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The electric power grid is a cyber-physical system (CPS) that forms the lifeline of modern society. The advanced devices and communication infrastructure of the Supervisory Control and Data Acquisition (SCADA) system enable operators to deliver reliable and high-quality power. However, inherent cyber security vulnerabilities put system operation at risk by providing an attack surface to cyber threat actors. A smart attacker, that is, a cyber threat actor with expertise in physical power system operation could cause severe damage to the power grid infrastructure and its reliability by stealthily manipulating SCADA operation. This dissertation explores such impacts to power grid operation from cyber attacks and more importantly, introduces novel mitigation schemes to minimize or negate the impacts. It has two primary components risk modeling of coordinated cyber attacks and attack resilient control.

Cyber risk modeling and attack-resilient control for power grid