Research Article
Stepped Fault Line Selection Method Based on Spectral Kurtosis and Relative Energy Entropy of Small Current to Ground System
Table 12
EMD relative energy entropy.
| Fault line | | / | EMD relative energy entropy | Entropy multiple | Results | Right? |
S1 |
S2 |
S3 |
S4 |
| Overhead line S2 | 0° | 20 | 1.9112 | 4.5143 | 5.1857 | 4.9335 | 2.36 > 2 | S2 | Y | 200 | 0.8032 | 3.8554 | 5.9764 | 4.8981 | 4.80 > 2 | S2 | Y | 150° | 20 | 2.0273 | 4.4264 | 5.7486 | 4.3812 | 2.18 > 2 | S2 | Y | 200 | 0.9719 | 4.1269 | 6.8780 | 6.2598 | 4.25 > 2 | S2 | Y |
| Hybrid line S3 | 0° | 20 | 0.7617 | 1.1209 | 4.8099 | 2.8481 | 1.47 < 2 | S3 | Y | 200 | 0.6714 | 0.9501 | 4.7789 | 2.9695 | 1.12 < 2 | S3 | Y | 150° | 20 | 1.0806 | 1.5968 | 5.3013 | 4.0003 | 1.48 < 2 | S3 | Y | 200 | 0.7927 | 1.3501 | 5.0642 | 2.7225 | 1.70 < 2 | S3 | Y |
| Cable line S4 | 0° | 20 | 0.5502 | 0.9428 | 5.4257 | 4.2543 | 1.71 < 2 | S4 | Y | 200 | 0.2029 | 0.7532 | 2.0443 | 3.7942 | 3.71 > 2 | S2 | N | 150° | 20 | 0.2706 | 0.3861 | 4.8885 | 4.0831 | 1.43 < 2 | S3 | N | 200 | 0.3037 | 1.5814 | 4.2905 | 5.5391 | 5.21 > 2 | S2 | N |
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