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윤용기(Yong-Ki Yoon),오세찬(Seh-Chan Oh),이강미(Kang-Mi Lee),조현정(Hyun-Jeong Jo),김용규(Yong-Kyu Kim) 한국철도학회 2011 한국철도학회 학술발표대회논문집 Vol.2011 No.5
The development of train control system shall operate a series of processes like system designing, system production and system performance evaluation as a result of various requirements analysis presented in operation rules, operating guidelines for railway organizations etc, notified by the nation. Therefore, considering operation conditions, operation plan, linkage to railway network etc, the major document like system functional specifications, system development specifications, system test plans etc must be drawn up. In this paper we classify system operating scenarios required to prepare for system standard specification and system performance evaluation report of CBTC system for urban subways supporting unmanned automatic operation, and adjust each of the operating status.
Use Case를 활용한 열차제어시스템 기능요구사양서 개발
윤용기(Yong-Ki Yoon),홍진기(Jin-Ki Hong),김용규(Yong-Kyu Kim) 대한전기학회 2009 대한전기학회 학술대회 논문집 Vol.2009 No.7
A train control system(TCS) becomes a large scale and complex as other computer based control systems. So, it is necessary to manage rigorously system requirements specification of the train control system at the early phase. This paper describes Use Cases and activity diagrams of the TCS functions requirements of TCS. Basic functions of the train control system suggested refer to IEC 62290-1. And the basic functions includes train operation without a driver.
윤용기(Yong-Ki Yoon),정락교(Rag-Gyo Jeong),김채덕(Chae-Duck Kim) 한국철도학회 2011 한국철도학회 학술발표대회논문집 Vol.2011 No.5
ATS(Automatic Train Stop)s are is effected by track environment, signal distance and train braking distance. So onboard signaling systems such as ATP(Automatic Train Protection) are installed on conventional lines by some train operation companies. With the mixed signalling, the onboard signaling system is overlaid on a conventional line with ATS, it is possible to run the line with conventional trains and ATP trains and to use the advantages of ATP(higher speed or more trains on the line). This paper includes guidelines a mixed signalling(ETCS and ATS) system architecture, operation concepts and infill balise installation.
고속철도 신호기계실의 접지전류 진단 및 개선방안에 관한 연구
윤용기(Yong-Ki Yoon),김성진(Sung-Jin Kim),고경준(Kyeong-Jun Ko),박채옥(Chae-Ok Park),김용규(Yong-Kyu Kim) 대한전기학회 2021 전기학회논문지 Vol.70 No.10
Through the construction of high-speed railways and the electrification projects, the railway ground was switched to the common grounding method with the individual(or independent) grounding method. The common grounding method can eliminate the potential difference between the equipment connected to the common grounding line, but the line is used for the path which the return current of a train flows. As a result, it has been confirmed that the impulse surge current invades the signal machine room through the ground wires of the track circuit cable that connects the track circuit devices in the field and the transmitter and receiver in the signal machine room. It was also confirmed that the grounding current that entered the signal machine room affects the grounding current of other equipment in the room. The grounding system inside the signal machine room consisted of the common grounding line buried along the track and a steel frame of the building structure, but the steel frame grounding of the building structure was used as a path for another impulse surge current to enter the room. The ground current that entered the signal machine room continued to adversely affect certain equipment in the machine room, causing the equipment to malfunction or eventually burn out. Therefore, in this paper, we analyze the state of the ground current in the signal machine room and present measures to prevent the impulse surge current from entering the room and suppress the generation of ground circulating current in the room.