Computation of Peak Lightning-Induced Voltages Due to the Typical First and Subsequent Strokes Considering High Ground Resistivity
Computation of Peak Lightning-Induced Voltages Due to the Typical First and Subsequent Strokes Considering High Ground Resistivity
复制标题
考虑高接地电阻率的情况下，计算由典型的第一次和后续冲程引起的峰值雷电感应电压
DOI：
10.1109/tpwrd.2016.2555856
复制
发表时间：
2017
影响因子：
4.4
通讯作者：
M. Abdel
中科院分区：
文献类型：
--
作者：
Mohammad E. M. Rizk;F. Mahmood;M. Lehtonen;E. Badran;M. Abdel
架空配电线路的绝缘系统应设计合理，以确保其对附近回击引起的雷电感应过电压（LIOV）的免疫力。因此，准确计算低压绝缘电压峰值对绝缘设计具有重要意义。本文提出了一个计算第一次和随后的冲程的LIOV峰值的公式。考虑到地电阻率范围很宽，从0.25到20 k $\Omega $m，本研究采用了第一次和随后的回击的典型波形。采用与Agrawal耦合模型相关联的2-D时域有限差分法计算LIOV。此外，还研究了地面介电常数对LIOV峰值的影响。最后，建议的公式应用于计算每100公里的架空线路的闪络的年数。
It is essential that the insulation system of the overhead distribution lines should be properly designed to ensure their immunity against lightning-induced overvoltages (LIOVs) caused by nearby return strokes. Therefore, accurate calculation of the peak values of LIOVs is important for the insulation design. In this paper, a formula is proposed to calculate the peak values of LIOVs for both first and subsequent strokes. The typical waveforms of the first and subsequent return strokes are adopted for this study considering a wide range of ground resistivity, from 0.25 to 20 k $\Omega $m. The 2-D finite-difference time-domain method associated with the Agrawal coupling model is employed for the calculation of LIOVs. In addition, the effect of ground permittivity on the peak values of LIOVs is also investigated. Finally, the proposed formula is applied to calculate the annual number of flashovers per 100 km of the overhead line.
DOI：
10.1109/temc.1981.303970
发表时间：
1981-01-01
影响因子：
2.1
作者：
MUR, G
通讯作者：
MUR, G