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http://dx.doi.org/10.5762/KAIS.2016.17.9.351

The Improvement of Electrical Point Machine Wiring Set  

Jeong, Rag-Gyo (Metropolitan Transportation Research Center, Korea Railroad Research Institute)
Park, Gun-Won (Dept. of Equipmet, Seoul-Metro)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.17, no.9, 2016 , pp. 351-358 More about this Journal
Abstract
An Electrical Point Machine (NS:New-type Switch), which is equipped and operated at railways in Korea, has been used since the 1960s after being imported from Japan. On the other hand, although the mechanical configuration has improved the position motor control circuit, the electrical connection has not been improved, so NS may have a problem, such as the interlocking system of automatic train operation. In addition, NS is the most vulnerable part in the railway system and a huge train accident may occur due to minor defects. The existing NS wiring set of the circuit controller should be checked only if fixed. Therefore, an excessive inspection time only by a Railroad Signal expert is required. In this paper, the improvement of electrical connection in a NS wiring set, such as the position motor control circuit, was developed and the prototype was installed at Seoul Metro in the distance to go section. The results can be used to help make appropriate adjustments. The improvement of the NS wiring set enhance the maintenance efficiency, passenger service and the stability of the signal system as well as reducing the maintenance cost.
Keywords
Automatic train operation; Distance to go; Electrical point machine(NS: New-type Switch); FT(Fault Tree); Interlocking; Wiring set;
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  • Reference
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