Improvement of Methods of Inspection of Steel Structures of Overhead Power Line

The purpose of this publication is to develop proposals for updating and improving the methodology of technical inspection of steel structures of overhead power lines and assessment of technical condition. It is noted that there is a high proportion of damage to steel supports associated with aging of elements and corrosion wear. Considering the protective layer of corrosion products, there is a decrease in the aggressive effect of the atmosphere on the speed of the corrosion process. A method for determining the thickness of corrosion wear for the future with known wear for a known time of operation of the overhead line is proposed. This technique is confirmed by control measurements of the thickness of the corrosion layer in 1987 and in 2022 on steel supports of a 35 kV overhead line commissioned in 1972. An overhead power transmission line consists of a large number of transmission line supports, therefore, an integral assessment of the technical condition in points is more convenient for drawing up promising works on the reconstruction of overhead lines and repair of damaged structures.