• The Science & Technology
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• no.9 s.436
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• pp.54-55
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• 2005

• Proceedings of the Korean Society for Rock Mechanics Conference
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• 1995.03a
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• pp.56-66
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• 1995

산업발전과 국민경제의 활성화로 인하여 차량이 급격히 증가함에 따라 차량으로 인한 소음, 환경공해와 더불어 교통체증 등 부작용적인 요소가 많이 나타나게 되었다. 이에 따라 대중교통수단을 지하철로 대체하자는 요구가 증가하게 되었고 이와 더불어 지하공간에 대한 관심이 높아지게 되었다. (중략)

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 1997.04a
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• pp.354-361
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• 1997

본 연구에서는 우선적으로 수도권 대량운송 수단인 지하철 전동차의 진동을 측정하고 인체에 미치는 영향을 평가하였으며 전동차의 진동특성이 인체 각 부위에 전달되는 형태를 분석.평가함으로써 승객과 승무원의 승차감 및 작업환경 향상은 물론 차후 개발되는 고속전철 및 비접지 차량(zero-ground pressure vehicle) 등의 개발에 필요한 기초자료를 제공하고자 한다.

• KIPE Magazine
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• v.14 no.5
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• pp.25-30
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• 2009

현대중공업은 철도차량 전장품 분야에서 주변압기, 추진제어장치, 보조전원장치, 배터리 충전기 등 다양한 제품의 개발에 노력을 기울여 관련 산업 및 기술 발전에 기여해 왔다. 특히 전동차용 추진제어장치는 국내 최초로 국산화 및 상용화에 성공하여 광주지하철과 대전지하철에 납품한 실적을 가지고 있으며 최근에는 고속열차용 주전력변환장치를 세계에서 네 번째로 개발 및 상용화 하여 신규 고속열차인 KTX-II에 적용하였다. 본 논문에서는 고속열차용 추진제어장치의 기술 동향과 추진제어 장치의 설계 및 제작에 활용된 전력전자 기술에 대한 소개를 하고자 한다.

• The Magazine of the Society of Air-Conditioning and Refrigerating Engineers of Korea
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• v.28 no.6
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• pp.425-432
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• 1999

국내의 경우 소방시설을 설치하여야 할 소방대상물과 그 설치 및 유지에 관한 기준은 소방법에서 정하고 있으며, 그 내용은 표 1과 같다. 지하철과 같은 궤도차량용 터널인 경우 소방법 상의 시설물에 대한 규정을 두고 있지 않다. 따라서 화재가 발생할 경우 피난, 구조 및 소화활동 등이 적절히 고려되지 않은 상태에서 팬의 제원과 성능이 결정되고 있다. 적절한 환기설비를 갖추지 않는 경우에 화재발생시 대형 인명사고가 발생할 가능성이 높다.

• The Transactions of The Korean Institute of Electrical Engineers
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• v.56 no.1
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• pp.100-105
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• 2007

Signalling equipments at railroad sites are widely exposed to high voltage lightning surges. This paper presents a lightning protection system for the signalling equipments at subway car depots. The main features of the system are as follows : (1)the common grounding system between power system grounds and the signaling system grounds, (2)physical and chemical methods to reduce grounding resistivity, (3)rearrangement of lightning rods based on the rolling bal1 theory, (4)equi-potential bonding networks to minimize the potential differences between the equipments grounds. The system has been constructed at six subway car depots in Seoul metropolitan area and it is measured that the grounding resistivity are reduced to 0.266 ohms and the potential differences between devices are reduced to a negligible quantity. After the construction of the systems, it has not been reported the break-down of the signalling equipments caused by lighting surges.

• Proceedings of the KIPE Conference
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• 2007.07a
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• pp.482-484
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• 2007

철도차량이 운행될 때 회생제동 구간에서는 회생에너지가 발생한다. 1500[V] DC급전시스템에서 회생된 에너지는 가선 전압을 상승시킨다. 상승된 가선전압은 급전시스템에 악영향을 주기 때문에 회생에너지를 활용하는 방법을 이용하여 가선전압을 안정화 한다. 회생에너지 활용방법의 하나인 회생에너지 저장 시스템을 적용할 때 고려해야 될 사항은 회생에너지의 발생양이다. 회생에너지의 양이 적어 활용가치가 떨어지는 구간에서는 적용하지 않기 때문에 회생량에 대한 사전 정보가 필요하다. 회생에너지의 양은 실측을 통해 얻을 수 있지만 측정을 위한 시간이나 고가의 장비를 사용해야하는 단점이 있다. 본 논문에서는 회생에너지 예측이 가능한 직류지하철 시스템의 모델링을 통해 실측시 발생하는 시간 및 비용적인 문제점을 해결할 수 있다. 회생에너지의 예측은 시뮬레이터를 이용하여 구배 및 곡선, 차량 데이터 등의 운전특성을 바탕으로 이루어진다.

• Journal of Korean Society of Transportation
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• v.19 no.5
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• pp.119-134
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• 2001

This paper proposed a dynamic transit vehicle simulation model and a dynamic transit passengers simulation model, which can simultaneously simulate the transit vehicles and passengers traveling on a transit network, and also developed an algorithm of dynamic departure time choice model based on individual passenger. The proposed model assumes that each passenger's behavior is heterogeneous based on stochastic process by relaxing the assumption of homogeneity among passengers and travelers have imperfect information and bounded rationality to more actually represent and to simulate each passenger's behavior. The proposed model integrated a inference and preference reforming procedure into the learning and decision making process in order to describe and to analyze the departure time choices of transit passengers. To analyze and evaluate the model an example transit line heading for work place was used. Numerical results indicated that in the model based on heterogeneous passengers the travelers' preference influenced more seriously on the departure time choice behavior, while in the model based on homogeneous passengers it does not. The results based on homogeneous passengers seemed to be unrealistic in the view of rational behavior. These results imply that the aggregated travel demand models such as the traditional network assignment models based on user equilibrium, assuming perfect information on the network, homogeneity and rationality, might be different from the real dynamic travel demand patterns occurred on actual network.

• Journal of the Korean Society of Hazard Mitigation
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• v.10 no.5
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• pp.1-7
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• 2010

Since subway fire disaster at Daegu, Korea smoke control system and passengers evacuation distance has been focused to reform. Existing smoke control facilities need to expand volume of ventilation capacity however, the complicate subway station structure can hardly react dispersion of smokes from massive subway cabin fire. Smoke flow at platform level move upward thought vertical stairway and passengers evacuation goes with same direction. The victims of evacuees from subway station fire mainly due to exposure of heat radiation and smoke. The study demonstration the effect of downward evacuates stairway system by separating evacuation route to smoke movement pass way including saving times of evacuation.

• Journal of the Society of Disaster Information
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• v.17 no.4
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• pp.733-746
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• 2021

Purpose: This study was conducted for the purpose of selecting important events from among various events that may pose a risk to railway passengers. For this purpose, opinions of various railroad vehicle passengers and railway operator workers were investigated and analyzed. Method: The survey was conducted on 1,000 men and women in their 20s and 60s and 429 workers at 11 company across the country. A survey was conducted on the dangerous situations that may occur in subways, general railroads and high-speed rail vehicles targeting passengers. For railway operator workers, the questionnaire is limited to subway vehicles. Result: Among the passenger risk factors(abnormal behavior and dangerous situations) selected based on the frequency and importance of occurrence of passenger risk factors, the main risk factors are selected 'car door jamming', 'sexual harassment', 'intoxicating behavior', 'fighting' /assault', 'wandering around', and 'not wearing a mask'. Conclusion: The major risk factors affecting passengers were selected by surveying passengers and railway operators. we plan to develop a CCTV detection system with AI technology that can quickly and continuously detect the major risk factors of railway vehicles selected as a result of this study.