Research on Low-Resistance Grounding Fault Line Selection Based on VMD with PE and K-Means Clustering Algorithm

Table 5

Discriminating line selection results of faulty lines under different algorithms.

Algorithm	R/Ω	RN/Ω	Line	Distance from fault Di1	Distance from nonfault Di2	Is it faulty?
VMD-PE-K-means (method 1)	0 Ω	10 Ω	Line 1	0.108	2.926	Yes
	100 Ω	10 Ω	Line 1	0.048	2.968	Yes
	500 Ω	10 Ω	Line 1	0.119	2.969	Yes
EMD-PE-K-means (method 2)	0Ω	10 Ω	Line 1	0.524	1.917	Yes
	100 Ω	10 Ω	Line 1	\	\	Indistinguishable
	500 Ω	10 Ω	Line 1	\	\	Indistinguishable
EEMD-PE-K-means (method 3)	0Ω	10 Ω	Line 1	0.560	1.917	Yes
	100 Ω	10 Ω	Line 1	0.540	1.904	Yes
	500 Ω	10 Ω	Line 1	\	\	Indistinguishable
HHT-PE-K-means (method 4)	0Ω	10 Ω	Line 1	0.124	0.133	Yes
	100 Ω	10 Ω	Line 1	0.129	0.135	Yes
	500 Ω	10 Ω	Line 1	\	\	Indistinguishable