An Efficient Method for Available Transfer Capability Calculation Considering Cyber-Attacks in Power Systems

At this work, the impact of cyberattacks in power system Available Transfer Capability (ATC) solution is investigated using DIgSILENT Power factory software. Based on the literature, there reported several power network blackouts that caused by hackers and the Stuxnet worm in Ukraine, which exhibited that power systems are quite vulnerable to widespread and integrated cyberattacks. As a result, power market clearing mechanism and ATC solution can no longer be reliable if hackers possess enough information to manipulate input data. Instead of using complex methods to detect information manipulation in state estimation programs, this paper uses the weakness of the program when the correct information is entered. To end the evaluations, the proposed cyber-aware ATC algorithm is tested on a realistic utility network. Based on the simulation results, in spite of improvement in state estimation execution time, the quickness of ATC calculation is somewhat heightened when applying the proposed method of weighted least squares.