한전 배전 계통을 이용한 2단장주의 불평형 부하에 따른 중성선 전류의 영향에 관한 연구

A Study on the Effects of Neutral Current by Unbalanced Load in Two Step Type Pole using KEPCO's Distribution System

  • 박건우 (성균관대 대학원 전자전기공학과) ;
  • 서훈철 (기초전력연구원 전력시스템연구실) ;
  • 김철환 (성균관대 정보통신공학부) ;
  • 정창수 (한국전력공사 전자통신처) ;
  • 유연표 (한국전력공사 포항지점 배전운영부) ;
  • 임용훈 (한국전력연구원 전력통신그룹) ;
  • 이원정 (한국전력공사 성서지점 배전운영파트)
  • 발행 : 2007.03.01

초록

The one step type pole and two step type pole are used in KEPCO's distribution system. The neutral current increases in three-phase four-wire distribution system due to unbalanced load. Usually, power line and communication line are installed at contiguity by effect of topography in Korea. To this end, the damages such as electrostatic induction, electromagnetic induction and harmonic induction generated by induced voltage and current are occured in power line and communication line. This paper calculates the neutral current in KEPCO's distribution system using EMTP by composing various simulated conditions. Also, these results are verified by vector analysis.

키워드

참고문헌

  1. J.C. Balda, A.R. Oliva, D.W. McNabb, R.D. Richardson, 'Measurements of Neutral Currets and Voltage On a Distribution Feeder', IEEE Trans. on Power Delivery, Vol. 12. No. 4, October 1997
  2. 서훈철, 권오상, 김철환, 정창수, 유연표 '가공 배전선로 장주의 중성선 전류 계산', Trans, KIEE, Vol 55A, No 7, pp.290-296, Jul 2006
  3. '실배전 계통 모델을 이용한 2단중주 중성선 불평형 전류와 전력유도 상관관계 분석', 한국 전력 공사, 2005. 11
  4. Thomas M. Gruzs, 'A survey of neutral currents in three-phase computer power systems,' IEEE Trans. on Industry Application, Vol. 26, No.4, pp.719-725, 1990 https://doi.org/10.1109/28.55999