Stepped Fault Line Selection Method Based on Spectral Kurtosis and Relative Energy Entropy of Small Current to Ground System

Figure 2

Length of window function.

(a) 𝑁_𝑤=64

(b) 𝑁_𝑤=128

(c) 𝑁_𝑤=256

(d) 𝑁_𝑤=512