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 main equipment, with the objective of assessing the substation operation risk posture and performing risk prevention and control based on the situational awareness model. Firstly, the time-varying failure rate corresponding to the risk propagation moment of the main equipment of the substation is obtained based on the equipment failure rate model considering the effect of equipment deterioration; Secondly, the risk propagation model considering the health state of the main equipment is proposed with reference to the SI virus transmission model to simulate the risk propagation process among the main equipment of the substation; Then, the construction of equipment potential risk severity index to realize the substation operation risk posture presentation; Finally, based on the results of the substation operation risk situation assessment, the main equipment operation and inspection plan is optimized to formulate the main equipment operation and inspection plan, and the defects of the main equipment are found in time to carry out overhauling and maintenance. The example analysis is carried out using a dual-voltage level substation, and the results show that the method proposed in this paper can effectively analyse the substation operation risk situation.