Fault Line Selection Method of Small Current to Ground System Based on Atomic Sparse Decomposition and Extreme Learning Machine

Table 5

Every atom characteristic parameters of cable line .

Atoms	Scale /pu	Location shift /pu	Frequency shift /Hz	Phase/rad	Atom amplitude
1	3.6216 × 10^4	−2.2767 × 10^5	0.0297	1.4440	0.0513
2	1.3019 × 10^4	2.4196 × 10^3	0.0031		0.0065
3	2.3151 × 10^4	−1.5341 × 10^5	0.0738		0.0123
4	4.6146 × 10^3	−4.8524 × 10^3	0.1486	0.9955	0.0043