Abstract
Annotation.This paper analyzes the current state of overhead power lines and the reasons for the decline in their reliability.The development of electrical systems aimed at improving the quality and reliability of power supply to consumers under conditions of ice and wind loads, their testing, analysis of efficiency and implementation in electric power systems is an urgent task in areas with a sharply continental climate and in conditions of unprecedented extreme climatic phenomena.The purpose of the presented study is to identify the causes of emergency shutdowns of overhead power lines during ice formation and to evaluate the method of melting ice with current to prevent accidents in power systems.The results of the study include identifying the impact of ice formation on overhead power lines in the Republic of Kazakhstan and substantiating an effective method for melting ice for structural elements on power lines.The article discusses methods of combating ice formation, presents the results of long-term observations of climatic parameters affecting ice formation in the regions of the Republic of Kazakhstan, the efficiency of a device for melting ice using a short circuit method, analyzes the expected mechanical loads on wires, and determines the values of critical spans for selecting foundations for transmission line supports.