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A study on efficient operation of DC track circuit

DC 궤도회로의 효율적인 운용방법에 대한 연구

  • Jang, Dongwan (Seoul National University of Science and Technology) ;
  • Jeon, Taehyun (Seoul National University of Science and Technology)
  • 장동완 (서울과학기술대학교 NID융합기술대학원) ;
  • 전태현 (서울과학기술대학교 전기정보공학과)
  • Received : 2013.11.04
  • Accepted : 2013.12.25
  • Published : 2014.02.28

Abstract

A track circuit is a critical piece of equipment that allows the existence of the trains on the track to be detected. Train detection is very important for the signal safety equipment. It allows for the confirmation of a train's location, the locking of switch points, the coordination of safe distance between trains, and the advance notice of a train's arrival. Track circuits can be powered by AC or DC. The DC track circuits are usually used on non-electrified tracks. On these tracks, many signal errors can be caused by lightning or problems with the power source. These problems can also cause damages to the rectifiers which must be repaired or replaced, promptly. This issue is especially problematic in the summer because of the higher frequency of thunderstorms. Issues with track circuits also cause problems for other equipment, such as railroad crossings and switch points. This further disrupts the safe operation of trains. This study aims to enhance maintenance efficiency and improve safety by utilizing parallel operation and multiplexing of a DC track circuit as well as installing an external surge protector. The experimental results on the operation of the proposed method is also presented.

Keywords

References

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