general question- single line to ground fault

Thread Starter

electric77

Joined Mar 18, 2016
9
so in general i have a system that consists of 5 buses, and at bus 2 i have a single line to ground fault.
what are the effects of adding a generator to any of the 5 buses except bus 2? (here all currents increase in the lines except for that where the current fault occurs my question is why?)
also what if i add an extra line from bus 2 to bus 4 where the fault occurs? (all all of my currents in all phases and buses drop why?)
 

ErnieM

Joined Apr 24, 2011
8,010
What is a bus? What are you generating? What did you drop?

Perhaps some context would help explain what you mean.

And welcome to the forums!
 

GopherT

Joined Nov 23, 2012
8,012
so in general i have a system that consists of 5 buses, and at bus 2 i have a single line to ground fault.
what are the effects of adding a generator to any of the 5 buses except bus 2? (here all currents increase in the lines except for that where the current fault occurs my question is why?)
also what if i add an extra line from bus 2 to bus 4 where the fault occurs? (all all of my currents in all phases and buses drop why?)
Dude,
Are you talking about a microcircuit on a printed circuit board or switch-gear in a factory?
 

Thread Starter

electric77

Joined Mar 18, 2016
9
so its a transmission system question:
a bus=node

in a transmission system we would transport power using a three-phase model (thus phase a, b, and c)
now with that we could have faults where a line gets short circuited or ground etc

my type of fault is single line to ground meaning phase a is grounded.

i have simulated by circuit on a program called power world and iam looking at the results, but i was hoping to get some certification for why my currents would drop in all nodes except the fault node when i add an extra generator
 

GopherT

Joined Nov 23, 2012
8,012
so its a transmission system question:
a bus=node

in a transmission system we would transport power using a three-phase model (thus phase a, b, and c)
now with that we could have faults where a line gets short circuited or ground etc

my type of fault is single line to ground meaning phase a is grounded.

i have simulated by circuit on a program called power world and iam looking at the results, but i was hoping to get some certification for why my currents would drop in all nodes except the fault node when i add an extra generator

I'm interested, Can you post the simulation results. Hopefully some type of graphic to show the standard case, (I imagine a standard 3-phase system (load may/may not be present). Then a fault-to-ground on "a", then you add additional generating power to one of the other two phases (and ground) (or across the other two phases) (or to all three phases?) - please clarify this fault and your additional generator.

And I assume the additional generator is in-phase with the initial power.
 
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