Study On The Mechanism Of Lightning Arc Truncation Of Transmission Line Based On The Action Of Blowing Air Flow

China has a vast territory and extensive distribution of transmission lines.In the vast land,lightning has many problems such as large dispersion,seasonal variation,large power and small energy,etc.,so many factors need to be considered in the prevention process.Meanwhile,its influence on transmission lines is also multi-directional and all-round.More than half of the non-human factor line tripping accidents are related to lightning strikes,which is enough to explain its impact on the power grid and the size of the scope of influence.Based on transmission line lightning protection measures and its existing shortcomings are analyzed,and puts forward the new methods of lightning protection for blowing air arcing,according to all sorts of main properties of the arc,fluid mechanics,etc.To solve the problem of high-speed for blowing air coupling arc made the simulation analysis,and in a wide range of scientific experiments,according to the analysis of various main properties arc to understand the changing process of arc in the air medium to free,arc extinguishing principle of energy balance,the effect on blowing air flow is obtained in the theoretical system of the electric arc and make it out.This thesis analyzes the feasibility of the theoretical method,puts forward the potential shortcomings,and points out the direction for future technological innovation.