Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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Analysis of DC Traction Stray Current Interference on Buried Pipelines

지하철 누설전류가 도시가스 배관에 미치는 영향 해석

  • Lee H.G. (KERI Underground Systems Group) ;
  • Ha T.H. (KERI Underground Systems Group) ;
  • Ha Y.C. (KERI Underground Systems Group) ;
  • Bae J.H. (KERI Underground Systems Group) ;
  • Kim D.K. (KERI Underground Systems Group)
  • 이현구 (한국전기연구원 지중시스템연구그룹) ;
  • 하태현 (한국전기연구원 지중시스템연구그룹) ;
  • 하윤철 (한국전기연구원 지중시스템연구그룹) ;
  • 배정효 (한국전기연구원 지중시스템연구그룹) ;
  • 김대경 (한국전기연구원 지중시스템연구그룹)
  • Published : 2004.07.14
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Abstract

When an underground pipeline runs parallel with DC traction systems, it suffers from DC traction interference. Because the train is fed by the substation through the overhead wire and return current back to the substation via the rails. If these return rails are poorly insulated from earth, DC current leak into the earth and can be picked up by nearby pipeline. It may bring about large-scale accidents even in cathodically protected systems. In this paper we analyze the cathodic protection systems of buried pipelines and DC traction stray current influence on it using the simulation software CatPro. We can discuss the problems and mitigation of DC traction interference for protected pipeline.

Keywords