Grid voltage profile around corners & sides
Grid voltage profile around corners & sides
(OP)
The surface voltage profile in IEEE 80 examples shows that the voltage decreases at the last conductor near to the edge, however, these are the conductors with most leakage current into soil. I couldn't figure out the reason for this decrease of surface voltage towards the edges.
Any clue?
Any clue?






RE: Grid voltage profile around corners & sides
RE: Grid voltage profile around corners & sides
RE: Grid voltage profile around corners & sides
Just to add here:
the drop between the edge conductor and earth surface is greater than that for the middle since more leakage current is encountered. This is well understood, but, how the surface voltage is affected by currents not going to the surface? in other words that the current will be dissipated into ground, something usually deep depends on soil resistivitiy.
Mbrooke, I couldn't get what you mean, but I don't think that sudden cutting of GPR effect is possible since soil conducts current in a pattern similar to spherical waves.
RE: Grid voltage profile around corners & sides
https://www.youtube.com/watch?v=pAs_FmdxXhQ
People are no different existing or entering a substation during a fault.
RE: Grid voltage profile around corners & sides
The IEEE 80 example assumes an evenly spaced grid layout. The dip in surface potential and the resulting increase in touch potential near the edge argue for tightening the grid spacing as you move toward the fence.