To study the effect of terrain conditions on the lighting shielding performance of utral high voltage(UHV) transmission lines and the effect of hillside on the discharge process, we studied the influences of hillside on the trend of discharge path and the discharge parameters by means of simulation experiment with the maximum gap distance of 11 m. Taking the SZ322 tower and transmission lines as the research object, of which the tower reduction ratio is set to be 1:12.5, we adopted the negative switching im...
【基金】
中国博士后科学基金(2014M560624)~~
【更新日期】
2016-10-17
【分类号】
TM863
【正文快照】
0引言1特高压输电线路在国内外可借鉴的实际运行——经验较少,目前特高压线路的雷电防护设计主要依赖仿真计算和低电压等级线路的运行经验[1-2]。日本中央电力研究院对日本地区500 k V和1 000 k V输电线路分别开展了持续7 a和5 a时间的雷电观测,观测结果显示雷电绕击500 k V和1