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논문 기본 정보

자료유형
학술저널
저자정보
Bok-Hee Lee (인하대학교) Jeong-Hyeon Joe (인하대학교) Jong-Hyuk Choi (인하대학교)
저널정보
대한전기학회 Journal of Electrical Engineering & Technology Journal of Electrical Engineering & Technology Vol.4 No.4
발행연도
2009.12
수록면
531 - 537 (7page)

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초록· 키워드

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Lightning has a broad frequency spectrum from DC to a few MHz. Consequently, the high frequency performance of grounding systems for protection against lightning should be evaluated, with the distributed parameter circuit model in a uniform soil being used to simulate grounding impedances. This paper proposes a simulation method which applies the distributed parameter circuit model for the frequency-dependent impedance of vertically driven ground rods by considering multi-layered soil structures where ground rods are buried. The Matlab program was used to calculate the frequencydependent ground impedances for two ground rods of different lengths. As a result, an increase of the length of ground rod is not always followed by a decrease of grounding impedance, at least at a high frequency. The results obtained using the newly proposed simulation method considering multi-layered soil structures are in good agreement with the measured results.

목차

Abstract
1. Introduction
2. Necessity of Consideration for Soil Structure
3. Theory of The Distributed Parameter Circuit Model in Uniform Soil
4. Methodology for Simulating Grounding Impedance in Multi-layered Soil
5. Conditions of Ground Rods and Soil for Measurement and Simulation
6. Results and Discussion
7. Conclusion
Acknowledgements
References

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