engleski

Scalar electric potential in the air due to a direct current point source buried in the earth

It is a little known fact that in direct current grounding system analysis the current source buried in earth causes a scalar electric potential in the air. This occurs due to a formation of a surface charge along the conductor–dielectric boundary. In this paper, a method for obtaining the scalar electric potential expression in the air is developed for a two–layer and a three–layer horizontally stratified medium. The same method can be applied on a horizontally stratified multilayer medium with arbitrary number of layers.

direct current point source; electrostatic field; scalar electric potential; stationary current; surface charge

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