Prediction of the force on the dropper according to the pre-sag

사전이도 적용에 따른 드로퍼에 작용하는 하중 예측

  • 이기원 (한국철도기술연구원 집전력연구실) ;
  • 조용현 (한국철도기술연구원 집전력연구실) ;
  • 창상훈 (한국철도기술연구원 집전력연구실) ;
  • 김형철 (한국철도기술연구원 집전력연구실)
  • Published : 2009.05.21


For the improvement of a train speed in the conventional line from overhead system point of view, it is necessary to approach not only in the aspect of the increasement of tension for catenary but the application of a pre-sag. A certain tension acting on a dropper is removed when it is slack by the pantograph passing. Right after the pantograph passes, the dynamic force caused by the mass of contact wire acts on the dropper. If the pre-sag is applied to the catenary, the static force on the dropper is increased. For the assurance of the safety for the dropper, it is necessary to predict the dynamic force. The purpose of this study is to predict and analyze the force on the dropper according to the applied pre-sag.