Presentation of Real-time Risk Assessment Results of Substations Based on Three-color Diagrams

At present, substations lack comprehensive health risk control and real-time risk assessment. In this paper, we construct a multi-level equipment importance model and a multi-level operating state model. Then we propose a real-time risk assessment method for substations based on the three-color method by analyzing and calculating the importance of health indicators of substations. The method can reflect the current operating status of substations and the probability and possibility of accidents and failures. Moreover, our method reveals the consequences of these accidents and failures and their impacts. Finally, the validity of the proposed method is verified by arithmetic examples.