Study on risk assessment of trans-regional transmission lines tripping disaster induced by wildfire

Abstract

In recent years, there are more and more incidents of trans-regional transmission line tripping caused by wildfire. How to reduce the occurrence of such incidents has become a hot topic in domestic academic research. Hence, the associated risk factors of trans-regional transmission lines tripping disaster induced by wildfire is quantified based on system engineering theory of "human - machine - environment". A risk assessment index system is established by the application of analytic hierarchy process (AHP), and a certain transmission line in Hunan Province is taken as an example to conduct risk assessment analysis in this paper. The results indicate that the regional geographic location factors, the frequent meteorological disaster factors and the sacrifice festival burning situation exist relatively serious security risks. Increasing the coniferous trees planting area and enhancing the summer and the force of fall fire supervision are expected to be carried out for reducing security risks.