Fourier singular values-based false data injection attack detection in AC smart-grids

Moslem Dehghani, Taher Niknam*, Mohammad Ghiasi, Pierluigi Siano, Hassan Haes Alhelou, Amer Al-Hinai

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Cyber-physical threats as false data injection attacks (FDIAs) in islanded smart microgrids (ISMGs) are typical accretion attacks, which need urgent consideration. In this regard, this paper proposes a novel cyber-attack detection model to detect FDIAs based on singular value decomposition (SVD) and fast Fourier transform (FFT). Since new research are mostly focusing on FDIAs detection in DC systems, paying attention to AC systems attack detection is also necessary; hence, AC state estimation (SE) have been used in SI analysis and in considering renewable energy sources effect. Whenever malicious data are added into the system state vectors, vectors’ temporal and spatial datum relations might drift from usual operating conditions. In this approach, switching surface based on sliding mode controllers is dialyzed to regulate detailed FFT’s coefficients to calculate singular values. Indexes are determined according to the composition of FFT and SVD in volt-age/current switching surface to distinguish the potential cyber-attack. This protection layout is presented for cyber-attack detection and is studied in various types of FDIA forms like amplitude and vector derivation of signals, which exchanged between agents such as smart sensor, control units, smart loads, etc. The prominent advantage of the proposed detection layout is to reduce the time (less than 10 milliseconds from the attack outset) in several kinds of case studies. The proposed method can detect more than 96% accuracy from 2967 sample tests. The performances of the method are carried out on AC-ISMG in MATLAB/Simulink environment.

Original languageEnglish
Article number5706
JournalApplied Sciences (Switzerland)
Volume11
Issue number12
DOIs
Publication statusPublished - Jun 2 2021

Keywords

  • Cyber-attack detection
  • Cyber-physical system
  • False data injection attack
  • Fast Fourier transform
  • Singular value de-composition
  • Smart island

ASJC Scopus subject areas

  • Materials Science(all)
  • Instrumentation
  • Engineering(all)
  • Process Chemistry and Technology
  • Computer Science Applications
  • Fluid Flow and Transfer Processes

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