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

<table class="table-group" width="800px"><tr class="fig-image" id="a"><td><img alt="726205.fig.006a" src="https://static.hindawi.com/articles/jam/volume-2014/726205/figures/726205.fig.006a.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(a) </b>Overhead line S<sub>1</sub></td></tr></table></td></tr><tr class="fig-image" id="b"><td><img alt="726205.fig.006b" src="https://static.hindawi.com/articles/jam/volume-2014/726205/figures/726205.fig.006b.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(b) </b>Overhead line S<sub>2</sub></td></tr></table></td></tr><tr class="fig-image" id="c"><td><img alt="726205.fig.006c" src="https://static.hindawi.com/articles/jam/volume-2014/726205/figures/726205.fig.006c.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(c) </b>Hybrid line S<sub>3</sub></td></tr></table></td></tr><tr class="fig-image" id="d"><td><img alt="726205.fig.006d" src="https://static.hindawi.com/articles/jam/volume-2014/726205/figures/726205.fig.006d.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(d) </b>Cable line S<sub>4</sub></td></tr></table></td></tr></table>

<table>Transient zero-sequence current.</table>

Journal of Applied Mathematics

fig6

Figure 6

Figure 6: Stepped Fault Line Selection Method Based on Spectral Kurtosis and Relative Energy Entropy of Small Current to Ground System 