Research on NOFRF Entropy-Based Detection Method for Early Damage of Pillar Porcelain Insulator

<table class="table-group" id="tab5"><tr><td><table class="table"><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr class="thead"><td class="align_left">Stem diameter (mm)</td><td class="align_center">High (mm)</td><td class="align_center">Big umbrella diameter (mm)</td><td class="align_center">Small umbrella diameter (mm)</td><td class="align_center">Number of umbrellas</td></tr><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr><td class="align_left">59</td><td class="align_center">1175</td><td class="align_center">125</td><td class="align_center">108</td><td class="align_center">27</td></tr><tr class="table-tr"><td colspan="5"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Main dimensions of pillar porcelain insulator.</div>

Shock and Vibration

tab5

Table 5

Table 5: Research on NOFRF Entropy-Based Detection Method for Early Damage of Pillar Porcelain Insulator 