publication . Bachelor thesis . 2014

Improving Cyber-Security of Power System State Estimators

Giannini, Martina;
Open Access English
  • Published: 01 Jan 2014
  • Publisher: KTH, Reglerteknik
  • Country: Sweden
Abstract
During the last century, technological advances have deeply renewed many critical infrastructures, such as transportation networks and power systems. In fact, the strong interconnection between physical process, communication channels, and control systems have led to the new concept of cyber-physical systems. Next to countless new advantages, these systems unfortunately have also new weaknesses. An example is cyber-attacks: malicious intrusions into the communication channel turned to manipulate data. In this thesis the considered cyber-physical system is a power network where hundreds of eld devices are connected to a control center, which collects data and con...
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6.1 Main results . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87 2.1 Example of network . . . . . . . . . . . . . . . . . . . . . . . . 15 2.2 Power measurements . . . . . . . . . . . . . . . . . . . . . . . 26 2.3 Example of anomaly . . . . . . . . . . . . . . . . . . . . . . . 28 2.4 Residuals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 2.5 Probability False Alarm . . . . . . . . . . . . . . . . . . . . . 30 3.1 Example of attack . . . . . . . . . . . . . . . . . . . . . . . . . 35 3.2 Risk analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 5.1 Risk analysis: the index . . . . . . . . . . . . . . . . . . . . . . 80

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