The Transactions of the Korean Institute of Electrical Engineers A (대한전기학회논문지:전력기술부문A)

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지

Measurement of Resistance of Multi-Grounded System by Ground Current Measurement

접지전류 측정에 의한 다중 접지계통의 접지저항 측정

  • 최종기 (전력연구원 전력계통연구실) ;
  • 안용호 (전력연구원 전력계통연구실) ;
  • 정길조 (전력연구원 전력계통연구실) ;
  • 한병성 (전북대학교 전자정보공학부) ;
  • 김경철 (홍익대학교 전기공학과)
  • Published : 2004.04.01
Download PDF
⟨ Previous Next ⟩

Abstract

Measuring ground resistance has been a popular method of evaluation of the grounding electrode performance. If some portions of grounding electrodes are lost by corrosion, aging or other reasons, consequent deteriotation of the grounding performance would be resulted. It is one of the reasons why it is required to evaluate the performance of grounding systems regularly. However, in case of the electric facilities with multi-grounded system such as power substations with multi-grounded overhead ground wires and/or distribution line neutrals, it is practically difficult to disconnect neutrals or skywires from the substation grounding mesh for the ground resistance measurement. In this paper, a method for the grounding performance measurement of multi-grounded systems, which is based on the measuring ground current distributions, has been proposed. A field test results has shown the validity of the proposed test method.

Keywords

References

  1. H.G.Sarmiento, J.Fortin, D.Mukhedkar, 'Substation ground impedance: comparative field measurement with high and low current injection methods', IEEE Trans. on PAS, Vol. PAS-103, no. 7, July 1984, pp. 1677-1683 https://doi.org/10.1109/TPAS.1984.318667
  2. J.Fortin, H.G.Sarmiento, D.Mukhedkar, 'Field measurement of ground fault current distribution and substation ground impedance at LG-2, Quebec', IEEE Trans. on PD, vol. PWRD-l, no. 3, July 1986, pp. 48-60
  3. Shashi G. Patel, 'A complete field analysis of substation ground grid by applying continuous low voltage fault', IEEE Trans. on PAS, vol. PAS-104, no. 8, Aug. 1985, pp. 2238-2243 https://doi.org/10.1109/TPAS.1985.318804
  4. IEEE guide for measurement of impedance and safety characteristics of large, extended or interconnected grounding systems, IEEE Std 81.2-1991
  5. 한국전력공사, '운전 중인 변전소의 접지계통 진단기술 개발연구 (중간보고서)', 2001. 10