• Title/Summary/Keyword: 전차선로

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Analysis of Return Current for Rolling Stock Operation on Electrical Railroads (전기철도 구간에서의 철도차량 운행에 따른 귀선전류 분석)

  • Baek, Jong-Hyen;Kim, Yong-Kyu;Oh, Seh-Chan;Jo, Hyun-Jeong;Lee, Kang-Mi
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.12 no.9
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    • pp.4112-4118
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    • 2011
  • Electrical Railroads provide electric power, which can operate vehicles, via feeder wires. And the supplied current returns to the transformer substation through lines and ground net. The return current, related to signal, power and power line, and track circuit systems, is one of the most important component in the electric railway. Therefore, to prevent system faults and breakdown according to unbalance and overcurrent of the return current, various and detailed analyses for the return current are needed. In the paper, we present measurement and analysis manners in real environment and evaluate its safety. For analysis, we utilize the measured values of return currents measured in track circuits in electric railway. we expect that this research plays a key role to the related fields.

Implementation of Optical-based Measuring Instrument for Overhead Contact Wire in Railway (전기철도 전차선로의 광학기반 형상 검측 하드웨어 구현)

  • Park, Young;Cho, Yong-Hyeon;Park, Hyun-June;Kwon, Sam-Young
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2008.06a
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    • pp.518-518
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    • 2008
  • We propose an optical-based measuring instrument of catenary system in electric railway. This system was made to utilize line scan camera as inspecting system to measure the stagger and height of overhead contact wire in railway and composed with optical type source and FPGA-based image acquisition system with PCI slot. Vision acquisition software has been used for the application to programming interface for image acquisition, display, and storage with a frequency of sampling. The proposed optical-based measuring instrument to measure the contact wire geometry shows promising on-field applications for online condition motoring. Also, this system can be applied to measure the hight and stagger or other geometry of different type of overhead catenary system.

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실 해상모형시험을 이용한 고속 활주정의 선형시험기법 기초연구

  • Jang, Dong-Won;Park, Chung-Han;Jin, Song-Han;Sim, Sang-Mok;Jo, Hyo-Je
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
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    • 2007.12a
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    • pp.34-36
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    • 2007
  • 현재 모형선을 이용한 선형성능 검증방법에는 크게 2가지 방법이 있다. 첫째는 예인수조에서 예인전차를 이용하여 정수중에 배를 예인시켜 그에 따른 저항을 시험하는 방법이 있고, 둘째는 회류수조에서 배를 고정하여 물을 회전시켜 모형선의 저항을 측정하는 방법이 있다. 이와 같은 방법은 저속 및 대형선박을 검증하기 위해 계발된 방법들로 소형 고속어선 및 고속레저선박의 저항성능 평가를 수행하기 어려운 것이 현실이다. 예인전차의 예인속도와 회류수조 물의 유속이 소형 고속어선 및 고속레저선박의 속력에 미치지 못하기 때문이다. 따라서 고속을 요하는 선박의 저항성능 평가를 위해 새로운 방법 연구가 필요하다. 이에 고속선의 저항성능 시험을 위해 실 해상에서 일반 선박을 이용하여 예인하는 방법을 적용하여 저항시험을 수행하였으며 그에 맞는 시스템을 설계하였다.

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Analysis of Communication Characteristics on Contact wire and Messenger wire of Electric Railroad for Power Line Communication (전기 철도의 전력선 통신을 위한 전차선과 조가선의 통신 특성 분석)

  • Lee, Hui-Jun;Ahn, Seung-Ho;Kang, Seung-Wook;Lee, Jong-Gu
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.24 no.10
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    • pp.157-162
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    • 2010
  • Power line communication, using 25[kV] high voltage of railway catenary, is to provide information which is real-time safety information for train operations and train workers in driving. Lots of noise were occupied in the contact wire by electrical and communication equipments. A signal attenuation was caused characteristics of the contact wire and messenger wire. For relaying communications to transmit information using the contact wire, catenary the noise and signal attenuation were investigated. And the final goal of the study was realized to transmit video information by power line communication on electric railway.

Conceptual Design Study on Contact Loss Simulator for a Interface of High-speed Overhead Conductor Rail (고속 강체 전차선로의 인터페이스를 위한 이선현상 모의 시뮬레이터 개념 설계)

  • Jung, No-Geon;Lee, Jae-Bong;Chang, Chin-Young;Kim, Jae-Moon
    • Proceedings of the KIEE Conference
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    • 2015.07a
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    • pp.1579-1580
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    • 2015
  • 철도차량의 동력원은 화석연료를 사용하던 디젤차량에서 최근 고속전철 및 도시철도차량, 경량전철 등 전기를 주 동력원으로 사용되고 있다. 철도차량에 전기를 공급하는 시스템은 일반적으로 개활지 등 지상구간에 적용되고 있는 가공전차선 방식과 지하구간, 터널 등에 적용되고 있는 강체가선방식 그리고 경량전철 등에 채용되고 있는 제 3궤조방식이 있다. 최근에는 일반적으로 지하구간의 가선시스템에 적용되던 T-Bar방식의 강체가선 방식에서 탈피하여 고속주행이 가능한 R-Bar방식의 강체가선 방식에 대한 연구가 많이 이루어지고 있다. 최근까지 지하구간의 터널구조에서 강체전차선로를 급전시스템으로 채택할 경우 열차의 최고속도는 국내의 경우 90km/h, 국외의 경우 160km/h를 넘지 못하는 실정이었다. 그러나 이를 극복한 제품이 개발되어 열차운행 최고속도를 200~250km/h까지 향상시킬 수 있게 되었다. 본 논문에서는 최근 설계속도 250km/h 급 R-bar방식 강체전차선로 인터페이스를 위한 이선현상 모의 시뮬레이터 개념 설계에 관한 연구를 수행하였다. 이를 위해 집전성능과 관계가 있는 전기철도차량 이선현상 요인 및 영향 분석하였으며 강체전차선로 운행에 따른 이선 등으로 인한 영향을 고찰하기 위해 이선 현상 모의 시뮬레이터 개념 설계에 대한 연구를 수행하였다.

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Measured Data of the Contact Wire Uplift Amount at KTX running (KTX 주행시 전차선 압상량 측정 결과)

  • Kwon Sam-Young;Cho Yong-Hyun;Lee Ki-Won;Ahn Young-Hoon
    • Proceedings of the KSR Conference
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    • 2004.10a
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    • pp.1372-1377
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    • 2004
  • The contact wire uplift amount was measured for the conventional and the high speed catenary during KTX dynamic test period. The contact wire uplift amount is considered as a important parameter in determining and designing of the specific catenary. The measurements were conducted in wayside and onboard of KTX through the high speed camera and the current collection video monitoring system installed in KTX roof. This paper describes the measured results.

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Collision Analysis of EMU Carbody against Overhead Line Structure (전차선 지지 구조물에 대한 전동차 차체의 충돌 해석연구)

  • Kim, Jin-Seok;Koo, Jeong-Seo;Kwon, Seok-Jin
    • Proceedings of the KSR Conference
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    • 2006.11b
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    • pp.11-17
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    • 2006
  • In this paper, crashworthiness of EMU carbody against overhead line structure is numerically evaluated. The material of the EMU carbody is made of stainless steel(SS301L). The material of the overhead line structure(a portal-type) is structure steel (SS400). The EMU carbody is numerically analyzed under collision conditions such as upright side-on impact scenario and angled impact scenario to collide against overhead line structure(a portal-type) at 64.6 kph, respectively.

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Development of Mounting Diagram Design Program for 350km/h High Speed Catenary System (최고운행속도 350km/h급 전차선로 장주도 설계프로그램 개발)

  • Chang, Sang-Hoon;Lee, Ki-Won;Jang, Sa-Sul;Lee, Tae-Kwon
    • Proceedings of the KSR Conference
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    • 2011.05a
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    • pp.644-651
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    • 2011
  • This study presents a development of DeCatS(Detail Design of High Speed Catenary System) which is a software to design high speed catenary system automatically. The program is developed by Korea Railroad Research Institute with the support of KHSR. A process of developing it and a comparison with LEXCAT, in order to demonstrate a preciseness of that, were performed. In the program, decision of H-beam, cantilever fitting, management of materials, automatic drawing and etc. according to input conditions can be accomplished. In this study, especially the program algorithm for the decision of mast was introduced.

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Development of an Image Processing Based Method for Dynamic Stagger Extraction of Pantograph-Overhead Contact Line System (영상처리를 통한 팬터그래프-전차선로 동편위 추출 기술 개발)

  • Cho, Chul-Jin;Cho, Yong-Hyeon;Kwon, Sam-Young;Lee, Ki-Won;Jang, Sa-Sool;Ryoo, Hyang-Bok
    • Proceedings of the KSR Conference
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    • 2011.05a
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    • pp.1336-1341
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    • 2011
  • The pantograph-overhead contact line system is an interface that supplies power to high-speed trains used in many countries including Korea. Due to the fact that power is supplied through direct contact between contact wires and contact strips, wear may occur, increasing the possibility of accidents over periods of time. Therefore, there is a need to establish methods of effectively extracting safety related parameters. In this paper, an image processing based method that calculates and draws graphs of a pantograph's dynamic stagger is proposed. To assess reliability, the results were compared with data collected from conventional maintenance vehicles.

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