A watchdog model for physics-based anomaly detection in digital substations

Hussam Tarazi, Sara Sutton, John Olinjyk, Benjamin Bond and Julian Rrushi

International Journal of Critical Infrastructure Protection, 2024, vol. 44, issue C

Abstract: The security of cyber–physical systems (CPS) presents new challenges stemming from computations that work primarily with live physics data. Although there is a body of previous research on detection of malware on CPS, more effective designs are needed to address limitations such mimicry attacks and other forms of evasive techniques. Relay algorithms in particular, such as differential and harmonic protection algorithms, are essential to protecting physical equipment such as power transformers from faults. Relay algorithms, though, are often disabled, altered, or otherwise suppressed by malware.

Keywords: Cyber physical system; Human machine interface; Industrial control system; Programmable logic controller; Watchdog; Sampled measure values; SCL programming language (search for similar items in EconPapers)
Date: 2024
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Persistent link: https://EconPapers.repec.org/RePEc:eee:ijocip:v:44:y:2024:i:c:s1874548224000015

DOI: 10.1016/j.ijcip.2024.100660

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