Lightning Protection Improvement and Economic Evaluation of Thailand’s 24 kV Distribution Line Based on Difference in Grounding Distance of Overhead Ground Wire

<table class="table-group" id="tab7"><tr><td><table class="table"><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr class="thead"><td class="align_left">Parameters</td><td class="align_center" colspan="5">Description</td></tr><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr><td class="align_left">Grounding distance of OHGW (m)</td><td class="align_center">40</td><td class="align_center">80</td><td class="align_center">120</td><td class="align_center">160</td><td class="align_center">200</td></tr><tr><td class="align_left">Number of concrete poles per 100 km</td><td class="align_center">2,500</td><td class="align_center">1,250</td><td class="align_center">833</td><td class="align_center">625</td><td class="align_center">500</td></tr><tr><td class="align_left">Investment cost per pole (USD per pole)</td><td class="align_center" colspan="5">302.27 (Table <a href="../tab6/">6</a>)</td></tr><tr><td class="align_left">Total cost (USD) per 100 km</td><td class="align_center">755,666.70</td><td class="align_center">377,833.35</td><td class="align_center">251,888.90</td><td class="align_center">188,916.67</td><td class="align_center">151,133.34</td></tr><tr class="table-tr"><td colspan="6"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Total investment cost for 100 km distribution lines.</div>

Mathematical Problems in Engineering

tab7

Table 7

Table 7: Lightning Protection Improvement and Economic Evaluation of Thailand’s 24 kV Distribution Line Based on Difference in Grounding Distance of Overhead Ground Wire 

Table 7 | Lightning Protection Improvement and Economic Evaluation of Thailand’s 24 kV Distribution Line Based on Difference in Grounding Distance of Overhead Ground Wire 