A Method for Substation Operation Risk Situational Awareness Based on the Health State of Main Equipment

This paper proposes a substation operation risk situational awareness method based on the health state of the main equipment, with the goal of assessing the substation operation risk posture and performing risk prevention and control based on the situational awareness framework. Firstly, a risk propagation model considering the health state of the main equipment is proposed with reference to the SI (Susceptible–Infected) virus propagation model to simulate the risk propagation process among the main equipment of the substation; then, the potential risk severity index of the equipment is constructed based on the temporal set of risk propagation among the equipment within the substation to quantify the operational risk posture of the substation; finally, a case analysis is carried out by using a dual-voltage-level substation, and the results show that the method proposed in this paper can effectively simulate the risk propagation paths between the main equipment of a substation and the severity of the operational risk of each piece of main equipment. Based on the results of the substation operation risk situation assessment, it is used to guide the substation operation and inspection department to optimize the substation main equipment operation and inspection plan formulation, and to find the main equipment defects in time for overhaul and maintenance.