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ITSC fault current values_
| For Rf = 1 Ω | Estimated If moy | Measured If moy | RMSE |
|---|---|---|---|
| μ = 25% | 0.0182 | 0.0216 | 0.2303 |
| μ = 50% | 0.0321 | 0.0416 | 0.5513 |
Indication of ITSC severity_
| µ (%) | Tfault | Severity | Indication | |
|---|---|---|---|---|
| Rf = 1 Ω | µ = 25 | 40 turns | High | Poor visibility |
| µ = 50 | 80 turns | Extremely high | Higher visibility |
T2-FL rule set for Rs determination_
| E/E′ | NM | NS | Z | PS | PM |
|---|---|---|---|---|---|
| NM | NM | NM | NS | Z | PS |
| NS | NM | NS | Z | PS | PM |
| Z | NS | Z | Z | Z | PS |
| PS | Z | PS | PS | PM | PM |
| PM | PS | PM | PM | PM | PM |
Summary of comparative techniques under the same simulation conditions_
| Control strategy | RMSE of Rs estimation | MAPE of Rs estimation (%) | Estimation of Rs | Precision |
|---|---|---|---|---|
| EKF | 0.010378 | 1.8435 | Medium | Medium |
| FL–EKF | 0.0066925 | 1.6348 | High | High |
| Proposed optimised method | 0.0066416 | 1.6101 | High | Very high |