Fault type | Actual fault location (km) | Estimated fault location based on conventional measurements (km) | Estimated fault location based on new distance relay measurements (km) |
Line-to-ground fault (“A” phase-ground fault) | 40 | 40.2 | 40.2 |
80 | 80.8 | 80.8 | |
120 | 120.5 | 120.5 | |
160 | 162.0 | 159.3 | |
200 | 212.8 | 199.6 | |
240 | 253.0 | 240.7 | |
280 | 305.8 | 280.1 | |
Line-to-line-to-ground fault (“A” phase-“B” phase-ground fault) | 40 | 39.7 | 39.7 |
80 | 79.4 | 79.6 | |
120 | 119.0 | 120.0 | |
160 | 162.1 | 159.3 | |
200 | 203.2 | 199.9 | |
240 | 245.5 | 240.7 | |
280 | 289.5 | 280.1 | |
Line -to-line-to-line-to-ground fault (“A” phase-“B” phase-“C” phase-ground fault) | 40 | 39.7 | 39.70 |
80 | 79.4 | 79.6 | |
120 | 119.0 | 119.0 | |
160 | 162.1 | 159.3 | |
200 | 203.2 | 199.9 | |
240 | 245.5 | 240.7 | |
280 | 289.5 | 280.1 |