Impact of cyber attacks on transient stability of smart grids with voltage support devices

Cyber security is becoming a major concern of smart grids, as the functionality of a smart grid is highly dependent on the cyber communication. Therefore, it is important to study the impact of cyber attacks on smart grids. This paper discusses several types of cyber attacks. Then, it presents results of studies of impacts on transient angle and transient voltage stability due to cyber attacks on two voltage support devices, SVC and STATCOM, in an 8-bus test system. The 8 bus system and voltage devices are simulated and the stability analysis is performed with DSATools™. The results showed that some modification cyber attacks can make the system angle or voltage unstable, following a physical fault in the system.