• Journal of the Korean Society for Railway
• /
• v.19 no.3
• /
• pp.373-379
• /
• 2016

Development of a train wireless signal control system using LTE-R technology is expected to have a great ripple effect to the existing signal control market. To make inroads into the international market, it is an urgent issue to practicalize the train wireless signal control system. Because it will require a huge budget to commercialize the wireless signal control system, it is necessary to analyze the feasibility beforehand, with a consideration of the domestic and foreign marketability and the impact on related industries. This study investigated the effect of the practicalization of train control system on future railway and national industrial sectors. We suggested the establishment of a framework for economic feasibility analysis, one that can provide criteria for opportunistic valuation. We also verified this framework through case analysis.

• Proceedings of the KIEE Conference
• /
• 2011.07a
• /
• pp.2206-2207
• /
• 2011

컴퓨터 통신기술 발달에 따라 철도의 열차제어에 대한 기술도 기존의 궤도회로기반에서 무선통신기반으로 변화되고 있다. 국내에서도 도시철도용 무선통신기반 열차제어시스템의 개발이 진행됨에 따른 개발품의 성능평가에 대한 관심이 높아지고 있다. 따라서 본 논문에서는 새롭게 개발되는 무선통신기반 열차제어시스템의 성능평가를 위해 성능시험 항목의 선정과 현장에서의 시험을 위한 시험선로 지상 및 차상인프라 구축에 대한 기본적인 검토를 기반으로 시험 및 성능평가 시행의 종합기본계획을 수립하는 검토를 수행하였다.

• Proceedings of the KIEE Conference
• /
• 2007.07a
• /
• pp.1205-1206
• /
• 2007

철도시스템에서 열차운행의 안전성과 효율성은 열차제어시스템에 의해 결정된다. 기존의 열차제어는 일반적으로 궤도회로를 기반으로 이루어졌으나, 궤도회로의 문제점으로 부각되는 단락감도, 유지보수 비용증대 등을 해소하기 위해 궤도회로를 대신할 새로운 방법으로 무선통신기술을 기반으로 하는 새로운 형태의 열차제어로 변화를 서두르고 있다. 그러나 이러한 방식으로의 변화는 중저속구간인 도시철도에서는 일부 실용화를 추진하고 있으나 도시간을 이동하는 철도에서는 유럽에서 개념을 정립하여 시험중에 있다. 따라서 본 논문에서는 현 상황에서 도시간 및 고속용 열차제어에 적용하기 위한 무선통신기술에 대하여 선행검토를 수행한다.

• Proceedings of the KSR Conference
• /
• 2006.11b
• /
• pp.796-801
• /
• 2006

Smart열차진로제어시스템은 실시간 열차속도와 열차위치정보를 토대로 진로제어구간을 진입 또는 진출하는 해당 열차의 진로를 제어한다. 현재 운용중인 열차진로제어알고리즘은 궤도회로를 이용해서 검지한 열차점유정보를 사용하고 있으므로, 새로운 개념의 알고리즘개발이 필요하다. 이를 위해서 다양한 형식의 열차가 감속성능을 구현할 수 있는 전동기와 구동장치를 사용하는 모의장치의 개발을 완료하였다. 모의장치는 무선통신기반의 간선철도용 열차진로제어시스템개발을 목적으로 하고 있으나, 알고리즘개발의 효율성과 편리성을 갖추기 위해서 ATS(Automatic Train Supervision), ATC(Automatic Train Control) 및 ATO(Automatic Train Operation) 등의 기능을 구현할 수 있도록 모의장치를 개발하였다. 본 논문에서는 모의장치 구성, 모의장치의 하부장치별 기능 및 각 하부장치에 설치되어 있는 프로그램구성을 다루고 있다.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.11 no.11
• /
• pp.4496-4502
• /
• 2010

In this paper, for the purpose of improving the future domestic train control systems and securing interoperability according to the global development trends of train control systems, we present the test results of communication interfaces to verify the interoperability between CBTC wayside units tentatively installed in Bundang line that is one of the metropolitan area rail transit systems, and the CBTC onboard units developed through the national R/D project. The CBTC onboard equipment developed, has finished its installation and trial tests in the Bundang shunting yard. For the interoperability test, we should make an interface test with wayside equipment tentatively installed in Bundang line. Due to the safety-critical characteristics of train systems, the site test in the section where the wayside equipment is installed, leads to a danger against safety. Therefore, by way of constructing a simulation environment of train control systems, we confirm the T/R data systems of the equipment for interoperability and test the interoperability by applying these systems to developed CBTC onboard equipment.

• Journal of the Korean Society for Railway
• /
• v.19 no.6
• /
• pp.736-743
• /
• 2016

In accordance with the trend of higher speed and automation, the Train Control System is building on the technology of control methods using radio in the technology of exchanging information by wire, toward a wireless communication method that will be applied using LTE-R radio communication technology with $4^{th}$ generation LTE mobile communication a $2^{nd}$ generation GSM-R. Therefore, a standard specification suitable for the Korea Radio based Train Control System-2(below KRTCS-2) for the 350km/h class using wireless communication is created; a prototype based on the standard specification is installed on a high-speed train and is installed on a test section(Ik san-Jeong eup) on the Honam high speed line to ensure the reliability and safety of the standard specifications, which are verified through various performance tests. In the future, the standard specification that has been established as a national railway standard, and the standard specifications will be commercialized by applying the train control system to conventional and High speed railway lines.

• Proceedings of the KIPE Conference
• /
• 2019.11a
• /
• pp.156-157
• /
• 2019

경량전철과 같은 대용량 전력 시스템에 무선전력전송 기술을 적용할 때 전력변환장치의 병렬 운전은 필수적이다. 병렬 연결된 전력변환장치의 경우 출력이 공통으로 연결되어 전력을 공급하게 되는데, 이 때 집전 컨버터의 부하균등제어는 각각의 집전 컨버터의 부하 불균형을 막아줌으로써 집전 컨버터의 수명과 효율이 감소하는 것을 막아준다. 본 논문에서는 부하균등제어방법을 적용한 무선 경량전철 시스템을 통해 기존에 제안된 제어기법을 적용하여 검증하였다. 실증시험의 경우 경산에 위치한 한국철도기술연구원 경량전철시험선의 시험용 경량전철을 두 개의 역사를 반복하여 셔틀 운행하여 최대 400kW의 전력을 두 개의 집전 장치가 전력을 균등하게 공급하는 것을 확인 및 분석하여 논문의 타당성을 검증하였다.

• Journal of the Korean Society for Railway
• /
• v.20 no.5
• /
• pp.602-611
• /
• 2017

In railway systems, the exchange of information between running trains and wayside equipment is a very important role in various applications such as position detection and train control. Track circuits have been used as the medium for information transmission between trains and wayside. However, track circuits must be installed continuously along the track on the ground, resulting in an inevitable increase in installation and maintenance costs. One of the most promising solutions to reduce these costs is to mix continuous information transmission (via wireless communication) and discontinuous information transmission (via transponder). In this study, we designed antennas of railway high-speed transponder readers and tags for wireless power transmission, which can be used to transmit information from ground to high-speed trains with a maximum speed of 400km/h. We also verified system performance through computational simulation and prototyping.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
• /
• 2009.06a
• /
• pp.266-266
• /
• 2009

This paper describes important parameters used to evaluate the insulation performance of power supply components in metro substations. For online fault diagnosis of power supply components, we have developed a new remote condition monitoring system using wireless technology. Our developed system can continuously monitor electric power equipment such as transformers, circuit brakers, and rectifiers and have powerful wireless networking functions.

• Proceedings of the KSR Conference
• /
• 2008.06a
• /
• pp.1209-1212
• /
• 2008

The high-speed EMU is assembled with distributed EMI sources. Therefore, it contains more electromagnetic sources nearby the distributed victims than the existing concentrated traction system. The electromagnetic sources and victims are identified in this research, and the methodology how to handle EMI/EMS/EMC of the high-speed EMU will be developed for safer operation. It includes measurement method, safety standards of control units and others, and performance evaluations of the firstly developed trial products for the EMU. Also influences by modern telecommunication equipments and effect of PLD(power line disturbance) are to be surveyed in this research.