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터널 브래킷을 사용한 가선시스템의 최고속도 예측 및 검토
권삼영(Kwon Sam-Young),이기원(Lee Kiwon),창상훈(Chang Sang Hun),M'hamed Matri 한국철도학회 2000 한국철도학회 학술발표대회논문집 Vol.- No.-
The catenary system supported by the tunnel bracket which has been used uniquely in KNR was selected as the catenary inside narrow existing tunnel in the electrification of Kyeung-Bu Line for operation of Korea High Speed Train(KTX). It was demanded to judge the maximal operable speed of KTX in this catenary system to implement the planning. To do this, the tunnel bracket was firstly tested to obtain the characteristic data. The stiffness of this bracket are computed depending on the location which catenary installed on. Moreover, the catenary using tunnel bracket is modelled numerically respecting the bracket stiffness. Based on these, the dynamics between this catenary and KTX pantograph are simulated with the program developed by ourselves independently. The simulation result are evaluated according to the generally acceptable criteria. Consequently, the maximal operable speed of KTX in the catenary using KNR(Korean National Railroad) tunnel bracket is predicted and some items which are needed to be kept in the processing of implementation are drawn.
전차선로에서의 뇌격에 의한 가공지선과 보안기의 차폐효과
임성정(Seong-Jeong Rim),김재철(Jae-Chul Kim),창상훈(Sang-Hun Chang),정용철(Yong-Chul Chong) 한국철도학회 2000 한국철도학회 학술발표대회논문집 Vol.- No.-
Using the EMTP(Electro Magnetic Transient Program) for the analysis of lightning direct voltage on the railway system, the shielding effects of overhead grounding wire on the railway were studied quantitatively. Installation of overhead ground wire and gap-type arrester such as s-horn provides a 6.6㎸ HV distribution line with good protection effects. Even severe lightning induced voltage were create, 6.6㎸ HV lines can be withstand.
홍세은(Se-eun Hong),한문섭(Mun-seop Han),창상훈(Sang-hun Chang),박종국(Jong-gook Park),양일동(Il-dong Yang) 한국철도학회 2012 한국철도학회 학술발표대회논문집 Vol.2012 No.10
직류전기철도는 수송밀도가 높아 사고가 발생하였을 경우 열차지연 및 수송장애가 발생하여 사회적으로 큰 문제가 된다. 또한 직류급전회로에서 사고가 발생하였을 경우, 고장 점을 도보에 의한 현장순회에 따라 탐색하고 고장복구를 실시하고 있지만 이 방법은 시간이 많이 걸려 신속한 고장복구의 과제가 되고 있다. 이전부터 국외에서 고장점표정 장치의 연구개발이 실시되어 왔지만 현재 국내에서는 실용화되고 있지 않다. 직류급전회로의 고장점표정 방법은 중요한 기술이며, 그 필요성이 높다. 본 연구를 통하여 개발하고자 하는 방법은 급전선로의 양단 변전소의 부하전류를 이용하여 신속하고 정확하게 고장점을 표정할 수 있으며 신속한 유지보수 체계를 통해 열차지연 및 수송장애를 극복할 수 있다. Since DC electric railway has high freight density, it causes train delay and bottleneck transportation from accident and social problems from the failure effect. Also, we have restored fault point on foot when fault occurred. However, this fault localization method requires long time and it becomes obstacle to quick and smart fault restoration. Although research on fault locator has been conducted abroad in advance, this technology is not in practical use. Fault locator for DC power dispatch system is important technology with high necessity. With this developing technology from the research, fault point would be quickly and accurately localized by utilizing load current from substations beside catenary line, and train delay and bottleneck transportation would be conquered by quick maintenance system.