Response of an overhead wire near a NEMP simulator

Hansen, David R.; Schaer, H.; Koenigstein, D.; Hoitink, H.; Garbe, Heyno; Giri, D. V.

doi:10.1109/15.45247

Cited by 11 publications

(2 citation statements)

References 2 publications

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“…We define that the direction parallel to the Earth is Z axis and the transmission line is located on ( x , z ) face Figure . Between the wire and the Earth, make a square area S with a boundary L , then the region satisfies Maxwell's equation and Stokes' theorem (Hansen et al, ; Wang et al, ).

\int_{S} \nabla \times E_{1} \cdot u_{n} normald S = \int_{L} E_{1} \cdot u_{l} normald l = - \frac{\partial}{\partial t} \int_{S} B_{1} \cdot u_{n} normald S

…”

Section: Theoretical Analysismentioning

confidence: 99%

“…However, there is not much research on the numerical simulation of overvoltage in overhead lines at home. In the study of the response of lightning current disturbance to overhead wires, we use theoretical and simulation calculations (such as transmission line theory and finite difference time domain method) (Hansen et al, ). Wen et al () obtained the distribution characteristics of the induced lightning overvoltage of the distribution lines through numerical calculation of induced overvoltage in overhead wires.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Relationship Between the Electromagnetic Wave Energy Coupled by Overhead Lines and the Radiation Source Current Explored in the Laboratory

Wan

2018

Radio Science

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In order to solve the damage and interference problems to the electronic devices, which are induced by overvoltage excited by the coupling process between lightning electromagnetic wave and overhead lines, the lightning channel is set to be equivalent to a radiant wire antenna. Based on the integration model of lightning return stroke channel, transmission line, and ground, we take advantage of the derived formula gotten from the transmission line model. By combing the theoretical and experimental methods, we conduct a comparative analysis on the coupling process between natural/simulated lightning and overhead line. Besides, we also calculate the amplitude and energy of overvoltage, which is caused by the coupling process between lightning electromagnetic wave and overhead lines. Upon these experimental results, we can draw several conclusions as follows: when the amplitude of the lightning current in the channel is between 5 kA and 41 kA, it takes on an excellent linear relation between the amplitude of overvoltage and the magnitude of the lightning current, the relation between coupling energy and magnitude of the lightning current takes on an exponential trend. When lightning wave transmits on the transmission lines, the high‐order mode will be excited. Through analysis on the high‐order mode's characteristics, we find that the theoretical analysis is consistent with the experimental results, which has a certain reference value to the protection on overhead lines.

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