Title :
Series-impedance of underground transmission systems
Author :
Machado, V. Maló ; Silva, J. F Borges da
Author_Institution :
Inst. Superior Tecnico, Lisbon, Portugal
fDate :
4/1/1988 12:00:00 AM
Abstract :
A general solution for the magnetic field in the soil is developed that satisfies arbitrary boundary conditions on an underground cylindrical surface at a finite depth below an earth/air plane surface. A quasi-steady state hypothesis is assumed. The series impedance of an underground cable with a perfectly conducting sheath is evaluated taking into account skin effect in the soil. The numerical results are compared with F. Pollaczek´s (1926) classical solution
Keywords :
magnetic fields; underground cables; underground transmission systems; boundary conditions; magnetic field; quasi-steady state hypothesis; series impedance; skin effect; soil; underground cable; underground transmission systems; Boundary conditions; Conductivity; Conductors; Current density; Dielectrics; Earth; Frequency; Insulation; Laplace equations; Permeability;
Journal_Title :
Power Delivery, IEEE Transactions on
