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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2013.3
- 수록면
- 36 - 42 (7page)
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This paper deals with the frequency-dependent ground impedance of ground grids combined with the carbon ground electrodes. Ground grids are generally valid for multipurpose grounding systems as well as lightning protection systems. The carbon ground electrodes may be supplementarily used to reduce the high frequency ground impedance and to improve the transient response to surge currents.
The frequency-dependent ground impedances of ground grids combined with or without the carbon ground electrodes were measured and their simulations with due regard to frequency-dependent soil resistivity were implemented by using EMTP program and Matlab modeling. As a consequence, the ground impedance of ground grids combined with the carbon ground electrodes is significantly reduced when the test current is injected at the terminal of the carbon ground electrode. The measured and simulated data for the test ground grids fairly agree with each other. It was found that the proposed method of simulating the frequency-dependent ground impedance is distinguished. The simulation techniques of predicting accurately the ground impedances without actual measurements can be used in the design of grounding systems based on ground grids and the carbon ground electrodes.
The frequency-dependent ground impedances of ground grids combined with or without the carbon ground electrodes were measured and their simulations with due regard to frequency-dependent soil resistivity were implemented by using EMTP program and Matlab modeling. As a consequence, the ground impedance of ground grids combined with the carbon ground electrodes is significantly reduced when the test current is injected at the terminal of the carbon ground electrode. The measured and simulated data for the test ground grids fairly agree with each other. It was found that the proposed method of simulating the frequency-dependent ground impedance is distinguished. The simulation techniques of predicting accurately the ground impedances without actual measurements can be used in the design of grounding systems based on ground grids and the carbon ground electrodes.
목차
Abstract
1. 서론
2. 실험 및 시뮬레이션
3. 결과 및 고찰
4. 결론
References
참고문헌 (12)
참고문헌 신청
2. [학술대회논문] - P. Llovera / 2006 / High frequency measurements of grounding impedance on resistive soils / 28th ICLP : 727 ~ 729
4. [학술지(정기간행물)] - S. Visacro / 2007 / A comprehensive approach the grounding response lightning currents / IEEE Transactions on Power Delivery 22 (1) : 381 ~ 386
5. [학술지(정기간행물)] - M. I. Lorentzou / 2003 / Time domain analysis of grounding electrode impulse response / IEEE Trans. Power delivery 18 (2) : 517 ~ 524
6. [학술지(정기간행물)] - Y. Liu / 2005 / An Engineering Model for Transient Analysis of Grounding System Under Lightning strikes: Nonuniform Transmission-Line Approach / IEEE Trans. Power Del 20 (2)
7. [기타자료] - / 1991 / IEEE Std. 81.2-1991, IEEE Guide for Measurement of Impedance and Safety Characteristics of Large, Extended or Interconnected Grounding Systems : 12 ~ 17
4. [학술지(정기간행물)] - S. Visacro / 2007 / A comprehensive approach the grounding response lightning currents / IEEE Transactions on Power Delivery 22 (1) : 381 ~ 386
5. [학술지(정기간행물)] - M. I. Lorentzou / 2003 / Time domain analysis of grounding electrode impulse response / IEEE Trans. Power delivery 18 (2) : 517 ~ 524
6. [학술지(정기간행물)] - Y. Liu / 2005 / An Engineering Model for Transient Analysis of Grounding System Under Lightning strikes: Nonuniform Transmission-Line Approach / IEEE Trans. Power Del 20 (2)
7. [기타자료] - / 1991 / IEEE Std. 81.2-1991, IEEE Guide for Measurement of Impedance and Safety Characteristics of Large, Extended or Interconnected Grounding Systems : 12 ~ 17
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