전자계 이론을 이용한 수평접지전극의 과도전위 계산

초록

In this paper, the electromagnetic model was applied to calculate the harmonic impedance of grounding electrode. The lightning current waveforms, which are expressed by the Heidler's equation, were used in order to calculate accurately transient electric potential rises. The transient voltage was obtained by using the simulated harmonic impedance and the lightning current in frequency domain. Finally, the transient voltages of horizontal grounding electrode(10 m) under lightning stroke currents were calculated by IFFT(Inverse Fast Fourier Transform).