Table 2 The relationship among the fault types, training data, and testing data
 | Fault type | Number of training data | Number of test data |
---|---|---|---|
Severity type | Arc discharge | 12 | 0 |
Spark discharge | 28 | 4 | |
Corona discharge | 21 | 3 | |
Insulation defect type | Protrusion defect | 48 | 7 |
Particle defect | 18 | 2 | |
Pollution defect | 47 | 4 | |
Gap defect | 48 | 4 |