Magnetic field and impedances of an overhead two-wire transmission line with two-layer conductors

摘要

Distribution of the magnetic field in the surroundings of an overhead two-wire transmission line with two-layer conductors as well as the self and mutual impedances of the conductors are analysed. Determination of the vector magnetic potential enables the determination of the electric field strength as a sum of static and induced electric fields. Magnetic field in the surroundings of an overhead transmission line can also be determined. Electric field enables the determination of the self-impedance of a two-layer conductor as the sum of its internal and external impedance, as well as of the mutual impedance between the conductors. Finally the results of computation of the magnetic field and impedances performed with the help of the simulation programme Delphi 4 are presented.