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.

RNPELine 1Line 2Line 3

Different fault distances (L/km)85PE10.5850.5870.130
PE20.5400.5440.127
PE30.1350.1330.127
95PE10.5630.5690.132
PE20.5310.5260.127
PE30.1300.1310.127
815PE10.5980.5940.136
PE20.5510.5500.126
PE30.1320.1310.143
915PE10.5840.5800.133
PE20.5430.5380.125
PE30.1320.1320.139

Different transition resistances (Rg/Ω)Metal grounding5PE10.5930.5870.132
PE20.5580.5580.126
PE30.1360.1350.127
505PE10.5880.5860.130
PE20.4520.4460.127
PE30.1320.1350.129
1005PE10.5810.5860.131
PE20.5010.4900.126
PE30.1350.1350.130
5005PE10.5910.5980.131
PE20.5400.5350.126
PE30.1350.1360.130
10005PE10.5960.6080.131
PE20.5480.5460.126
PE30.1360.1350.130
20005PE10.5990.6070.131
PE20.5570.5620.126
PE30.1350.1350.129
Metal grounding15PE10.6230.6300.131
PE20.5780.5860.126
PE30.1270.1280.129
5015PE10.6010.6020.133
PE20.5520.5530.126
PE30.1330.1350.136
10015PE10.5710.5630.132
PE20.4370.4600.127
PE30.1280.1270.129
50015PE10.5700.5690.132
PE20.4730.4690.126
PE30.1280.1280.128
100015PE10.5730.5720.132
PE20.4830.4810.126
PE30.1260.1280.132
200015PE10.5730.5800.133
PE20.4860.4810.127
PE30.1270.1270.132
High resistance arc grounding5PE10.5790.5870.133
PE20.4800.4780.127
15PE30.1280.1290.132
PE10.5860.5870.133
PE20.4820.4780.127
PE30.1290.1290.132