• Computational Structural Engineering
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• v.9 no.3
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• pp.54-59
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• 1996

시속 300km로 주행하는 고속철도 열차의 주행안정성 및 승차감을 확보하기 위해서는 열차하중을 고려한 정교한 정적, 동적해석 및 설계가 이루어져야 한다. 따라서 차량과 궤도의 동적상호작용 및 차량과 교량의 동적상호작용, 터널의 미기압 및 공기압, 대단면 터널굴착의 안정성평가, 열차주행에 의한 지반진동의 예측 등에 전산수치해석기법의 활용 및 개발이 현재 활발히 이루어지고 있다. 그러나 고속철도 보유국을 포함한 선진국들에 비하면은 이러한 전산수치해석분야에 있어서 아직도 더 많은 연구 및 개발이 본 공단을 포함하여 학계 및 연구소에서 이루어져야 하겠으며, 본 경부고속철도 건설사업으로 인하여 차량, 전기시설분야의 각종 첨단기술개발 및 발전과 더불어 하부 토목구조물의 건설 및 설계 해석분야에 많은 발전이 기대된다 하겠다.

• Journal of the Korean Society for Railway
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• v.18 no.3
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• pp.203-211
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• 2015

Ride comfort of a vehicle can be utilized to maintain the track geometry and track irregularities because ride comfort of the rolling stock is affected by the characteristics of the vehicle and track. Ride comfort was evaluated according to the measured floor acceleration data of vehicles for a Korean high speed line as well as European high speed lines using Continuous comfort method which can be applied to track maintenance. The exceedance distribution of the ride comfort was quantitatively analyzed by the vehicle speed, the ride comfort of the Korean high speed line was compared with that of European high speed lines. It is shown that the ride comfort of Korean high speed line is better than that of European high speed lines, which indicates that the Korean track geometry and track irregularities are properly maintained.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.12
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• pp.8516-8524
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• 2015

Track irregularities can be evaluated not only directly by track inspection but also indirectly by measurement of carbody accelerations and many researches are being conducted. Carbody accelerations were measured on the Kyeongbu high speed railway and France high speed line to investigate the situation of the track maintenance at Korea high speed line by using indirect method. Digital signal processing for the measured acceleration data were conducted according to UIC518 code. Since the vehicle speed affects the car body acceleration, the lateral and vertical acceleration of the car body were classified according to the vehicle speed and the distribution characteristics of these acceleration were investigated and evaluated by UIC518 criteria. Finally, the running behavior of KTX on Korea high speed railway were compared with that on France. Distribution characteristics of these acceleration were evaluated and discussed in terms of the track maintenance in Korea high speed line.

• The Magazine of the Society of Air-Conditioning and Refrigerating Engineers of Korea
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• v.29 no.10
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• pp.35-39
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• 2000

• Journal of the Korean Professional Engineers Association
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• v.28 no.4
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• pp.41-53
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• 1995

• Journal of the Korean Professional Engineers Association
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• v.28 no.3
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• pp.55-69
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• 1995

• Journal of the Korean Society for Railway
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• v.6 no.2
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• pp.100-107
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• 2003

This paper presents development of train performance simulation(TPS) program to analyze traction performance, braking performance and energy consumption for Korea high speed railway system. The conventional TPS program have some inconveniences such as DOS-based platform, user interface and limited function. The simulation technique model using scenario menu, various analysis function and object-oriented design/programming is presented. This simulation result have been compared with Alstom's for the Seoul-Pusan High Speed Rail Project.

• Journal of the Korean Society for Railway
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• v.15 no.1
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• pp.37-41
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• 2012

Kyung-Bu High Speed Railway is operated in train control system(tcs) of fixed block operated in a way of dividing track circuits into several blocks in accordance with operation circumstances such as rolling stocks, grade, curves and facilities. The TCS of fixed block system refers to a continuous train control system, which transfers operational information such as entry and exit speed, distance-to-go, and deceleration etc. into on-board train control equipment on the basis of block occupancy of a preceding train. It guarantees a safe operation of trains by giving an emergency braking order, in case that a train exceeds an entry and exit speed of a corresponding block. In this paper, we analyze the speed control code deducing in accordance with maximum operation speed and characteristics of rolling stocks by analyzing principles of generation of speed control code allocated in blocks for safe operation, then train operational efficiency was analyzed by means of analysis of operation headway in accordance with the deduced speed control code. This study will be used to design in case of getting an increase in speed for existing high speed line or new high speed line TCS.

• Journal of the Korean Society for Railway
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• v.4 no.4
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• pp.131-137
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• 2001

The dynamic behavior of high speed train is very important because of its safety and passengers' ride comfort. The railway vehicle is composed of many suspension components, such as 1st springs, 1st dampers, 2nd springs and 2nd dampers, that have an influence on the dynamic characteristics of high speed train. Also, the wheel/rail shapes and the track geometry affect the dynamic behavior of high speed train. This paper reviews the dynamic behavior of KHST in the KTX test line. The VAMPIRE program is used for this simulation. The simulation results are within the limits of safety criteria. Thus the KHST can operate safely at 350 km/h in the KTX test line.

• Proceedings of the KIEE Conference
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• summer
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• pp.1388-1390
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• 2004

경부고속철도 급전구간을 운행하는 KTX 고속열차는 싸이리스터 위상제어방식을 사용하는 대용량의 집중부하로 고속열차가 운행될 때 차량에서 발생되는 많은 고조파 전류가 철도급전계통으로 유입된다. 이러한 고조파 전류가 한국전력계통으로 유입되면 한전계통의 전압왜형율을 증가시켜 전력품질을 저하시키게 된다. 이에따라 모든 고속철도 변전소에는 고조파 전류 저감을 위한 필터설비가 설치되어 있다. 필터설비 설치에 따라 고속철도 급전계통으로 유입되는 고조파 전류와 전압왜형율 측정결과로 고조파 저감효과를 보인다.