ABOUT RELIABILITY OF AIR TRANSMISSION LINES VOLTAGE 0.4-10 KV
The article deals with damage and reliability of overhead power lines. The results of the analysis of damage to the supports are given taking into account the over-calculated ice-wind loads. The main cause of damage to the contact clips is their improper installation, the use of non-standard clips of connection methods and high current loads. Maintenance of wires and fittings consists in periodic checks of their condition and repairs. Unplanned repairs are carried out in case of damage and detection of emergency outbreaks. Check the condition of the wires and fittings is carried out during bypasses and inspections VL. In addition, on BJI 35 kV and higher, after 6 years, high-end inspections are carried out with a selective check of the condition of the wires and cables in the clamps with continuous measurements of the resistance of the bolt clamps. Upper inspections BJ1 0.4-10 kV are made as needed. If necessary, measurements of dimensions and adjustment of the sag of wires will be organized.