Modelling and Impact Analysis of Two-Stage Intelligent Voltage Stability Cyber Attack Method in Power Grid

Ali Taghavi; Mohsen Gitizadeh; Jamshid Aghaei; Ghassan A. Bilal; Mohammed K. Al-Saadi

doi:10.37934/sej.13.1.199207

Authors

Ali Taghavi Department of Electrical and Electronics Engineering, Shiraz University of Technology, Shiraz, Iran
Mohsen Gitizadeh Department of Electrical and Electronics Engineering, Shiraz University of Technology, Shiraz, Iran
Jamshid Aghaei School of Engineering and Technology, Central Queensland University, Rockhampton, Queensland, Australia
Ghassan A. Bilal University of Technology-Iraq, Electromechanical Engineering Department, Baghdad, Iraq
Mohammed K. Al-Saadi University of Technology-Iraq, Electromechanical Engineering Department, Baghdad, Iraq

DOI:

https://doi.org/10.37934/sej.13.1.199207

Keywords:

Power systems, Cyber security, Microgrid, Voltage stability

Abstract

A continuous and reliable supply of electric power is crucial for power grid consumers. However, power grids face a growing threat from cyberattacks targeting their stability and causing widespread disruption. This paper proposes a novel Two-Stage Intelligent Voltage Stability (TIVS) attack model. The TIVS model takes advantage of the knowledge of attackers of vulnerabilities of the power grid. It manipulates a variable within the Voltage Stability Index (VSI) calculation. This manipulation aims to maximize disruption to the stability of the grid while minimizing the chance of detection. The model employs a two-stage approach. In the first stage, the attacker selects the amount of manipulation. The second stage, informed by the first, allows the grid to operate for cost optimization while keeping the manipulated variable fixed. Interestingly, information from this stage feeds back into the first stage, potentially aiding further manipulation by the attacker. The effectiveness of the TIVS model is compared to a traditional False Data Injection (FDI) attack through a case study on the IEEE 24-bus test system with interconnected microgrids. The TIVS attack causes a considerable increase in the cost of power grid, demonstrating its superior disruptive capabilities.