Research Article
Multiparameter-Based Fuzzy Logic Health Index Assessment for Oil-Immersed Power Transformers
Table 8
HI comparison accuracies for different methods for 134 test transformers.
| Status | HI comparison of 134 test case transformers | Utility estimation | Method in [8] | Method in [5] | Proposed method |
| Excellent | 7 | 9 | 9 | 6 | Good | 28 | 26 | 26 | 27 | Moderate | 65 | 66 | 64 | 64 | Bad | 11 | 13 | 14 | 13 | Worst | 23 | 20 | 21 | 24 | Total transformers | 134 | 134 | 134 | 134 | Overall % error against utility HI | 7.5% | 6.7% | 4.5% |
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