Approach in the Cause of Thunderstroke Damages on Overhead Line in Xiangxi Mountainous Areas and the Countermeasures Against Thunder-protection
Xiongwei Zhang · Insulators and Surge Arresters · 2004
The thunderstrokes in Xiangxi mountainous areas are intense,accordingly,the strip-out rate from thunderstroke is very high.From experience,we have several effective methods to improve the thunder-protection level of line.The effective measures for improving the thunderstroke resistance level are as follows,considering the influence of the protective angle of the hillside while designing;enhancing the reconstruction of the grounded network,installing additional zinc oxide surge arresters in thunderous areas;grounding the cross-arm on 35kV overhead line and installing the grounded network.