Effect of Different Factor on the Lightning Radiation Magnetic Field
Besides the calculation of lighting radiation magnetic field above perfect conductor ground, both the evaluation of lightning radiation field above lossy ground and that considering the effect of ionosphere are discussed in this paper and useful expressions are derived. With the soil resistivity, ionosphere, lightning channel height and observation point height taken into account respectively, the lightning radiation field is analyzed employing the obtained formula. Due to the reflection of ionosphere, multiple peaks occur in the waveform of the lightning radiation magnetic field. And for lightning channel of finite height, crossing zero point is obvious, but the tendency is more weaken for higher channel. The analysis also indicates that the effect of observation point height less than 200m on lightning radiation magnetic field and that of soil resistivity less than 10k Ω·m can be neglected.
Zhibin Zhao Jiahong Chen Mingxia Zhang Xiang Cui
School of Electrical and Electronic Engineering,North China Electric Power University, Baoding 07100 Wuhan High Voltage Research Institute of SGCC, Wuhan 430074, China
国际会议
第13届国际大气电学会议(The 13th International Conference on Atmospheric Electricity)
北京
英文
2007-08-13（万方平台首次上网日期，不代表论文的发表时间）