Research Article
Research on Low-Resistance Grounding Fault Line Selection Based on VMD with PE and K-Means Clustering Algorithm
Table 1
Calculation of entropy value by simulation experiment.
| | RN/Ω | PE | Line 1 | Line 2 | Line 3 |
| Different fault distances (L/km) | 8 | 5 | PE1 | 0.585 | 0.587 | 0.130 | PE2 | 0.540 | 0.544 | 0.127 | PE3 | 0.135 | 0.133 | 0.127 | 9 | 5 | PE1 | 0.563 | 0.569 | 0.132 | PE2 | 0.531 | 0.526 | 0.127 | PE3 | 0.130 | 0.131 | 0.127 | 8 | 15 | PE1 | 0.598 | 0.594 | 0.136 | PE2 | 0.551 | 0.550 | 0.126 | PE3 | 0.132 | 0.131 | 0.143 | 9 | 15 | PE1 | 0.584 | 0.580 | 0.133 | PE2 | 0.543 | 0.538 | 0.125 | PE3 | 0.132 | 0.132 | 0.139 |
| Different transition resistances (Rg/Ω) | Metal grounding | 5 | PE1 | 0.593 | 0.587 | 0.132 | PE2 | 0.558 | 0.558 | 0.126 | PE3 | 0.136 | 0.135 | 0.127 | 50 | 5 | PE1 | 0.588 | 0.586 | 0.130 | PE2 | 0.452 | 0.446 | 0.127 | PE3 | 0.132 | 0.135 | 0.129 | 100 | 5 | PE1 | 0.581 | 0.586 | 0.131 | PE2 | 0.501 | 0.490 | 0.126 | PE3 | 0.135 | 0.135 | 0.130 | 500 | 5 | PE1 | 0.591 | 0.598 | 0.131 | PE2 | 0.540 | 0.535 | 0.126 | PE3 | 0.135 | 0.136 | 0.130 | 1000 | 5 | PE1 | 0.596 | 0.608 | 0.131 | PE2 | 0.548 | 0.546 | 0.126 | PE3 | 0.136 | 0.135 | 0.130 | 2000 | 5 | PE1 | 0.599 | 0.607 | 0.131 | PE2 | 0.557 | 0.562 | 0.126 | PE3 | 0.135 | 0.135 | 0.129 | Metal grounding | 15 | PE1 | 0.623 | 0.630 | 0.131 | PE2 | 0.578 | 0.586 | 0.126 | PE3 | 0.127 | 0.128 | 0.129 | 50 | 15 | PE1 | 0.601 | 0.602 | 0.133 | PE2 | 0.552 | 0.553 | 0.126 | PE3 | 0.133 | 0.135 | 0.136 | 100 | 15 | PE1 | 0.571 | 0.563 | 0.132 | PE2 | 0.437 | 0.460 | 0.127 | PE3 | 0.128 | 0.127 | 0.129 | 500 | 15 | PE1 | 0.570 | 0.569 | 0.132 | PE2 | 0.473 | 0.469 | 0.126 | PE3 | 0.128 | 0.128 | 0.128 | 1000 | 15 | PE1 | 0.573 | 0.572 | 0.132 | PE2 | 0.483 | 0.481 | 0.126 | PE3 | 0.126 | 0.128 | 0.132 | 2000 | 15 | PE1 | 0.573 | 0.580 | 0.133 | PE2 | 0.486 | 0.481 | 0.127 | PE3 | 0.127 | 0.127 | 0.132 | High resistance arc grounding | 5 | PE1 | 0.579 | 0.587 | 0.133 | PE2 | 0.480 | 0.478 | 0.127 | 15 | PE3 | 0.128 | 0.129 | 0.132 | PE1 | 0.586 | 0.587 | 0.133 | PE2 | 0.482 | 0.478 | 0.127 | PE3 | 0.129 | 0.129 | 0.132 |
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