Wildfire Risk Assessment Model for Transmission Lines Based on Matter-Element Extension Theory

To address the problems with single risk indicators and the overreliance on subjective experience in transmission line risk assessment, a matter-element extension-based model for assessing the risk of transmission line wildfires is proposed. First, a wildfire risk assessment index system for electricity transmission lines is established by incorporating four important wildfire risk indicators, including human activity, combustible material conditions, climatic circumstances and geographic considerations. Then, the matter-element extension assessment model is developed utilizing wildfire risk as an object element. Next, the fuzzy hierarchical analysis and the entropy weighting method are used to calculate the wildfire risk level of power transmission lines. Finally, the case study demonstrates the validity of the proposed method, which can guide grid operation and maintenance personnel in carrying out wildfire prevention and control work.