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.
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Fault
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Probability of occurrence.
|
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Single line to ground fault
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0.70
|
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Line to line fault
|
0.15
|
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Double line to ground fault
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0.10
|
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Line to line to line fault (Three phases are short-circuited)
|
0.02-0.03
|
|
Three line to ground fault
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0.02-0.03
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