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A Study on the Voltage Drop and Earth Leakage Current according to Interval of AT in the AT Feeding Method

AT급전방식에서 AT간격에 따른 전압강하 및 대지누설전류에 대한 연구

  • 김민석 (서울과학기술대학교 철도전문대학원 철도전기신호공학과) ;
  • 최승혁 (서울과학기술대학교 철도전문대학원 철도전기신호공학과) ;
  • 이종우 (서울과학기술대학교 철도전문대학원 철도전기신호공학과)
  • Received : 2011.01.02
  • Accepted : 2011.07.27
  • Published : 2011.09.01

Abstract

AT feeding system of the electric railway system is installed every about 10km at between the feeder and catenary in parallel and the mid-point of the transformer is connected to the rail The supply voltage of this system is doubled than rolling stock voltage. So the voltage drop is smaller than usual. And the other merit of this system is the decreasing inductive disturbance to the communication line because of the reduced current in rail which runs reversed in a point of view of rolling stock. Also, ATP(Auto Transformer Post) is installed to reduce the voltage drop and to mitigate the inductive disturbance, but still now the proper distance between the ATP and AT feeding system is not established which ranges from 2 to 10[km]. The stable result of simulation(which is set that the end of the line AT is installed) to the voltage drop and inductive disturbance can not analyzes the effect to the supply system due to the ATP. This paper analyzes the effect to the system depending on the location of ATP by forecasting the voltage drop and inductive disturbance.

Keywords

References

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