Indemnity for Frequency Disruption in a Smart Grid during Cyber–Attack

Indemnity for frequency disruption in smart grid system due to cyber-attack is essential to avoid unstable power supply which can cause severe blackout. In this paper, a protective model is proposed for providing robust control of frequency in any situation, especially during cyber-attack on automatic generation control. A controlled switching unit is included in the protective model for ensuring protection against disruptive frequency during cyber-attack. The proposed control scheme restores frequency two times faster than the existing method.