for control, monitoring, and protection functionalities, modern wide-area power systems have also become vulnerable to cyber-attacks aiming to damage system performance and/or stability. Resilience in state-of-the-art methods mostly relies on known characteristics of the attacks and static control loops (i.e., with fixed input/output channels). This work proposes a ‘dynamic loop’ wide-area damping strategy, where input/output channel pairs are changed dynamically. We study ‘reactive’ dynamic switching in case of detectable attack and ‘pro-active’ dynamical switching, in case of undetectable (stealth) attacks. Stability of the dynamic loop is presented via Lyapunov theory, under parametric perturbations, average dwell time switching and external perturbations. Using two-and five-area IEEE benchmarks, it is shown that the proposed strategy provides effective damping and robustness under various detectable (e.g., false data injection, denial-of-service) and stealth (replay, bias injection) attacks.

Original languageEnglish
Number of pages10
JournalIEEE Transactions on Smart Grid
DOIs
Publication statusPublished - 2021

Keywords

  • Benchmark testing
  • Cyber-attack
  • Damping
  • Dynamic Loop
  • Power system dynamics
  • Power system stability
  • Resilience
  • Stability criteria
  • Switched Controller
  • Switches
  • Wide-Area Damping Control.

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