Impact assessment of weather and climate events on overhead transmission lines reliability with voltages up to 110-220 kV

The article discusses the impact of climatic factors on such a reliability target of overhead transmission lines as the average failure rate of 1 km of overhead transmission lines. Using the example of two regions (Zabaykalsky Krai; Krasnodar Krai and Republic of Adygea) a quantitative and qualitative assessment of the weather phenomena impacts on overhead transmission lines accident rate with various voltage classes was carried out and the most significant meteorological factors were determined. To assess different impact of climatic factors on overhead transmission lines reliability, a comparative analysis of reliability targets between the regions under consideration was carried out.