Secure control systems with application to cyber-physical systems

Conference · Wed Jan 01 00:00:00 EST 2014

OSTI ID:1148875

Dong, Jin ^[1]; Djouadi, Seddik M ^[1]; Nutaro, James J ^[1]; Kuruganti, Phani Teja ^[1]

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1. ORNL

Control systems are computer-based systems with networked units consisting of sensors, actuators, control processing units, and communication devices. The role of control system is to interact, monitor, and control physical processes. Reactive power control is a fundamental issue in ensuring the security of the power network. It is claimed that Synchronous Condensers (SC) have been used at both distribution and transmission voltage levels to improve stability and to maintain voltages within desired limits under changing load conditions and contingency situations. Performance of PI controller corresponding to various tripping faults are analyzed for SC systems. Most of the eort in protecting these systems has been in protection against random failures or reliability. However, besides failures these systems are subject to various signal attacks for which new analysis are discussed here. When a breach does occur, it is necessary to react in a time commensurate with the physical dynamics of the system as it responds to the attack. Failure to act swiftly enough may result in undesirable, and possibly irreversible, physical eects. Therefore, it is meaningful to evaluate the security of a cyber-physical system, especially to protect it from cyber-attack. Illustrative numerical examples are provided together with an application to the SC systems.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: OE USDOE - Office of Electric Transmission and Distribution
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 1148875
• Resource Relation: Conference: 9th Cyber and Information Security Research Conference, Oak Ridge, TN, USA, 20140408, 20140410
• Country of Publication: United States
• Language: English