Hi all
The dynamic response of the grounding electrodes subjected to such current pulses is predominantly influenced by same physical processes, which are related to the soil ionization in the immediate proximity of the grounding electrode, which is related to the current pulse intensity. In the case of a current pulse with a high peak value, the electric field at the ground electrodes may become larger than the electric strength of the soil, resulting in breakdown and spark discharges.
Different expressions and values are recommended for the critical value of the electric field.
What do you propose (which expression) in the case of a simulation for different resistivity value? Can be considered this critical electric field of the ground as a calibrating parameter ?
Thank you,
Omar
Critical electric field: Ek=241 ro^0,215 [kV/m], where ro-earth resistivity
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