Omid Sadeghian

Omid Sadeghian

Thesis title: A Defensive Multi-Objective Direct Model to Protect Power Systems against Intelligent Physical Attacks to Transmission Lines

Ph.D. period: 2019-2020

Supervisors: Dr. Behnam Mohammadi-Ivatloo

Nowadays, power systems security is at stake due to different failures, especially intentional failures like intelligent physical attacks to vital elements. In viewpoint of the attacker, the most destructive aim is the aim with the highest damage to the power system such as line destruction, which leads to loss of load. On the other hand, the power system operator as the defender seeks to minimize the value of loss of load for that attack. Transmission lines, power stations, or transformers may be targeted in a physical attack. In this thesis, a direct model is proposed for defending power systems against attacking to a transmission line, which results in the maximum value for lost load. On the other hand, the system operator minimizes the loss of load for the worst case, which it is not specific in advance. Based on the system state and optimal power flow, the target line is not specific in advance. Therefore, the operator objective is an min-max optimization problem. A mixed integer non-linear programming model is presented in this paper. Finally, the resulted problem is implemented in GAMS software package for a case study to be solved using an appropriate solver and the obtained results are discussed in detail.

Publications in journals and conference papers may be found at Publications Page or Google Scholar.