Research Article
Stepped Fault Line Selection Method Based on Spectral Kurtosis and Relative Energy Entropy of Small Current to Ground System
Table 9
SK relative energy entropy with different intensity noise (
,
).
| SNR/dB | Fault line | SK relative energy entropy | Entropy multiple | Results |
S1 |
S2 |
S3 |
S4 |
| −1.5678 | Overhead line S1 | 3.0665 | 1.2711 | 1.3520 | 2.7091 | 2.41 > 2 | S1 | Cable line S4 | 0.9898 | 0.8089 | 4.5347 | 5.6922 | 1.22 < 2 | S4 |
| −5.5678 | Overhead line S1 | 2.9061 | 1.1725 | 1.8192 | 2.7349 | 2.48 > 2 | S1 | Cable line S4 | 0.9375 | 0.5388 | 3.7573 | 5.2826 | 1.74 < 2 | S4 |
| −10.5678 | Overhead line S1 | 2.8449 | 1.0359 | 1.7698 | 2.4071 | 2.75 > 2 | S1 | Cable line S4 | 0.8267 | 0.4481 | 3.4586 | 3.9673 | 1.84 < 2 | S4 |
| −13.5678 | Overhead line S1 | 2.6814 | 0.6951 | 2.0311 | 2.1538 | 3.86 > 2 | S1 | Cable line S4 | 1.1979 | 0.7646 | 4.5726 | 5.8559 | 1.57 < 2 | S4 |
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