Dynamic State Estimation based Cyber Attack Detection scheme to Supervise Distance Relay Operation in Transmission line

This paper addresses the growing challenge of false tripping of distance relay caused by cyber attacks in power systems. To prevent significant disruptions in the power system, it is crucial to avoid false tripping of protective relays. In this study, a Dynamic State Estimation (DSE) technique is proposed to identify cyber attacks on distance relays and prevent false tripping. By utilizing previous bus data, the electrical quantities are estimated and compared with the actual bus data of the network to detect cyber attacks. The effectiveness of the proposed cyber attack detection method is demonstrated using the IEEE 9 bus system.