Coordinated cyber-physical attack considering false overload of lines

Abstract

The application of many sensor devices and complex information communication networks in a power system brings new potential threats to the electrical cyber-physical system. In this paper, a coordinated cyber-physical attack method considering false line overload is proposed. Through the combination of physical side attack and information side attack, the false data injection attack is used to cover up the physical attack and create false overload events, leading the dispatcher to make unreasonable scheduling strategies to achieve the purpose of affecting the economic operation of the system. In response to false overload events, this paper proposes a method to select the target line of false overload. At the same time, the output cost of the generator, the cost of load reduction and the number of overload lines are used as the evaluation indices to measure the damage capability of the coordinated attack, and the evaluation indices of different dimensions are normalized using fuzzy methods. Finally, the system losses caused by different attack modes are compared and analyzed through simulation calculations, and the effectiveness of the proposed model is verified.