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Cyber-Physical Attacks in Power Networks: Models, Fundamental Limitations and Monitor Design

Author(s):

F. Pasqualetti, F. Dörfler, F. Bullo
Conference/Journal:

Abstract:

Future power networks will be characterized by safe and reliable functionality against physical malfunctions and cyber attacks. This paper proposes a unified framework and advanced monitoring procedures to detect and identify network components malfunction or measurements corruption caused by an omniscient adversary. We model a power system under cyber-physical attack as a linear time-invariant descriptor system with unknown inputs. Our attack model generalizes the prototypical stealth, (dynamic) false-data injection and replay attacks. We characterize the fundamental limitations of both static and dynamic procedures for attack detection and identification. Additionally, we design provably-correct (dynamic) detection and identification procedures based on tools from geometric control theory. Finally, we illustrate the effectiveness of our method through a comparison with existing (static) detection algorithms, and through a numerical study.

Year:

2011
Type of Publication:

(15)Miscellaneous
Supervisor:



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% Autogenerated BibTeX entry
@Misc { PasD_r:2011:IFA_4951,
    author={F. Pasqualetti and F. D{\"o}rfler and F. Bullo},
    title={{Cyber-Physical Attacks in Power Networks: Models,
	  Fundamental Limitations and Monitor Design}},
    month=sep,
    year={2011},
    url={http://control.ee.ethz.ch/index.cgi?page=publications;action=details;id=4951}
}
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