The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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A Study on Reliability Analysis of Electric Railway Catenary System using FMECA

FMECA를 통한 전차선로 가선시스템의 신뢰도 분석에 관한 연구

  • Youn, Eung-Kyu (Dept. of Railway Electrical and Signaling Engineering, Graduate School of Railway, Seoul National University of Science & Technology) ;
  • Choi, Kyu-Hyoung (Dept. of Railway Electrical and Signaling Engineering, Seoul National University of Science & Technology)
  • Received : 2015.07.21
  • Accepted : 2015.10.27
  • Published : 2015.11.01
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Abstract

The reliability of catenary system is very important for uninterrupted train operation as it supplies electric power to train without redundant facilities. This paper provides a systematic approach to the reliability analysis of the catenary system based on FMECA procedures defined by global standards such as MIL Std 1692a and IEC 60812. Field failure data collected from the operation and maintenance of high-speed railway catenary system for 9 years are used to derive critical failure modes and to evaluate the criticality of the failure modes. Evaluation of the criticality are carried out by quantitative procedures defined by MIL Std 1692a and by criticality matrix defined by IEC 60812. FMECA results suggests that three critical failure modes should be checked carefully during maintenance work, which include strand break of dropper and voltage equalizing wire, power supply failure of feeder. Maintenance procedure of catenary system in order of importance is suggested too. These results can be applied to maintenance planning and design of catenary system to improve the reliability of electric railway system.

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