The article views the impact of natural factors (snow, icing, trees falling on the wires, etc.) on the safety of overhead electric power line. The authors suggest technological clearance plan for electric power line.
Power lines (transmission lines), as well as wired communication lines in some areas pass through forest plantations (this can be a forest, forest Park areas, forest belts along roads, etc.). Clearing of overhead lines is an integral part of the annual repair program and successful preparation of the electric grid economy for the next autumn-winter period. All work is carried out either with the use of small-scale mechanization, or with the help of mulcher complexes.
One of the pressing issues for the power industry - cleaning of the walkways in the protected zones of overhead lines. Analysis of incidents and accidents at network facilities in recent years shows that the fall of trees and touching the branches of wires are the main causes of about a third of all power line outages. According to the security requirements of the alignment of overhead lines should periodically clean up on wood-handicraft vegetation.
The fall of trees on the power line, broken wires, and, as a consequence, the termination of electricity supply to consumers - the main reason for emergency situations in the power grid complex, as a significant part of the power lines pass through forests. In addition, most of the air lines were built in the 60-70-ies of the twentieth century – the trees during the operation of power lines have grown strongly. Today, the width of the cutting of air lines due to the increase in the height of the trees does not meet the existing standards.