• The Safety technology
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• no.161
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• pp.15-17
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• 2011

한전산업개발(주)은 1992년부터 전국 발전소 석탄취급설비 운전업무를 시작한 이래 회처리 설비 운전, 진용철도, 운영, 석탄취급설비 정비에 이르기까지 다양한 업무를 담당하고 있다. 오랜 Know-how와 축적된 기술경험을 바탕으로 1998년 국내 최초로 탈황설비 운전을 수행하는 등 지금까지 환경친화산업을 펼쳐나가는 전문회사로 국가 기간산업에 일익을 담당하고 있다. 동양의 나폴리라 불리우는 전남 여수시에 소재한 한전산업개발 호남사업소(소장 최환호)도 호남화력 발전처 내에 위치하면서 여수국가 산업단지와 인근지역에 안정적인 전력을 공급하는데 중요한 역할을 담당하고 있다.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2014.04a
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• pp.482-484
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• 2014

국내의 슬라브도상, 자갈도상의 소음현안에 부합하여 소음저감설계 및 저감장치와 저감구조를 개바할 수 있는 합리적인 소음계산 및 영향인자 규명 모델을 현 모델과 더불어 발전시키고자 하며, 그의 한 예로 고속철도의 통과소음 측정 및 분석결과와 소음원 기여도 기술을 이용한 분석결과를 통하여 레일소음의 특성을 고찰하였다.

• Journal of the Korean Society for Railway
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• v.20 no.2
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• pp.288-298
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• 2017

The system of high-speed and conventional railway vehicles is diversified, and significant technological development in performance has been achieved. This study analyzed the modal change characteristics; furthermore, it estimated the value of travel time by improving the travel time and cost for the passenger's perception of railway. In this study, we formulate a mode choice model for passengers and compare it with the mixed logit model which reflects individual taste variation. In addition, the validity of the analysis is presented through an estimation the value of travel time using the derived model. For this purpose, a stated preference survey was conducted with 510 people using public transportation. The benefits of time-saving can be accurately determined by estimating the value of time spent on the railway. Appropriate fares for public transportation can also be estimated.

• Proceedings of the KIEE Conference
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• 2007.10a
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• pp.355-356
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• 2007

21세기는 한국 철도의 르네상스시대라고 부르고 있다. 이는 자동차와 비행기 등 다른 교통수단에 의해 낙후되어있던 철도가 다시 안전하면서도 정확한 운송시간 등으로 그 경쟁력을 확보해가고 있으며 때를 같이하여 고속철도의 개통을 앞두고 있기 때문이다. 이러한 철도의 경쟁력을 강화하는데 크게 기여한 부분 중 하나가 신호 보안장치 즉 열차제어장치의 발전에 있다고 하겠다. 하지만 열차를 제어하기 위해선 실시간격으로 열차의 절대 위치를 알아야만 하는 문제점이 있다. 이를 비교적 쉽게 극복할 수 있는 방법 중 하나가 인공위성을 이용한 통신기술을 이용하는 것이다. 이는 이미 다른 분야에서는 상용화되어 서비스가 이루어지고 있는 GPS(Global Positioning System)이다. 본 논문에서는 열차의 절대 위치를 GPS(Global position system)를 이용하여 구해 보고자 한다. 이를 위해 GPS 신호 추적을 확장형 칼만 필터를 적용하여 열차의 속도 변화에 대한 GPS 신호 추적 루프를 예측 제어함으로써 보다 정확하고 빠른 GPS 위치 정보를 도출하였다.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.29 no.6D
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• pp.675-683
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• 2009

A Basic experimental study for the development of vibration-power generation system from the vibration energy of urban infrastructure, such as a railroad, highway, and bridges, was carried out to harvest electricity from moving vehicles. Starting with the proposal of vibration power generator which converts vibration energy to an electric power by using self-induction technology, the research explains the basic concept of self-induction technology and the dynamic characteristics of a ibration power generator. Also, in order to analyze the correlation of an electromotive force from vibration power generator which depends on external force and vibration speeds, many indoor experiments with various variables were achieved. Based on the experimental results, a vibration power generator system's ability were analyzed. With those results, basic data of vibration power generator system to acquire the maximum available power was confirmed.

• Proceedings of the KSR Conference
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• 2007.11a
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• pp.1852-1857
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• 2007

Since the introduction of the subway, remarkable progress has been made so as to be able to produce a Korean standard electric car, but it is rather regretful that an engineer who is not aware of laws on a railroad or involved in a railroad designed a electric car. In the future, the electric cars with up-to-date technology must be introduced, but there are many difficulties in such introduction. For example, the operation of simultaneously moving and running scores of subway trains must comply with Regulation on Railroad Train Operation, so, close examination of these problems is required. The existing electric car, as does a motorcar, varies a little with makers in the type and characteristics. This paper is intended to discuss about the device and measures for reinforcing a function of Daewoo GEC electric car that was introduced by technical tie-up from England, which accounts for the most ratio in this field

• Proceedings of the KSR Conference
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• 2011.05a
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• pp.413-422
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• 2011

A battery is an important part of the component, as a power source of the control of rolling stock at starting movement or emergency control. Now widely used batteries are Ni-Cd batteries and lead accumulators, and these are increasingly getting smaller and lighter. In addition, the electric capacity required is increasing, due to the development of electronic control technology of rolling stock. Therefore, various kinds of high-efficiency battery are considered for the new routes' rolling stock, but rolling stock's batteries should be fully tested to prove safety and also have no difficulty in terms of management, so because of the requirement, it is difficult to be in practical application. In this paper, we will survey cases of applying battery to rolling stock and then we will review whether there is any problem about safety and performance, management to discuss future trend of batteries.

• Proceedings of the KSR Conference
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• 2008.06a
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• pp.489-494
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• 2008

The measurement of magnetic field is performed about DC and AC magnetic field in electric railway line. The test point is cap, on the converter/inverter box, on the traction motor and on the SIV, the height of measurement is bottom and 60 cm height. In case of AC magnetic field, the selected specific frequency is measured on the converter/inverter box. The AC magnetic field is checked and analysis through BNC output, DAQ cad and notebook PC.

• 사회경제평론
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• v.31 no.3
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• pp.271-305
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• 2018

Today we live in the Hyper-Connected Society. The Hyper-Connected Society is the network society connected with hyper-connectivity. We know that this technical substructure of hyper-connectivity is the 4th industrial revolution. In this paper, I want to find the origin of the Hyper-Connected Society by clarifying the pattern of the staged development of industrial revolution. The variation pattern of technical revolution including industrial revolution can be summarized very simply as follows; (1) technical revolution ${\rightarrow}$ network revolution, (2) network revolution화 ${\rightarrow}$ the variation of social network, material revolution${\rightarrow}$spiritual revolution. The pattern of the staged development of industrial revolution is as follows. Therefore, in the aspects of network revolution, the origin of the Hyper-Connected Society is the railroad revolution in USA after 1840.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.31 no.11B
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• pp.997-1004
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• 2006

There is a growing demand to access the broadband internet while on the very fast move. In order to meet these users needs, much research has been made for providing the broadband internet and HDTV services via satellite broadband internet systems even at top train speeds above 200km/h. In this paper, economic analyses on the satellite broadband internet services for KTX are to be reviewed. Broadband internet to trains in Europe are investigated, and Boeing cases for planes are also examined. In the first step, system configuration which is composed of a hub, terminals, satellite, and gap fillers for the tunnel areas has been proposed. A terminal includes a ultra-fast high gain antenna installed on the roof of the train, and APs inside the coaches. Secondly, cost estimation on the capital expenditures as well as operating expenditures has been performed in the proposed configuration. From the european and Boeing cases, demand and tariff are postulated, consequently, service revenues are derived on the scenario basis. Thirdly, estimated costs and derived revenues make up net present value and internal rate of return in each scenario. Finally, conclusions and contribution of this study are presented.