Journal of the Korean Institute of Illuminating and Electrical Installation Engineers (조명전기설비학회논문지)

The Korean Institute of IIIuminating and Electrical Installation Engineers (한국조명전기설비학회)
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An Analysis of Potential Interference Effects in the Vicinity of Ground Rod Depending on Frequency of Ground Currents

접지전류의 주파수에 따른 수직 접지전극 주변에서 전위간섭 영향 분석

  • 이복희 (인하대학교 IT공과대학 전기공학부) ;
  • 조용승 (인하대 대학원 전기공학과) ;
  • 최종혁 (인하대 대학원) ;
  • 양순만 (인하대 대학원, 금호산업(주))
  • Received : 2011.10.14
  • Accepted : 2011.10.27
  • Published : 2011.12.30
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Abstract

When the ground current is injected into the adjacent ground electrode, the potential interference is caused between ground electrodes, the ground potential interferences have been largely studied with power frequency fault currents. Many attempts to find the frequency-dependent grounding impedance report that the high frequency grounding impedance is very different with the ground resistance. This paper presents experimental data on the frequency-dependent potential interference effects in the vicinity of ground rod. The ground potential rises around the test ground rod of 4 or 6[m] were measured and discussed. As a result, the ground potential rises and potential interference factor are decreased with decreasing the grounding impedance. It was found that the lowering of grounding impedance is critical to reduce the ground potential interference effects.

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References

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