GALVANIC EFFECTS AND SOIL INHOMOGENEITY ALONG THE LENGTH OF A TELECOMMUNICATIONS CABLE

Considerable voltages are induced and high potentials are generated wh en short-circuits occur across high-voltage lines (HVL) running near c able communications lines (CCL). Such voltages can be a danger to the cable, communications equipment and maintenance personnel [1]. The pot ential across the cable sheath running near a substation or support wh ere the short-circuit occurs will depend on the electrical properties of the cable, and its position relative to the grounding equipment on the high voltage line and the soil resistivity [1, 3]. A wave equation including the scalar and vector potentials is solved based on a solut ion of the first and second Dirichlet boundary value problem. The solu tion of the first problem reduces to a linear, inhomogeneous, integrod ifferential equation of the second kind.