Comprehensive Assessment Method of Natural Disaster Risk for Compact Transmission Corridor

In order to promote natural disaster protection level of compact transmission corridor, a comprehensive assessment method for evaluating the overall risk of lightning strike, windage, contamination and icing is proposed in this paper. On the basis of existing risk maps, the data is standardized as the risk value for each natural disaster accordingly. Combining with historical tripping data of compact transmission corridor and expert scores for the four natural disasters, the risk weights of lightning strike, windage, contamination and icing are determined by integrating analytic hierarchy process (AHP) with entropy weight. Through multiplying the risk values and risk weights, the overall risk of the four natural disasters is calculated. Using the tripping data of one compact transmission corridor from 2013 to 2016 for risk assessment analysis, the result shows that the accuracy of this comprehensive assessment method is up to 94.4%, which can be used to improve the stability and security of compact transmission corridor.