한국조명전기설비학회:학술대회논문집 (Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference)

한국조명전기설비학회 (The Korean Institute of IIIuminating and Electrical Installation Engineers)
권호 표지

심매설 접지전극의 전류인가위치에 따른 과도접지임피던스 특성

Transient impedance characteristics according to the injection position of deep-driven ground rods

  • 이복희 (인하대학교 IT 공과대학 전기공학부) ;
  • 이봉 (인하대학교 IT 공과대학 전기공학부) ;
  • 이수봉 (인하대학교 IT 공과대학 전기공학부) ;
  • 이승주 (인하대학교 IT 공과대학 전기공학부) ;
  • 전병욱 (인하대학교 IT 공과대학 전기공학부) ;
  • 엄주홍 (기초전력연구원) ;
  • 조성철 (기초전력연구원) ;
  • 이태형 (기초전력연구원)
  • 발행 : 2008.05.08
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초록

This paper presents the behaviors of transient and conventional grounding impedances of a deep-driven ground rods associated with the injection point of lightning impulse currents. The transient impedance of deep-driven ground rods under lightning impulse currents were higher than the static ground resistance. The transient grounding impedances strongly depend on the injection point and size of grounding electrodes and the rising time of impulse current. Reduction of ground system inductance is an important factor to lightning surge protection.

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