Systematic Comprehensive Diagnostics of Transmission Line Tower Earthing in Czech Republic

Adequate earthing of overhead transmission line towers is essential for reliability of the transmission lines and for safety of persons during operational faults as well. In particular, high tower footing resistance can lead to power supply outages during lightning strikes and to dangerous touch voltages under operational fault conditions (the operational electrical safety of transmission lines is evaluated in accordance with EN 50341-1 standard and CIGRE Technical