Currents in Disconnected Overhead Transmission Line Grounded in Each Tower Lightning Wire, Induced by Magnetic Field Currents of Parallel Operating Overhead Transmission Line

All high and ultra-high voltage overhead transmission lines under construction or reconstruction are equipped by lightning wires with built-in optical communication channels. Such lightning wires are grounded in each tower, and that leads to induction in its longitudinal electromotive forces by overhead transmission line currents magnetic fields. Induced electromotive forces in lighting wire closed circuits create currents, which values must be determined and assessed in terms of heat losses, thermal resistance, contact voltage, etc. The paper discusses the methodology and algorithm for currents induced in lightning wire grounded in each tower by line phase currents magnetic fields determination.