동축구조 탄소접지전극의 접지임피던스에 대한 해석모델의 산정

초록

The coaxial type carbon grounding electrodes are used in reducing the variation of grounding impedance under high frequency injected currents. Two-layered distributed parameter circuit model for analyzing the frequency-dependent grounding impedance of coaxial structure grounding electrode filled with carbon mixtures was presented. The agreement between the simulated and the measured values of the frequency-dependent grounding impedance is fairly good. The analysis model proposed in this paper can be employed to determine the length of the grounding electrode minimizing the variation grounding impedance in a specified frequency bandwidth.