Vulnerability Research for Cyber Physical Power System

In order to solve the problem of malicious manipulation and data leakage of power cyber-physical systems caused by cyber attacks, this paper proposes a vulnerability framework of power CPS based on dynamic attack and defence game to evaluate the weaknesses and potential risks of power CPS. In order to solve the problem of one-sidedness of the traditional attack and defence model, this paper first analyses the attack and defence process of power CPS, constructs an attack and defence strategy model, puts forward the strategies of both attack and defence in each stage, then builds a dynamic attack and defence game model of power CPS considering multiple factors such as cost, and finally conducts simulation experiments in the standard power network of IEEE118 nodes, analyses the vulnerability of power CPS under different total attack and defence resources, and provides a reference for power CPS defenders to reasonably plan defence resources.