The Transactions of the Korean Institute of Electrical Engineers C (대한전기학회논문지:전기물성ㆍ응용부문C)

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지

Measurements of the Ground Resistance using the Test Current Transition Method in Powered Grounding Systems

측정전류전이법을 이용한 운전중인 접지시스템의 접지저항 측정

  • Published : 2002.08.01
Download PDF
⟨ Previous Next ⟩

Abstract

This paper presents an accurate method for measuring the ground resistance in powered grounding system. Most of substations and electric power equipments are interconnected to an extensive grounding network of overhead ground wires, neutral conductors of transmission lines, cable shields, and etc. The parasitic effects due to circulating ground currents and ground potential rise make a significant error in measuring the ground resistance. The test current transition method was proposed to reduce the effects of stray ground currents, ground potential rise and harmonic components in measurements of the ground resistance for powered grounding systems. The instrumental error of the test current transition method is decreased as the ratio of the test current signal to noise(S/N) increases. It was found from the test results that the proposed measuring method of the ground resistance is more accurate than the conventional fall-of-potential method or low-pass filter method, and the measuring error was less than 3[%]when S/N is 10.

Keywords

References

  1. A. V. Machias, E. N. Dialynas and C. A. Protopapas, 'An Expert System Approach to Designing and Testing Substation Grounding Grids', IEEE Trans., Vol. PD-4, No. 1, pp. 234-240, 1989 https://doi.org/10.1109/61.19209
  2. 이복희 이승칠, 접지의 핵심 기초 기술, 도서출판 義제, p.40, pp. 1-20, 1999
  3. W. C. Boaventura, P. S. A. Rocha and F. C. Dart, 'Testing and Evaluating Grounding Systems of High Voltage Energized Substations : Alternative Approaches', IEEE Trans, Vol. PD-14, No. 3, pp. 923-927, 1999 https://doi.org/10.1109/61.772335
  4. F. P. Dawalibi, F. Donoso, 'Integrated Analysis Software for Grounding, EMF, and EMI', IEEE Computer Applications in Power, Vol. 6, pp. 19-23, 1993 https://doi.org/10.1109/67.207467
  5. P. R. Pillai and E. P. Dick, 'A Review on Testing and Evaluating Substation Grounding Systems', IEEE Trans., Vol. PD-7, No. 1, pp. 53-61, 1992 https://doi.org/10.1109/61.108889
  6. J. E. T. Villas, D. Mukhedkar, V. R. Fernamdes, A. C. Magalhaes, 'Ground Grid Design of a Transition Station System-A Typical Example of Fault Transfer', IEEE Trans., Vol. PD-5, No. 1, ppp, 124-129, 1990 https://doi.org/10.1109/61.107264
  7. IEEE Std 81.2-1991, IEEE Guide for Measurement of Impedance and Safety Characteristics of Large, Extended or Interconnected Grounding System, IEEE Inc., pp. 17-20, 1983
  8. S. T. Sobral, J. J. Santos, D. Mukhedkar, 'A Proposal for Ground Measurement Techniques in Substations Fed Excusively by Power Cables', IEEE Trans., Vol. PD-3, No. 4, pp. 1403-1409, 1988 https://doi.org/10.1109/61.193938
  9. A. P. Sakis Meliopoulos, G. Cokkinides, H. Abdallah, 'A PC Based Impedance Measurement Instrument', IEEE Trans., Vol. PD-8, No. 3, pp. 1095-1106, 1993 https://doi.org/10.1109/61.252636
  10. 이복희, 엄주홍, 이승칠, 김성원, 안창환, '저역필터를 이용한 수변전실 접지저항의 새로운 측정방법', KIEE Trans., Vol. 50C, No. 8, Aug. 2001
  11. J. C. Balda, A. R. Oliva, D. W. McNabb, R. D. Richardson, 'Measurements of Neutral Currents and Voltages on a Distribution Feeder', IEEE Trans., Vol. PD-12, No. 4, pp. 1799-1804, 1997 https://doi.org/10.1109/61.634208