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Event-based model predictive damping control for power systems with cyber-attacks.

Yuezhi Liu1, Yong Chen1, Meng Li1

  • 1The School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu, Sichuan 611731, China; Institute of Electric Vehicle Driving System and Safety Technology, University of Electronic Science and Technology of China, Chengdu, Sichuan 611731, China.

ISA Transactions
|December 21, 2022
PubMed
Summary
This summary is machine-generated.

This study introduces a secure wide-area model predictive damping control (WEMPDC) to counter denial of service (DoS) and deception cyber-attacks in power systems. The proposed WEMPDC strategy ensures system stability and effectively mitigates cyber-attack-induced oscillations.

Keywords:
Cyber-attacksEvent-triggered mechanismInput-to-state-stable in probabilityModel predictive controlWide-area damping control

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Area of Science:

  • Power Systems Engineering
  • Control Theory
  • Cybersecurity

Background:

  • Wide-area power systems (WAPS) are vulnerable to cyber-attacks like denial of service (DoS) and deception attacks.
  • Cyber-attacks can induce interarea oscillations, compromising power system stability.
  • Existing control strategies may not adequately address the complexities of WAPS under sophisticated cyber threats.

Purpose of the Study:

  • To develop a secure model predictive damping control strategy for WAPS resilient to DoS and deception attacks.
  • To design a controller that actively dampens interarea oscillations caused by cyber-attacks.
  • To guarantee the probabilistic stability of the closed-loop system under attack scenarios.

Main Methods:

  • Establishing a WAPS model incorporating DoS and deception attacks with an event-triggered mechanism (ETM).
  • Designing a wide-area model predictive damping controller (WEMPDC) utilizing wide-area information.
  • Employing ETM to trigger WEMPDC for efficient defense against cyber-attacks.
  • Analyzing the input-to-state stable in probability (ISSiP) of the closed-loop system.

Main Results:

  • The proposed WEMPDC effectively damps interarea oscillations in WAPS under cyber-attacks.
  • The event-triggered mechanism optimizes control actions, reducing communication load.
  • Probabilistic stability (ISSiP) of the closed-loop system is mathematically guaranteed.
  • Simulations on two-area four-machine and 16-machine 68-bus systems validate the controller's effectiveness.

Conclusions:

  • The WEMPDC strategy provides a robust defense against DoS and deception attacks in WAPS.
  • The integration of ETM enhances control efficiency and system resilience.
  • The proposed method ensures the stability and security of wide-area power systems in the face of cyber threats.