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Keywords: signalling, track circuit, electromagnetic compatibility, electromagnetic interference, impact, train operation, interoperability, reliability.

Summary

The study of railway electromagnetic interference seeks to determine the source of the interference or to ensure the correct operation of the equipment within adverse conditions. The complexity of railway system increases when more electronics are used. However a simple DC track circuit is still used in train detection systems in many countries, including Sweden. Most of the failures reported in the Swedish railway infrastructure are related to the detection system, making this research of interest to the railway community. By searching the Swedish failures report database for the most repetitive and probable causes of failures, the three worst case scenarios were identified: low resistance between the rails, external interference as a lightning and iron-powder-bridges in the insulated joint. They were simulated using the software CST STUDIO SUITE ® (the Computer Simulation Technology Studio Suite), supported by real measurements on site. Measurements followed the current electromagnetic compatibility standards and were used to tune and validate the models, resulting in simulations very close to the real measures.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 104 PROCEEDINGS OF THE SECOND INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE Edited by: J. Pombo Paper 281 Dependability Issues of Track Circuits: A Hybrid Approach E. Rodríguez¹, V. Simón¹, D. Galar¹ and S. Niska² ¹Division of Operation, Maintenance and Acoustics, Luleå University of Technology, Sweden ²Trafikverket, Swedish Transport Administration, Luleå, Sweden doi:10.4203/ccp.104.281 purchase the full-text of this paper Full Bibliographic Reference for this paper , "Dependability Issues of Track Circuits: A Hybrid Approach", in J. Pombo, (Editor), "Proceedings of the Second International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 281, 2014. doi:10.4203/ccp.104.281 Keywords: signalling, track circuit, electromagnetic compatibility, electromagnetic interference, impact, train operation, interoperability, reliability. Summary The study of railway electromagnetic interference seeks to determine the source of the interference or to ensure the correct operation of the equipment within adverse conditions. The complexity of railway system increases when more electronics are used. However a simple DC track circuit is still used in train detection systems in many countries, including Sweden. Most of the failures reported in the Swedish railway infrastructure are related to the detection system, making this research of interest to the railway community. By searching the Swedish failures report database for the most repetitive and probable causes of failures, the three worst case scenarios were identified: low resistance between the rails, external interference as a lightning and iron-powder-bridges in the insulated joint. They were simulated using the software CST STUDIO SUITE ® (the Computer Simulation Technology Studio Suite), supported by real measurements on site. Measurements followed the current electromagnetic compatibility standards and were used to tune and validate the models, resulting in simulations very close to the real measures. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £65 +P&P)
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