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Abstract

For the problem of twisted pair coupling lightning electromagnetic impulse, using a combination of test and theory, established a experimental model of twisted pair coupled lightning electromagnetic impulse, get the twisted pair coupling lightning electromagnetic impulse voltage and spectrum characteristics, test results: (1) The situation of twisted pair link matching resistance (100 $\Omega$ ): the coupling voltage increases with the addition of the impulse current; Meanwhile, there is not much impact when increase the height of the coupling voltage. (2) The situation of twisted pair link ground electric resistance: the coupling voltage was positively correlated with the ground electric resistance value in the same height; The coupling voltage increases with increasing height when the resistance value remains the same. (3) Spectral characteristics of the coupling voltage: The frequencies are mainly concentrated around the two frequencies of 8 kHz and 2.3 MHz and the magnitude of the coupling voltage is proportional to the ground electric resistance and the impulse current. The experimental results are in good agreement with the theoretical analysis. The results have some guiding significance.

Keywords

Twisted pair coupling lightning electromagnetic impulse frequency spectrum

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Analysis of twisted pair coupling lightning electromagnetic impulse

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