Research Article
Stepped Fault Line Selection Method Based on Spectral Kurtosis and Relative Energy Entropy of Small Current to Ground System
Table 6
SK relative energy entropy with S3 and S4 faults.
| | Fault line | | / | SK relative energy entropy | Entropy multiple | Results | | S1 |
S2 |
S3 |
S4 |
| | Hybrid line S3 | 0° | 20 | 1.4287 | 1.5408 | 4.9297 | 4.8318 | 1.08 < 2 | S3 | | 200 | 1.0894 | 1.1655 | 3.5634 | 2.8949 | 1.07 < 2 | S3 | | 150° | 20 | 1.1355 | 1.1165 | 4.4099 | 3.8247 | 1.02 < 2 | S3 | | 200 | 0.7395 | 0.4809 | 3.5649 | 2.1245 | 1.54 < 2 | S3 |
| | Cable line S4 | 0° | 20 | 0.8222 | 0.7218 | 3.7140 | 5.1669 | 1.14 < 2 | S4 | | 200 | 1.7250 | 1.1495 | 2.5230 | 4.0801 | 1.50 < 2 | S4 | | 150° | 20 | 0.4447 | 0.4522 | 3.3416 | 4.1139 | 1.02 < 2 | S4 | | 200 | 2.8497 | 4.0614 | 3.1244 | 3.6334 | 1.43 < 2 | S4 |
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