±500 kV超高压直流输电线路雷击成因分析及防雷措施探讨

±500 kV Ultrahigh Voltage DC Transmission Line be Struck by Lighting Factors Analysis and Lighting Protection Measures Discussion

通过对运行的±500 kV龙政线、宜华线两条超高压直流输电线路遭受雷击时所显示出来的特征,并经过计算杆塔接地线的保护角、统计线路区域内的雷暴日以及遭受雷击的杆塔所处在地理环境来验证输电线路在山区遭受雷击的可能成因以及雷击杆塔的种类,为今后的超高压输电线路防雷工作提供意见和建议。

Through to the operation of ±500 kV Long Zheng line and Yi Hua line,two ultrahigh voltage direct current transmission line be struck by lighting demonstrated the characteristic,passes through the computation poles and towers earth line the protection angle,in the statistical line region thunderstorm day as well as lay the geographical environment which the thunder stroke the poles and towers occupies to verify data the transmission line in the mountainous area be struck by lighting possible factors as well as poles and towers type be struck by lighting,will provide the opinion and the suggestion for present’s ultrahigh voltage transmission line lighting protection measures.