Calculation of Lightning Outage Rate of High Voltage Transmission Line
Calculation of Lightning Outage Rate of High Voltage Transmission Line
复制标题
高压输电线路雷击断电率计算
DOI：
10.1109/appeec.2012.6307346
复制
发表时间：
2012
期刊：
影响因子：
--
通讯作者：
Gao Shu
中科院分区：
文献类型：
--
作者：
Geng Jianghai;Jia Bo;Gao Shu
分析计算了直击雷对高压输电线路的停运率，包括雷击塔顶的直击雷（反击）和雷击导线的圆击雷（绕击）。利用电气几何模型和暴露距离，计算了绕击引起的停电率。基于IEEE Flash程序的原理，计算了绝缘子串两端电压和回冲引起的停电率。应用该方法计算了河北保定某220 kV同塔双回输电线路的雷击开断率。根据计算结果，提出了提高线路绝缘水平应采取的措施。
The outage rate of high voltage power transmission lines caused by direct lighting has been analyzed and calculated, including straight lightning stroke on tower top (backstroke) and round stroke to conductor (shielding failure). Using the electrical geometry model and exposure distance, the outage rate caused by shielding failure is calculated. Based on the principles of IEEE flash program, the voltage across the insulator string and the outage rate caused by backstroke are calculated. Applying this method, the lightning outage rates of a 220kV double circuit transmission lines in Baoding, Hebei, China have been calculated. According to the calculated results the measures has been proposed which should be taken to improve the line insulation level.