The most common fault occurring in the power system is a Single line to ground fault. Almost 70 per cent of faults occurring is Single line to ground faults.
|
Fault
|
Probability of occurrence.
|
|
Single line to ground fault
|
0.70
|
|
Line to line fault
|
0.15
|
|
Double line to ground fault
|
0.10
|
|
Line to line to line fault (Three phases are short-circuited)
|
0.02-0.03
|
|
Three line to ground fault
|
0.02-0.03
|
