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전기철도 차량 내 변압기의 여자돌입전류 저감에 관한 연구

A Study on the Reduction of Onboard Transformer Inrush Current of Electric Railway

  • 투고 : 2010.09.13
  • 심사 : 2010.11.13
  • 발행 : 2010.12.01

초록

The neutral section on electric railway system is significant sector in order to prevent short circuit of two electric powers. However, while electric trains pass the neutral section, those speed is decreased and the accident of AC electric traction system and the electric train would be occurred. So the countermeasures are urgently needed. The automatic power switching technology system that is current being research and development is system to improve these problems. Because main object of this system is power change using static switch in the neutral section, it's expected to cause a variety of transients. Especially, onboard transformer inrush current for electric railway train can be occurred more than rated current according to switching time. Therefore, the analysis and improvement are needed to ensure the stability of this system. In this paper, we analyze the operating characteristics of the automatic power switching technology system. Especially, it reviews inrush current according to the closing phase angle. And we propose control plan of inrush current considering the case that voltage is maintained due to counter electromotive force and regenerative braking operation of electric railway train. Finally, the proposed control scheme was reviewed using the transient analysis program.

키워드

참고문헌

  1. 한국철도기술연구원, "사구간 통과에 따른 차량주회로 과도특성에 관한 연구" 보고서, 2005
  2. 김정철, 전기철도의 급전시스템과 보호, 기다리, 2004
  3. 안영훈, 강창호, "최대 200km/h로 속도 향상된 Catenary system에 적용한 절연구분장치", 한국철도학회 추계 학술대회 논문집, pp. 541-546, 2003
  4. 한국철도공사, "절연구간 무접점 자동 전원절체 통과시스템 기술개발"보고서, 2010
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  7. Ajiki Kohi 외 4명, "Investigation of Shinkansen Static Changeover Switch Capable of Suppression of Exciting Inrush Current into Transformer on Train", Transactions of the Institute of Electrical Engineers of Japan Vol. 121-D No. 3, pp. 340-346, 2001