Research Article
Research on Low-Resistance Grounding Fault Line Selection Based on VMD with PE and K-Means Clustering Algorithm
Table 3
Calculation entropy of a real test field.
| | RN/Ω | PE | Line 1 | Line 2 | Line 3 |
| Different fault distances (L/km) | 5 | 10 | PE1 | 0.135 | 0.589 | 0.583 | PE2 | 0.126 | 0.546 | 0.556 | PE3 | 0.131 | 0.131 | 0.131 | 7 | 10 | PE1 | 0.134 | 0.606 | 0.609 | PE2 | 0.126 | 0.542 | 0.553 | PE3 | 0.133 | 0.131 | 0.130 | 5 | 15 | PE1 | 0.138 | 0.583 | 0.584 | PE2 | 0.126 | 0.557 | 0.569 | PE3 | 0.133 | 0.129 | 0.134 | 7 | 15 | PE1 | 0.133 | 0.593 | 0.598 | PE2 | 0.127 | 0.546 | 0.557 | PE3 | 0.135 | 0.129 | 0.133 |
| Different transition resistances (Rg/Ω) | Metallic ground | 10 | PE1 | 0.135 | 0.589 | 0.583 | PE2 | 0.126 | 0.546 | 0.556 | PE3 | 0.131 | 0.131 | 0.131 | 50 | 10 | PE1 | 0.133 | 0.561 | 0.568 | PE2 | 0.126 | 0.463 | 0.473 | PE3 | 0.129 | 0.127 | 0.127 | 100 | 10 | PE1 | 0.133 | 0.572 | 0.579 | PE2 | 0.126 | 0.506 | 0.517 | PE3 | 0.132 | 0.127 | 0.128 | 500 | 10 | PE1 | 0.136 | 0.594 | 0.596 | PE2 | 0.126 | 0.538 | 0.546 | PE3 | 0.132 | 0.129 | 0.128 | 1000 | 10 | PE1 | 0.135 | 0.604 | 0.600 | PE2 | 0.127 | 0.552 | 0.550 | PE3 | 0.132 | 0.129 | 0.129 | 2000 | 10 | PE1 | 0.132 | 0.602 | 0.614 | PE2 | 0.127 | 0.443 | 0.436 | PE3 | 0.132 | 0.134 | 0.135 | Metallic ground | 15 | PE1 | 0.138 | 0.583 | 0.584 | PE2 | 0.126 | 0.557 | 0.569 | PE3 | 0.133 | 0.129 | 0.134 | 50 | 15 | PE1 | 0.133 | 0.562 | 0.576 | PE2 | 0.126 | 0.457 | 0.481 | PE3 | 0.128 | 0.128 | 0.130 | 100 | 15 | PE1 | 0.133 | 0.571 | 0.587 | PE2 | 0.127 | 0.468 | 0.479 | PE3 | 0.132 | 0.128 | 0.129 | 500 | 15 | PE1 | 0.132 | 0.599 | 0.591 | PE2 | 0.126 | 0.478 | 0.486 | PE3 | 0.132 | 0.128 | 0.128 | 1000 | 15 | PE1 | 0.132 | 0.598 | 0.585 | PE2 | 0.126 | 0.482 | 0.485 | PE3 | 0.132 | 0.127 | 0.128 | 2000 | 15 | PE1 | 0.133 | 0.598 | 0.590 | PE2 | 0.125 | 0.492 | 0.489 | PE3 | 0.133 | 0.128 | 0.130 | High resistance arc grounding | 10 | PE1 | 0.136 | 0.579 | 0.586 | PE2 | 0.126 | 0.523 | 0.550 | PE3 | 0.127 | 0.134 | 0.136 | 15 | PE1 | 0.134 | 0.585 | 0.589 | PE2 | 0.127 | 0.547 | 0.568 | PE3 | 0.131 | 0.132 | 0.141 |
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