Abstract
Information Technology (IT) infrastructure is used to send information from Phasor Measurement Unites (PMUs) to Phasor Data Concentrators (PDCs) and Control Centers (CCs) in modern smart grids. Unfortunately, vulnerabilities of IT infrastructure make modern smart grids prone to cyber-attacks. To detect such attacks, a number of Intrusion Detection Systems (IDSs) have been proposed in recent years. However, these IDSs can only detect attacks and are not capable of obtaining correct measurements and localizing the attack source. In this paper, these two capabilities are provided by proposing an approach based on static state estimation algorithm. The main focus of this approach is on attacks targeting smart grid integrity. Simulation results on the IEEE 14-bus test system indicate that in addition to detect integrity attacks, this method can extract the correct measurements and localize compromised devices or communication lines.
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