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Table 9 Response for variation in source impedance

From: ANN based directional relaying scheme for protection of Korba-Bhilai transmission line of Chhattisgarh state

Fault type Fault inception angle(deg) Source Impedance (in Ω) Fault location (in km) Fault phase identification time(ms) Fault section identification time
A B C G
AG 0 3.9 + j39.33 10 2    2 2
BG 45 4.1 + j41.20 30 - 7 - 5 7
CG 90 4.3 + j43.07 50 - - 3 2 3
ABG 135 4.9 + j44.89 70 4 4 - 2 4
ACG 180 3.9 + j35.53 90 1 - 1 4 4
BCG 225 3.7 + j33.66 110 - 7 4 5 7
BC 270 2.8 + j31.86 130 - 4 5 - 5
CA 315 2.7 + j29.98 150 8   8 - 8
AB 360 3.7 + j41.24 170 3 5 - - 5
ABC 0 5.3 + j42.97 190 4 6 9   9