Electromagnetic fields due to overhead and buried high-voltage power-lines: a quantitative comparison

Electromagnetic field above the earth's surface due to a buried three‐phase high‐voltage power‐line

“…While some results have been compiled for this purpose on the magnetic field(s) due to overhead transmission-lines [3], relevant data on buried system(s) of power-lines are rather sparse. Existing studies [4] on buried lines refer to some measured values compiled for the purpose of elucidating the costeffectiveness of undergrounding the lines (in lieu of overhead routing) versus the extent of magnetic field suppression above the earth's surface; and a recent study [5] (by two of the authors) provides a quantitative method to compare the magnetic fields due to buried and overhead, single-phase lines with identical voltagehmpacity ratings.…”