Presentation of an Algorithm for Identification of the Most Vulnerable Bus in Electric Smart Grid Through Cyber-Attack Based on State Estimation

Considering the power grids automation and network data transferring in telecommunication infrastructure, the possibility of planning a cyber-attack grows up intensively. In this regard, the optimization of the budget for attack (BA) and budget for defense (BD) in a power network through cyber-attack is so crucial. In this paper, regarding the cyber invasion phase, the choice of the most vulnerable operating bus using the state estimation technique through a new algorithm is analyzed and simulated. For this purpose, false data injection is performed on the data sent from the PMU in such a way that it is not detectable to the network dispatching operator under the invasion. As a case study implementation of the suggested algorithm for a 14 IEEE bus network is carried out and the best bus in terms of exposure under attack is identified. The performance of this algorithm is based on the results obtained from state estimating of the grid after occurring a cyber-attack on different buses. Finally, the part of the grid, which the destruction of information in that part leads to the most damage to the grid, is determined.