Impact Analysis of Sensor Cyber-Attacks on Grid-Tied Variable Speed Hydropower Plants

Abstract

The variable speed doubly fed induction generators (DFIGs) are the future of hydrogenating plants owing to their flexible nature and speedy response. The new digitalized power scenario needs attention on cyber-attacks and measures suggested as per IEC Standard 62433 (2019): Security for Industrial Automation and Control Systems. Different system responds differently to cyber-attacks. This work focus on the impact analysis of speed and DC link voltage sensor attacks on grid connected large hydrogenating unit, of capacity 250MW. MATLAB simulations are carried out for False Data Injection (FDI) and Denial of Service (DoS) attacks and analyze the system behavior. The simulation results demonstrate that the system is affected severely under different attack scenarios.