Research Article
Investigations on Incipient Fault Diagnosis of Power Transformer Using Neural Networks and Adaptive Neurofuzzy Inference System
Table 2
Fault diagnosis based on Rogers ratio codes.
| i | j | k | l | Diagnosis |
| 0 | 0 | 0 | 0 | Normal deterioration | 5 | 0 | 0 | 0 | Partial discharge | 1-2 | 0 | 0 | 0 | Slight overheating <150°C | 1-2 | 1 | 0 | 0 | Overheating 150°–200°C | 0 | 1 | 0 | 0 | Overheating 200°–300°C | 0 | 0 | 1 | 0 | General conductor overheating | 1 | 0 | 1 | 0 | Winding circulating currents | 1 | 0 | 2 | 0 | Core and tank circulating currents, overhead joints | 0 | 0 | 0 | 1 | Flashover without power following through | 0 | 0 | 1-2 | 1-2 | Arc with power following through | 0 | 0 | 2 | 2 | Continuous sparking to floating potential | 5 | 0 | 0 | 1-2 | Partial discharge with tracking |
|
|