• 한국철도학회:학술대회논문집
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• 한국철도학회 2008년도 추계학술대회 논문집
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• pp.518-523
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• 2008

경부고속열차(KTX) 차량컴퓨터제어장치(OBCS : On Board Computer System)는 네트워크 통신을 이용하여 차량내 각 종 전장품의 동작상태 감시와 운행명령 및 열차제어, 차량의 유지보수, 승무원의 운전업무를 지원하는 장치로써 KTX의 핵심장치이다. 이 장치는 TGV 제작사양과 프랑스의 고속열차 운영방식에 종속되어 특화된 시스템으로 제작되었으므로 실질적인 기술이전이 어려운 상태이다. 그렇기때문에 KTX 국내도입 후 운영상 요구되는 기능개선 및 자체적인 유지보수, 각 종 전장품(추진제어장치, 보조전원장치, 출입문제어장치 등)의 국산화 교체시 대부분의 인터페이스 신호가 차량컴퓨터제어장치(OBCS)와 연계되어 있어 많은 어려움이 수반되고 있다. 따라서 본 연구에서는 KTX 차량컴퓨터제어장치의 기능분석 및 주변장치(기관사 콘솔, 여객정보시스템, 고장현시장치, 각종 전장품 등)와의 상호 인터페이스 정보분석을 통해 KTX-OBCS 국산화 개발을 함으로써 KTX 운영상 요구되는 기능개선 및 유지보수 효율화에 기여하고, 더 나아가 고속열차제어 및 전장품 분야에서 선진 외국기술의 종속을 탈피하여 기술자립화를 이루고자 한다.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2009년도 춘계학술대회 논문집
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• pp.1164-1171
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• 2009

2004년 4월 우리나라에 고속열차를 운행한지 5년이 되었다. 프랑스 TGV 열차를 한국형 지행과 환경에 최적으로 개량한 열차가 KTX 열차이다. 고속열차에 대한 연구와 개발로 차량의 외형적 장치 설계는 독자적인 설계 능력을 갖추었으나, 고속열차 열차제어진단장치 설계는 모방의 수준에 머물려 있다. KTX의 열차의 진단제어데이터를 분석하기 위해 VME 분석장비를 사용하여 수집하는 방법과 제어데이터구조를 분석하여, 열차제어진단장치에 대한 운용능력과 설계능력을 갖추어야 한다. 다양한 고속열차가 선로에 운용됨에 따라 철도운용자에게 필요한 다양한 열차제어진단에 대한 사전 대비를 함으로서, 고속열차 안전운행과 운용정비 절감을 위해 필요하다. 단일화된 열차제어진단 설계로 한국형고속열차 제작 능력뿐만 아니라, 운용능력 향상으로 고속철도 운영국가로서 위상이 확립되어야 한다.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2008년도 추계학술대회 논문집
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• pp.1157-1162
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• 2008

High speed train system consumes much electric power during running, and generate much EMI (electromagnetic interference) by arc between the pantograph and the trolley line. In this paper, EMI was measured following EN50121-2, 'Railway applications. - Electromagnetic compatibility. (Emission of the whole railway system to the outside world)', from the running high-speed railway (KTX) at 300 km/h speed. Measured results exceed the limit values of EN50121-2 in low frequency band ($9\;kHz{\sim}150\;kHz$), but they did not exceed the limit values in other higher frequency band ($150\;kHz{\sim}1\;GHz$).

• 한국철도학회논문집
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• 제9권5호
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• pp.612-617
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• 2006

As the on-board electric devices determine the performances of vehicles, production of reliable devices is important. To keep the reliability of devices constant, management of performance evaluation of the on-board devices is crucial. Because temperature has a serious effect on failures of the components of the devices, its measurement is the first step for good management. In this study, we described performance characteristics of domestic auxiliary block developed through G7 project. We measured the performances of auxiliary block during test running by the developed on-line measurement system. After we save the input real-time data from each signal of Korean High Speed Train through the network line, we can acquire necessary information through post-processing program. We verify the motor block characteristics of Korean High Speed Train by this system.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2009년도 춘계학술대회 논문집 특별세미나,특별/일반세션
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• pp.241-245
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• 2009

High speed train system generates much EMI (electromagnetic interference) by arc between the pantograph and the trolley line during the running time. EMI from the tilted EMU train system which is similar to HEMU-400X system for 400 km/h speed and with the distributed engines was measured following EN50121-2, 'Railway applications. - Electromagnetic compatibility (Emission of the whole railway system to the outside world)'. Measured EMI values exceed the limiting values of EN50121-2 in high frequency band ($30\;MHz{\sim}1,000\;MHz$), but exceeding frequencies were identified that they are used for mobile communications. Measured EMI values did not exceed the limiting values in other low frequency band between 9 kHz and 30 MHz.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2009년도 제40회 하계학술대회
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• pp.2152_2153
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• 2009

In this study, the dynamic characteristic of a contact wire and pantograph suppling electrical power to high-speed trains are investigated from an electrical response point of view. To analysis power line disturbance by induced contact loss phenomenon for high speed operation, a hardware Simulator which considered contact loss between contact wire and the pantograph as well as contact wire deviation is developed. It is confirmed that a contact wire and pantograph model are necessary for studying the dynamic behavior of the pantograph system. One of the most important needs accompanied by increasing the speed of high-speed train is reduced that an arc phenomenon by loss of contact brings out EMI. In case of a high-speed train using electrical power, as comparison with diesel rolling stock, PLD(Power Line Disturbance) such as harmonic, transient voltage and current, EMI, dummy signal injection etc usually occurs. Throughout experiment, it is verified that an arc phenomenon is brought out for simulator operation and consequently conducted noise is flowed in electric circuit by power line disturbance.

• 전기학회논문지P
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• 제58권4호
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• pp.427-431
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• 2009

In this study, the dynamic characteristic of a contact wire and pantograph suppling electrical power to high-speed trains are investigated from an electrical response point of view. To analysis power line disturbance by induced contact loss phenomenon for high speed operation, a hardware Simulator which considered contact loss between contact wire and the pantograph as well as contact wire deviation is developed. It is confirmed that a contact wire and pantograph model are necessary for studying the dynamic behavior of the pantograph system. One of the most important needs accompanied by increasing the speed of high-speed train is reduced that an arc phenomenon by loss of contact brings out EMI. In case of a high-speed train using electrical power, as comparison with diesel rolling stock, PLD(Power Line Disturbance) such as harmonic, transient voltage and current, EMI(Electromagnetic Interference), dummy signal injection etc usually occurs. Throughout experiment, it is verified that an arc phenomenon is brought out for simulator operation and consequently conducted noise is flowed in electric circuit by power line disturbance.

• 한국전기전자재료학회논문지
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• 제16권12S호
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• pp.1210-1216
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• 2003

Recently, as the road capacity reaches the limit and environmental problems becomes serious, there is gradually increased a need for railroad vehicles that are environment-friendly and have time regularity, reliability, and safety. Accordingly, in addition to conventional railroad vehicles, lots of vehicles are being newly developed. We developed the hardware and software of the measurement system for on-line test and evaluation of korean high speed train. The software controls the hardware of the measurement system and acts as interface between users and the system hardware. In this paper, practical experiment are performed to verify mechanical performance of motor and main transformer for Korean high speed rail. The experimental test carried out by using new temperature measurement method and verify the temperature performance of motor and transformer is verified.

• 조명전기설비학회논문지
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• 제21권6호
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• pp.40-47
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• 2007

고속전철 부하는 동기 전동기를 제어하기 위해 컨버터와 인버터를 포함한 많은 비선형 부하를 가지고 있다. 고조파 측정 결과로 고조파는 시간에 따라 변하는 특성이 관측되었다. 순시치 측정에 의한 고조파 평가는 측정 순간에 따라 고조파가 다를 수 있으므로 모호한 결과를 초래할 수 있다. 시간에 따라 변하는 고조파를 해결하기 위해 쓰이는 가장 보편적인 방법은 누적확률을 사용하는 것이다. 고조파 시뮬레이션은 사례연구 시스템의 전압 및 전류 왜곡을 평가하기 위해 이용되었다. 본 논문에서는 고속전철 부하의 고조파 현장 측정, 국제 고조파 관리 기준인 IEC 61000-3-6과 IEEE Std. 519에 의한 고조파 평가, EDSA 프로그램을 사용한 시뮬레이션을 심도있게 다루고자 한다.

• 한국생산제조학회지
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• 제23권3호
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• pp.310-317
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• 2014

The Next-generation High-speed Rail Technology Development Project was started in 2007 by the Korean Government with the aim of developing the core technologies for a high-speed electric multiple unit (EMU) railway system. This is the first attempt to develop a high-speed EMU railway. High-speed EMU trains have superior acceleration and deceleration compared to push-pull high-speed railways such as KTX(Korean Train eXpress). A prototype train was developed and tested on a high-speed line starting in 2012. The new train must maintain running safety during the test. Generally, the international standard (UIC518) is adopted to evaluate the running safety of trains. This method suggests that the test zone must have over 25 sections, and the length of each section must be 500 m. However, it is difficult to implement these test conditions for a real high-speed line. In this study, we analyzed the running safety using several test section lengths (100 m to 500 m) and compared the results. The results of this study will be used to establish a running safety evaluation method for high-speed EMU railways.