Influence of Mountain Topographic Slope and Stratified Conductivity Structure on Lightning Induced Voltages

被引：0
|
作者：
Zhang J. [1 ]
Wang L. [2 ]
Liang S. [2 ]
Peng X. [3 ]
Zhang Q. [1 ]
Tang Y. [1 ]
机构：
[1] Key Laboratory of Meteorological Disaster, Joint International Research Laboratory of Climate and Environment Change, Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disaster, Nanjing
[2] Yunnan Electric Power Test Institute (Group) Co., Ltd., Kunming
[3] Kunming Power Supply Bureau, Yunnan Power Grid Limited Liability Company, Kunming
来源：
Gaodianya Jishu/High Voltage Engineering | 2019年 / 45卷 / 09期
基金：
中国国家自然科学基金;
关键词：
Agrawal coupling mode; FDTD method; Hilly terrain; Lightning induced overvoltage; Overhead transmission and distribution lines;
D O I：
10.13336/j.1003-6520.hve.20190831029
中图分类号：
学科分类号：
摘要：
In order to investigate the influences of mountainous terrain on lightning induced voltages, a two-dimensional finite-difference time-domain (2-D FDTD) method was proposed to calculate the lightning induced voltages of overhead lines in hilly terrain. The validation of the FDTD algorithm was verified by comparing with the relevant research results abroad. The effects of the inclination angle, conductivity as well as its stratified structure on the lightning induced voltages of overhead lines were also calculated by the method proposed in this paper. The results show that, compared with the ideal flat terrain, the slope of the mountain terrain has a significant impact on the lightning overvoltage, especially in the case of limited soil conductivity, and the overvoltage amplitude increases significatly with the increase of the terrain slope; when the conductivity of surface soil is lower than the conductivity of lower-layer soil (σ1<σ2), the induced overvoltage amplitude increases significantly as the thickness of surface soil increases; while the conductivity of surface soil is larger (σ1>σ2), the lightning overvoltage amplitude decreases rapidly as the thickness of surface soil increases. When the thickness of surface soil exceeds 5 m, the overvoltage amplitude mainly depends on the conductivity of surface soil, and the influence of soil stratification can be neglected. The research results can provide a theoretical reference for lightning protection design of mountainous overhead transmission and distribution lines. © 2019, High Voltage Engineering Editorial Department of CEPRI. All right reserved.
引用
收藏
页码：2936 / 2944
页数：8
相关论文
共 34 条
  • [1] Wen X., Peng X., Xie G., Numerical calculation of lightning induced voltages on overhead distribution lines, Proceedings of the CSEE, 18, 4, pp. 299-301, (1998)
  • [2] Zeng R., Liu H., Zhuang C., Et al., Calculation of shielding failure flash over rate of transmission line using leader progression model, High Voltage Engineering, 43, 5, pp. 1581-1588, (2017)
  • [3] Zhano C., Lei M., Chen J., Et al., Statistical method of lightning current amplitude distribution along transmission line corridor, High Voltage Engineering, 43, 5, pp. 1609-1614, (2017)
  • [4] Wang J., Wu D., Li G., Arc-extinguishing characteristics research and application of 10 kV multiple-break arc-extingui- shing lightning protection gap, High Voltage Engineering, 43, 5, pp. 1589-1595, (2017)
  • [5] Wang L., Yang S., Zhu S., Et al., Prediction method of transmission line trip probability based on poisson distribution, High Voltage Engineering, 43, 11, pp. 3777-3783, (2017)
  • [6] Bian K., Chen W., Li C., Et al., Calculation of lightning induced overvoltage on overhead distribution lines, Proceedings of the CSEE, 32, 31, pp. 191-199, (2012)
  • [7] Ren H.M., Zhou B.H., Rakov V.A., Et al., Analysis of lightning-induced voltages on overhead lines using a 2-D FDTD method and agrawal coupling model, IEEE Transactions on Electromagnetic Compatibility, 50, 3, pp. 651-659, (2008)
  • [8] Yu Z., Zeng R., Wang S., Et al., Simulation calculation and analysis of lightning induced overvoltage on power distribution lines, High Voltage Engineering, 39, 2, pp. 415-422, (2013)
  • [9] Wait J.R., Recent analytical investigations of electromagnetic ground wave propagation over inhomogeneous earth models, Proceedings of the IEEE, 62, 8, pp. 1061-1072, (1974)
  • [10] Cooray V., Some considerations on the "Cooray-Rubinstein" formulation used in deriving the horizontal electric field of lightning return strokes over finitely conducting ground, IEEE Transactions on Electromagnetic Compatibility, 44, 4, pp. 560-566, (2007)
1234