• 제목/요약/키워드: railway test line

검색결과 388건 처리시간 0.06초

고속전철에 의한 통신 선로에서의 유도전압 분석 (Induced Voltages on Telecommunication Lines Due to AC High-Speed Electrified Railway System)

  • 오호석;강성용;윤주영;김학철
    • 한국전자파학회논문지
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    • 제20권9호
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    • pp.983-988
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    • 2009
  • 본 논문에서는 고속전철 운행에 따라 인접 통신 선로에서 발생하는 유도전압을 국내 고시에 제시된 측정 회로에 따라 측정하고 유도전압의 특징을 분석하였다. 고속전철 선로와 2 km 병행하는 2개 루트의 시험용 통신선로를 구성하여 이격 거리, 병행 거리에 따른 유도전압을 측정 및 분석하고, 측정 회선 단말 접지 위치의 레일과의 거리에 따라 측정값에 대한 영향 여부를 검토하였다. 또한 1일간 시간에 따른 변화, 요일별 변화 등을 분석하였으며, 유도전압에 포함되어 있는 고조파 성분을 확인하였다. 이론과 같이 이격 거리에 따른 유도전압의 차이를 보였으며, 단말의 접지 위치는 측정값에 큰 영향을 주지 않음을 확인하였다. 또한 특정 시간대 및 특정 날짜에 상대적으로 큰 유도전압이 나타남을 확인하였다.

철도하중에 대한 콘크리트 슬래브궤도의 피로거동에 관한 실험적 연구 (Experimental Investigation on Fatigue Behavior of Concrete Slab Tracks under Railway Loads)

  • 강보순
    • 한국콘크리트학회:학술대회논문집
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    • 한국콘크리트학회 2003년도 가을 학술발표회 논문집
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    • pp.639-642
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    • 2003
  • In this paper, fatigue behavior of concrete slab tracks under railway loads by experimental method is discussed. The addition of steel fibers to concrete mix has been receiving more attention as a way of improving the crack behavior of concrete beams an slabs tacks. This study two objectives: 1) to observe the fatigue behavior of fiber reinforced concrete slab in labor, and 2) to present crack propagation and deflection of fiber reinforced concrete slab track under railway loads in the Waghauser test line. Nine beams, two slabs and one test track were experimentally tested.

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한국형경량전철 시험선의 관리 및 운영 (Management and operation of K-AGT test line)

  • 한석윤;전봉룡;이호용;이안호
    • 한국철도학회:학술대회논문집
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    • 한국철도학회 2006년도 추계학술대회 논문집
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    • pp.964-967
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    • 2006
  • Korea Railroad Research Institute (the following 'KRRI') built AGT test line in Gyeong San-city, Kyongsang-bukdo province, Korea on August, 2004. This test line is exclusively used for the test of the driverless rubber-tired AGT system, and applied with research result of AGT System Development Project like vehicles, power supply, control and signaling, track and infrastructure system. The test line is available for the test of rubber tired AGT system's performance, function, safety. In this paper, we described the operation system of test line for the test of performance, safety, reliability, and also system operation in emergency. Finally we present the operation result of test line.

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도시철도차량의 차륜마모에 따른 횡가속도 패턴분석 (A Study on the Lateral Acceleration Pattern by the shape of Worn Wheel for the Urban Railway Vehicle)

  • 양칠식;임원식;박찬경
    • 한국철도학회:학술대회논문집
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    • 한국철도학회 2006년도 추계학술대회 논문집
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    • pp.66-71
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    • 2006
  • A geometric contact conditions of wheel/rail affect the dynamic behavior of rolling stock. Mechanical force acted on the wheel/rail causes excessive wear and increase the maintenance cost. In this study, we have studied the dynamic behavior of the urban railway vehicle with new and worn wheel by VAMPIRE program. And we have tested the accelerations of wheelset on the conventional line. The results of simulation are compared with the measuring data of field test. It shows that the acceleration of worn wheel is greater than the acceleration of new wheel in the straight track line but on the contrary, the acceleration of new wheel is greater than the acceleration of worn wheel in curved track. That results explain that the new wheel is worn out greater than the worn wheel in curved track line and need to be maintained more seriously when running in curved track line.

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연장급전 전압강하 계산을 위한 전기철도 급전 시뮬레이터의 검증에 관한 연구 (A Study on Verification of PowerRail based on Voltage Drop under Extended Feeding Condition)

  • 김주락
    • 전기학회논문지
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    • 제64권2호
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    • pp.331-337
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    • 2015
  • The power flow analysis of electrified railway is required complicated calculation, because of variable load. Train runs trough rail supplied by electric power therefore, the load value in electrified railway system fluctuates along time. The power flow algorithm in electrified railway system is different from general power system, and the power flow simulation is peformed by the particular simulation software. Powerail is simulation software for analysis of traction power supply system developed by KRRI, in 2008. This consists of load forecasting module, including TPS and time scheduling, and power flow module. This software was verified by measured current under normal feeding condition, however, has not been verified by voltage on the condition of extended feeding. This paper presents the verification of PowerRail based on voltage drop under extended feeding condition. This is performed by comparing simulation result with field test. Field test and simulation is done in commercial railway line.

암과 흙 혼합재료로 이루어진 철도노반의 열차 반복하중 작용에 의한 변형특성 (Deformation Characteristics of Crushed Rock-Soil Mixtures of Railway Subgrade under Train Cyclic Loadings)

  • 김대상;박성용;이용일;조국환
    • 한국철도학회:학술대회논문집
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    • 한국철도학회 2008년도 추계학술대회 논문집
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    • pp.955-963
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    • 2008
  • There are lots of tunnel intervals in the KTX II stage construction line for the linearity of railway line passing mountain region. In order to use the rocks from tunnel excavations, railway subgrades are constructed with crushed rock-soil mixtures. In this study, plain strain test using large scale box was conducted in order to analyze the characteristics of deformation behavior of railway subgrades composed of crushed rock-soil mixtures. The effects of variation of degree of saturation, stress level of applied loadings, and number of loading cycles on the resilient and permanent deformation behavior were analyzed. The results show that degree of saturation have a great effect on the deformation behavior of crushed rock-soil mixtures. The axial strain ranges between $0.1{\sim}0.8%$ with variation of degree of saturation, in assumption that deviatoric stress applied on the subgrade by high-speed train load is 55kPa.

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한국형 고속전철의 기존선 주행 진동가속도 특성 분석 - 곡선 통과속도 중심으로 (Analysis of the Acceleration Characteristics on the Conventional line for Korean High Speed Train- in il point of passing speed on the curve)

  • 김영국;김석원;목진용;박찬경
    • 한국소음진동공학회:학술대회논문집
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    • 한국소음진동공학회 2004년도 춘계학술대회논문집
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    • pp.222-227
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    • 2004
  • Korean High Speed Train(KHST) has been tested on the high speed test line in Osung site, since it was developed through the G7 Project Plan in 2002. It was also tested on the conventional line such as KyongBu and Honan Line to know the possibility of increasing the limited speed for the high speed trains. This paper introduces the method to improve the speed on the conventional line with body lateral acceleration among the several considered issues and explains the parameters related to those analysis, such as the cant deficiency, the radius of curve, speed and etc. When a train pass on the curved track, the lateral accelerations of body are divided into the quasi-static and the maximum accelerations according to the UIC 518 which is the international specification for testing and approval of railway vehicles from the point of view of their dynamic behaviour, especially for safety and ride comfort. This paper shows that it is safe and comfort from the results of test when KHST runs on the conventional line with the curves and proposes that the limited speed of conventional curved line could be changed to a little higher speed if the analysises of other fields are completed.

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경부고속철도 시험선구 고조파 예측에 관한 연구 (A study of the harmonics evaluation in the test track of Korea High Speed Rail)

  • 김길상;오광해;권삼영;이태형
    • 한국철도학회:학술대회논문집
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    • 한국철도학회 1998년도 추계학술대회 논문집
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    • pp.241-248
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    • 1998
  • The purpose of this study is to evaluate the harmonics generated from Korea High Speed Rail's trainset and to analyze the effect on the KEPCO power system. This study focuses on the test track of the high speed rail and analyzes 154㎸ transmission line, scott transformer, autotransformer and 27,5㎸ line. The trainset is modeled as a harmonic source attached to the catenary line of the test track. Then, harmonic distortion is calculated. This distortion is compared with the KEPCO's regulations in relation to harmonic.

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경간형식과 고속열차 판토그라프 접촉력 특성의 상호관계에 대한 시험적 고찰 (An Experimental Study on the Correlation between Span Types and the Contact Force of the Pantograph for High-speed Train)

  • 김영국;목진용;이희성
    • 한국철도학회논문집
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    • 제8권5호
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    • pp.398-404
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    • 2005
  • In this paper, we introduce the on-line test of the current collection characteristics for HSR 350x(Korea High Speed Train project) that have been performed in the Kyoung-bu high-speed line since 2002. Through the analysis of measured data during on-line test, the variation trend of contact force between pantograph and contact wire of catenary according to the span type, the track conditions and driving patterns is reviewed. In order to analyze the variation trend of contact force, we have checked the span type of catenary in KP 24 - 125 out of Kyoung-bu high speed line and obtained the statistical processing result per each span type. This study shows that the track conditions do not affect on the dynamic performance between pantograph and contact wire catenary, and the span type and the driving pattern are important factors in determining the good interaction between them.

표준전동차 10만km 내구도 시험평가 (An evaluation on 100,000km endurance test for the Korean EMU)

  • 정종덕;김원경;한석윤;이호용;안태기;한성호
    • 한국철도학회:학술대회논문집
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    • 한국철도학회 2002년도 춘계학술대회 논문집
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    • pp.336-343
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    • 2002
  • This paper describes the result of endurance test on the Sangju test track. The purpose of the test is to prove the endurance of the Korean EMU for the commercial operation. Test conditions are more severe than actual operation on the commercial line. But endurance test come to an end well without severe problem. Hereafter, Korean EMU will be applied the quality certification of railroad supplies as a testing vehicle and their components will be applied in a new line.

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