Analysis of Electrical Risks by Electromagnetic Induction on Parallel High Voltage Overhead Transmission Lines

This study investigates the electrical risks associated with electromagnetic induction in parallel transmission lines that share the same right of way but have different voltage levels. Specifically, it is focused on scenarios involving maintenance work, voltage level changes, and operator contact. To address induced voltage and current risks, a case study involving a 220 kV transmission line running in parallel with a 500 kV line was analyzed using ATPDraw software for simulations and exploring three scenarios that involves temporary ground connections and earthing switch at extremes of the line together with the opening and closing of jumpers. Finally, recommendations for effective risk mitigation strategies are provided.