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Effect Analysis of Classical Line TI-21 type Audio Frequency Track Circuit from KTX Sancheon Return Current Harmonics

KTX산천 귀선전류고조파가 일반선 TI-21형 AF궤도회로에 미치는 영향분석

Choi, Jae Sik;Kim, Hie Sik;Park, Ju Hun;Kim, Bun Gon
최재식;김희식;박주훈;김범곤

  • Received : 2014.05.29
  • Accepted : 2015.12.28
  • Published : 2016.02.29

Abstract

The power transformation system of High Speed rolling stocks like KTX-Sancheon has shown excellent control capacities in the areas of riding comfortability, switching efficiency, safety and energy consumption due to technical developments in power-electronics, high speed & large scale integrated semiconductors and microprocessors. However, harmonics from IGBT, a high speed switching device used in the Convertor & Invertor equipment of rolling stocks have given rise to various problems in transformer substations, signaling systems, data transmission systems and facility monitoring systems. Especially, TI21 non-insulated track circuits have malfunctioned due to the influence of returning current harmonics which were generated at around of integer times of the number of power transformation equipment in the frequency domain. This paper, measures and analyzes various schemes to analyze the traveling path of the returning current harmonics generated due to the relationship between the rolling stocks and track circuits on site. Ultimately, theseschemes will be used to design high speed rolling stocks, AF track circuits and a common grounding network.

Keywords

KTX-Sancheon;AF Track circuit(TI-21);Return current harmonics;IGBT

References

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