In order to evaluate accurately and classify effectively the impacts of cascading failures on actual safe and stable operation of power system caused by wildfire disasters

and considering the uncertainty of cascading failure process

the load shedding index of cascading failure process is taken as the research object to construct the resilience assessment index for classifying the impacts of different cascading failure-induced load shedding on power system. Based on the comprehensive consideration of geographical distribution of wildfires

wildfire spread characteristics and quantification of transmission line fault risks

the fault probability calculation method for transmission lines under wildfires is proposed

and an incremental state enumeration method combined with Monte Carlo simulation method is applied to the resilience assessment of power system. Finally

based on the historical data of wildfires in a specific province

the validity of the proposed resilience assessment model is verified on IEEE standard system

and the calculation work is carried out on 500 kV actual transmission network in this province to validate the good calculation accuracy and higher calculation efficiency of the proposed approach.