Fault Current 2

[Danilo917]

Gents
can you help me figure out how the fault current at 11kv pole substation (first feeder out) say,2km out, returns to its source (Zone Substation)? Soil resistivity is less than 100 ohm m. Earthing at the pole sub is 2 x 2.4m electrode for HV & LV. Assuming a L-G fault happens at 11kV side.

regards,
Danilo

 

[Danilo917]

i think this is true if the L-G fault would occur at transformer tank..i dont know if this model applies also on L-G fault at distribution line, say, a fallen line conductor that touched the ground.

 

[Danilo917]

i think this is true if the L-G fault would occur at transformer tank..i dont know if this model applies also on L-G fault at distribution line, say, a fallen OH bare line conductor that touched the ground?