| Title |
Measurement and Analysis of Frequency Characteristics of Grounding Systems |
| Authors |
최종기 ; 안용호 ; 구선근 ; 박기준 ; 윤진열 ; 정길조 ; 류보혁 ; 김정훈 |
| Keywords |
ground impedance ; ground mesh ; frequency characteristics ; EMTP |
| Abstract |
Since DC ground resistance, which is a good index of the performance of a grounding system in low frequency. does not show the performance in transient state. We measured ground impedances in frequency domain ranging from 0.1 Hz to 900 KHz maximum to quantify the transient grounding performance of 4 types of grounding system. Transfer function was derived from the measured frequency-dependant ground impedance of a grounding grid. A simulation has been performed to verify the transfer function using EMTP (Electro-Magnetic Transient Program). |