NDLI: Power grids reliability appraisal with intrusion tolerant capability in SCADA systems

Content Provider	IEEE Xplore Digital Library
Author	Yichi Zhang Lingfeng Wang Yingmeng Xiang
Copyright Year	2014
Description	Author affiliation: Dept. of Electr. Eng. & Comput. Sci., Univ. of Wisconsin-Milwaukee, Milwaukee, WI, USA (Lingfeng Wang; Yingmeng Xiang) \|\| Dept. of Electr. Eng. & Comput. Sci., Univ. of Toledo, Toledo, OH, USA (Yichi Zhang)
Abstract	By intruding into the substations and control center of the supervisory control and data acquisition (SCADA) system, trip commands can be sent to intelligent electronic devices (IEDs) which control the system breakers. Reliability of the power system can be impacted through the cyber attacks. In this paper, a modified semi-Markov process (SMP) model is used to describe the procedures of normal and penetration attacks against the intrusion tolerant system. By modeling the transition probabilities between the SMP states and the sojourn time of each SMP state, the mean times to compromise (MTTCs) of the normal and penetration attacks are calculated. With increased probabilities of breaker trips resulted from the cyber attacks, the loss of load probabilities (LOLP) are evaluated based on IEEE reliability test system 79 (RTS79). When the level of attack increases or the level of defense in the system decreases, the simulation results demonstrate that the power system becomes less reliable.
Starting Page	2025
Ending Page	2030
File Size	503706
Page Count	6
File Format	PDF
ISBN	9781479950324
DOI	10.1109/POWERCON.2014.6993998
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-10-20
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	SCADA systems Servers Power system reliability Reliability Substations Load modeling loss of load probability Cyber security power system reliability Semi-Markov processes SCADA system mean time to compromise
Content Type	Text
Resource Type	Article

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