Dynamic Attack and Defense Security Situation Assessment Model for Power Information Physical Fusion System

Based on the attack of human factors in the power information physical fusion system, this paper studies and discusses the network security situation assessment method of modern power grid under the threat of human subjective attack. And this paper proposes a three-layer mathematical programming model of power grid attack and defense dynamic game in power physical network and power information network. Aiming at the proposed model, the corresponding solution method is given. In the process of solving, an optimal defense resource allocation strategy is applied to effectively obtain the resources to be allocated on the power grid components. Finally, the effectiveness of the proposed model and method is verified by a simple example system.