Browse > Article
http://dx.doi.org/10.5207/JIEIE.2011.25.4.097

An Analysis of the Ground Potential Rises and Dangerous Voltages Associated with the Frequency of Ground Currents  

Choi, Jong-Hyuk (인하대학교 대학원 전기공학과)
Cho, Yong-Sung (인하대학교 대학원 전기공학과)
Lee, Bok-Hee (인하대학교 공대 전자전기공학부)
Publication Information
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers / v.25, no.4, 2011 , pp. 97-103 More about this Journal
Abstract
The most important object of grounding systems is to protect human being from electric shock. Touch and step voltages are measured to evaluate the performances of grounding systems. Dangerous voltages have been largely studied by the power frequency fault currents, on the other hand, the ground current containing the high frequency components and surge currents haven't been considered. Many attempts about the grounding impedances reported in these days show that the performance of the grounding systems in high frequency range is very different with the ground resistance. It is necessary to analyze the dangerous voltages formed by the ground currents containing high frequency components. In this paper, the ground surface potential rises near the vertical and horizontal grounding electrodes are measured at the frequency of 100[Hz], 30[kHz], and 100[kHz]. Dangerous voltages are investigated with the frequency-dependent grounding impedance. As a result, the ground surface potential rise is increased as the grounding impedance increases. Touch and step voltages near the grounding electrode whose impedance increases with the frequency are sharply raised.
Keywords
Ground Surface Potential Rise; Dangerous Voltage; Touch Voltage; Step Voltage; Grounding Impedance;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 최종혁, 최영철, 이복희, “수직 접지전극의 접지임피던스 측정에서 도전유도에 의한 오차 평가”, 전기학회 논문지, Vol.58, No. 9, pp.1778-1783, 2009.   과학기술학회마을
2 이복희, 이승칠, “접지의 핵심 기초 기술”, 도서출판 의제, pp.84-87, 1999.
3 Kosztaluk, R., Mukhedkar, R. Gervais, Y., “Field Measurements of Touch and Step Voltages”, IEEE Trans. on PAS, Vol 103, No. 11, pp.3286-3294, 1984.   DOI
4 Chow, Y.L., Salama, M.M.A., Djogo, G., “Thevenin source resistances of the touch, transferred and step voltages of a grounding system”, IEE PGTD, Vo. 146, No. 2, pp.107-114, 1999.
5 IEEE Std. 80-2000, “IEEE Guide for Safety in AC Substation Grounding”, pp. 20-23, 2000.
6 Silverio Visacro, “A Comprehensive Approach to the Grounding Response to Lightning Currents”, IEEE Trans. on P.D., Vol. 22 No. 1, January, 2007.   DOI
7 Leonid Grcev, “Impulse Efficiency of Ground Electrodes”, IEEE Trans. on P.D. Vol. 24, No. 1, pp.441-451, 2009.   DOI
8 Pedro Llovera, Juan Antonio LLiso, Alfredo Quijano, Vicente Fuster, “High frequency measurements of grounding impedance on resistive soils”, 28th ICLP, pp.727-729.
9 IEEE Std. 81.2-1991, “IEEE Guide for Measurement of Impedance and Safety Characteristics of Large, Extended or Interconnected Grounding Systems”, pp.12-17, 1991.
10 최영철, 최종혁, 이복희, 전덕규 “수직 또는 수평으로 매설된 접지전극의 접지임피던스 측정시 보조전극 위치에 따른 전자유도의 영향”, 조명.전기설비학회논문지, Vol. 23, No.8, pp.86-92, 2009.   과학기술학회마을   DOI