Fault location | Transition resistance/(˚) | Fault initial angle | Fault distance | Transition resistance Ω | Decision result |
Line, L1, L2, L3, L4 | AG ABG BC ABC | 45˚ | Distance from bus M 20 km | 80 | External External External External |
Bus M | AG ABG BC ABC | 45˚ |
| 200 | Internal Internal Internal Internal |