• Title/Summary/Keyword: High speed railway

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The opening of Gyeongbu high-speed railway project phase II (between Daegu and Busan) (기획특집: 경부고속철도 2단계사업 (대구~부산)개통)

  • Rim, Hyoung-Gyu
    • Journal of the Korean Professional Engineers Association
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    • v.43 no.6
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    • pp.27-30
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    • 2010
  • Gyeongbu high-speed railway project which comprises the construction of the new line with 417.5km between Seoul and Busan is one of the biggest national projects with approx. 20-trillion-won project cost. The construction was started in June 1992 and afterward phase I (between Seoul and Daegu) was opened in April 2004 and phase II (between Daegu and Busan, 169.5km) is scheduled for opening in the end of October 2010. It is assured that the opening of the entire sections of Gyeongbu high-speed railway will significantly increase productivity and efficiency by improving the land utilization with the promotion of personal and material exchanges induced by the reduction of travel time between regions. Especially, Gyeongbu high-speed railway will be the opportunity to boost speed-up of Korea railway.

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Characteristics of Track and Train Behaviors on High-Speed Railway Bridge/Earthwork Transiton Zone (고속철도 교량/토공 접속부에서의 궤도 및 차량 거동 특성)

  • Lee, Il-Wha;Kang, Yun-Suk;Kim, Eun;Son, Ki-Jun;Park, Chan-Kyoung
    • Proceedings of the KSR Conference
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    • 2003.10b
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    • pp.129-134
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    • 2003
  • It is very important to pay careful attention to construction of bridge/earthwork transition zone for high-speed railway. The transition zone of the railway is the section which roadbed stiffness is suddenly varied. Differences in stiffness have dynamic effects and these increase the forces in the track and the extent of deformation. An abrupt change of stiffness across two adjacent track portions cause irregular settlement of roadbed, track irregularity, lack of girder bending moment and reduction of lateral resistance. Especially on high-speed railway, track irregularity of transition zone cause sincere effect to track stability and train safety. And so continuous maintenance is needed. To verify this effect and to improve transiton zone capacity, In situ test, track irregularity and train acceleration test were performed on high-speed railway bridge/earthwork Transiton Zone.

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Development of a Measurement System Development for On-Line Testing of High Speed Railway (고속철도 시운전시험 계측시스템 개발에 관한 연구)

  • 김석원;김영국;한영재;박찬경;김진환;백광선
    • Journal of the Korean Society for Railway
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    • v.5 no.3
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    • pp.158-166
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    • 2002
  • In this paper, we introduce the software and hardware of the measurement system for on-line testing and evaluation of high speed railway. The test items focus on the verification of the performance and acquirement of the technical data of the high speed railway system. The software controls the hardware of the measurement system, perform the analysis and calculation of measurement data and acts as interface between users and the system hardware. For this purpose, three programs a measuring program, a monitoring program and post-processing program are developed. The detailed test scenario is in the process of development to closely follow the process of development and design of the system.

Design of the Current and Speed Controller for the IPMSM based High Speed Railway Traction System (IPMSM이 적용된 차세대 고속철도 견인시스템의 전류 및 속도 제어기 설계)

  • Yi, Du-Hee;Jin, Kang-Hwan;Kwon, Soon-Hwan;Kim, Sung-Je;Kim, Yoon-Ho
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.24 no.8
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    • pp.70-77
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    • 2010
  • This paper presents the current and speed controller design procedure and their performance for the IPMSM based next generation high speed railway traction system. The next generation high speed railway system is a power distributed type and uses vector control method for a motor speed control. Since the speed and current controller gains of the vector control system directly affects to the transient characteristics and speed control capability, the systematic design of the controllers are required. In this paper the controllers are designed using the IPMSM based next generation high speed railway system parameters. Simulation programs based on Matlab/Simulink is developed. Finally the controller characteristics are analyzed by the simulation results.

Review on Environment Noise Prediction Methods Emitted by High Speed Trains (고속철도 환경소음 예측 모델 고찰)

  • Cho, Dae-Seung;Jeng, Hong-Gu;Cho, Jun-Ho;Jang, Kang-Seok;Yoon, Jae-Won
    • Proceedings of the KSR Conference
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    • 2011.10a
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    • pp.2852-2859
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    • 2011
  • Planning and construction of railway for high speed trains up to 400 km/h are recently driven in Korea. High speed train is one of the environment-friendly fastest mass transportation means but its noise generated by rolling, traction and aerodynamic mechanism can cause public complaints of residents nearby railways. To cost-effectively prevent the troublesome noise in a railway planning stage, the rational railway noise prediction method considering the characteristics of trains as well as railway structures should be required but it is difficult to find an authentic method for Korean high speed trains such as KTX and KTX-II. In this study, recent railway noise prediction methods developed by EU countries are introduced and discussed for consulting before setting the framework of our own railway noise prediction model emitted by Korean high speed trains over 250 km/h. Especially, the new Schall 03 model (2006) developed by Germany and IMAGINE model (2007) suggested by an EU framework research project are intensively reviewed. In addition, research items required for the development of our own model are suggested.

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Study on the Establishment of Rail Grinding Criteria of High-Speed Railway Lines Considering the KTX Operation Circumstances (KTX 운행현황을 고려한 고속선 레일 연마 기준 정립에 대한 연구)

  • Kim, Man-Cheol;Kang, Tae-Ku
    • Proceedings of the KSR Conference
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    • 2007.11a
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    • pp.377-385
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    • 2007
  • The importance of maintenance of rail surface defects is increasing more according to the KTX operation. That is because during high speed operation of rolling stock, rail surface defects may cause shortened fatigue life of rail, acceleration of track degradation and reduced ride comfort. The paper was intended to study the establishment of rail grinding criteria of high-speed railway lines considering the KTX operation circumstances. For this, the specimens of UIC 60 rail on Kyeong-Bu high-speed operation lines were collected and they were analyzed for metallographic structure and tested for the hardness. By analyzing the test results to the factors affecting the RCF causing the defects of rail surface, the study suggested the rail grinding criteria of the domestic high speed railway lines. As the factors affecting RCF, passing tonnage, running speed and track condition are considered.

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A Study of Estimation of Damping Ratio for Railway Bridges (철도교량의 감쇠비 추정에 관한 연구)

  • Yoon, Hye-Jin;Chin, Won-Jong;Choi, Eun-Suk;Kang, Jae-Yoon;Kwark, Jong-Won;Kim, Byung-Suk
    • Proceedings of the KSR Conference
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    • 2011.10a
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    • pp.2430-2434
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    • 2011
  • Dynamic response is an important consideration because of the possibility of resonance according to KTX running over a railway bridges. When KTX runs over the bridge at critical speed, dynamic response is very depending on damping ratio. Current damping ratio for design of high-speed railway bridges adopted EUROCODE without verification of domestic railway bridges. The purpose of this study is to obtain the coherent damping ratio of high-speed railway bridges. Free vibration signal after KTX runs over a high-speed railway bridge was applied. The representative value from distribution of damping ratio was considered.

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Conceptual Design of Train System for Parcel Service of High Speed Railway (소화물 고속수송을 위한 철도차량 시설계획)

  • Kim Hyun-Woong
    • Proceedings of the KSR Conference
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    • 2005.05a
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    • pp.1105-1108
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    • 2005
  • In oder to develope a train system for parcel service of high speed railway, which had been proposed for the operation of a high speed train, its conceptual design was build. Through this system, we are able to expect the fulfillment of customer needs for high speed rail market segments, and enhancement for cost-effective rail network operation of the mixed traffic on infrastructure cost-reduction in national logistics.

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Configuration of Driver's Desk System for Korea High Speed Railways (고속전철용 Driver's Desk 시스템 구성)

  • Jeon, J.W.;Lee, J.H.;Kim, Y.J.
    • Proceedings of the KIEE Conference
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    • 1999.07a
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    • pp.483-485
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    • 1999
  • Recently, distributed control network system has been widely applied to on-board control system than conventional relay logic with control wire. This paper presents two configuration of driver's desk system using TCN(Train Communication Network). One is configured with TCN, the other is partial adoption of TCN.

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A Study of RFID System Enable to High Speed Recognition (고속인식이 가능한 무선인식 시스템에 관한 연구)

  • 윤상문;백선기;김윤집;박면규;이기서
    • Proceedings of the KSR Conference
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    • 2002.05a
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    • pp.522-529
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    • 2002
  • In this Paper, it has a proposal of the RFID(RFID : Radio Frequency Identification) system for high-speed recognition between the tag attached a mobile object moving high-speed and the static reader. It used 13.56MHz frequency at ISM band, and designed a reader in order to recognize a mobile object moving high-speed. It will be expected that RFID system enables a smooth railway signal control applying in railway system through the cyclic loop antenna.

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