PT PLN (PERSERO) North Sumatra Development Parent Unit, in collaboration with the Research Institute of Universitas Sumatera Utara (LP-USU), formed a team of experts consisting of lecturers of Electrical Engineering Transmission and High Voltage Department of Electrical Engineering FT-USU to conduct research on Electromagnetic Induction on the 275 kV Extra High Voltage Air Line (SUTET) in Simangkuk-Sarulla, May 2022.