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임형길(Hyeong-gil Im),이병두(Byung-du Lee),김용덕(Yong-duk Kim),장순호(Soon-ho Jang) 한국철도학회 2011 한국철도학회 학술발표대회논문집 Vol.2011 No.10
Key set the current non-urban rail power failure of equipment to operate the railway will generate a lot of problems. I know in advance the ideal of power equipment to prevent the failure to derive an efficient replacement cycle for the power equipment monitoring and diagnosis of the condition can become necessary to develop a system. In order to determine the status of the power plant during operation and behavior of the partial discharge current state data regular monitoring and inspection requirements also stamp the basic current voltage temperature and humidity should be identified.
도시철도 전력설비 이상검출용 장치 공장시험에 대한 고찰
임형길(Hyeong-Gil Im),유기선(Ki-Seon Ryu),정호성(Ho-Sung Jung),최광범(Kwang-Bum Choi),이기승(Gi-Seung Lee) 한국철도학회 2010 한국철도학회 학술발표대회논문집 Vol.2010 No.7
Because of the environmental matters the importance of the city railroad is as time goes by increasing. The case of obstacle of the power equipment which supplies electric power to city railroad will occur social and economical enormous loss. Thus, I studied on the preventing method in advance which makes it possible for us to maintain facilities efficiently. The main check points of the power facilities are voltage, current, humidity, partial discharge, move current. These points are gathered by sensor and transmitting to data acquisition device. These data are used to check equipment status in real time. In this paper I described in brief test process and results of the detection system.
도시철도 전력을 이용한 전기차 충전장치 현장시스템 구현
임형길(Im Hyeong-gil),유기선(Ryu Ki-seon),강현일(Kang Hyun-il),김윤식(Kim Youn-sik),심재석(Sim Jae-suk),이기승(Lee Gi-seung) 대한전기학회 2010 대한전기학회 학술대회 논문집 Vol.2010 No.11
저탄소 녹색성장이라는 정부의 강력한 지원정책 중 하나인 전기자동차 활성화 방안 발표 이후 서울시에서는 2010년 4월부터 전기자동차의 시내주행을 허용하고 2011년으로 예정된 완성차 업계의 전기자동차 양산예정에 맞춰 전기자동차 충전인프라 구축이 절실히 필요한 실정이다. 이에 도시철도에서는 전기차의 급속충전에 사용예정인 DC전력이 이미 구축되어 전력인프라를 쉽게 활용할 수 있고, 서울시 및 수도권에서 운영중인 많은 역사를 쉽게 이용할 수 있는 유리한 점이 있어 전기차 충전시스템 개발이 용이하다. 본 논문에서는 전기차를 충전하는 과정을 시연 및 홍보하고자 도시철도 전력망을 이용하여 연구개발하고 있는 전기차 충전장치중 교류용 전기차 충전장치를 수서역 공영주차장에 현장설치되는 시스템에 대하여 기술하였다.
유기선(Ki-seon Ryu),임형길(Hyeong-Gil Im),김윤식(Yoon-Sik Kim),심재석(Jae-Suk Sim),이기승(Gi-Seung Lee) 한국철도학회 2009 한국철도학회 학술발표대회논문집 Vol.2009 No.11월
Considering the increasing importance of the metropolitan railway as citizen's transportation any glitches bring about heavy economic and social losses. Regarding metropolitan railway as electricity-railway obstacle on electricity facility can result in all facility and train operation disorder. Therefore the periodical inspection about eccentricity facility is very important task to operate the train safely. As using this maintenance inspection manual about the periodical inspections systematically the worker can enhance operation efficiency and get the stability on suppling electric power. This paper treats the inspection process, the safe measures and advance preparations about Seoul Metro electric facility to manage more efficiently.
몰드변압기를 위한 부분방전 실시간 감시시스템 현장 측정
강현일(Kang Hyun-Il),임형길(Im Hyeong-Gil),유기선(Ryu Ki-Seon),이기승(Lee Gi-Seung) 한국철도학회 2009 한국철도학회 학술발표대회논문집 Vol.2009 No.11월
Typically, in a partial discharge detecting device for a molded transformer with tap terminals of a no-load switching type on the high voltage winding, the output signal of a partial discharge detecting sensor connected between the tap terminals is applied through an amplifier circuit to an indicator. The sensor is arranged on the high potential side whose potential corresponds to the potential to ground of the tap terminals. The simulation results show the proposed approach may achieve a quite satisfactory recognition of partial discharge patterns.
전기차 충전시스템을 위한 도시철도 DC 전력의 활용방안 연구
강현일(Kang Hyun-il),김윤식(Kim Youn-sik),심재석(Sim Jae-suk),임형길(Im Hyeong-gil),유기선(Ryu Ki-seon),이기승(Lee Gi-seung) 한국철도학회 2010 한국철도학회 학술발표대회논문집 Vol.2010 No.7
Electric vehicles have reached a new level of development with introductions by Chrysler, Ford, Honda and Toyota. Today's charging technology includes conductive and inductive charging systems. There are three standardized charging levels: Level 1: charging can be done from a standard, grounded AC 120V, 3-prong outlet available in all homes Level 2: charging is at AC 240V, 40 amp charging station with special consumer features to make it easy and convenient to plug in and charge EVs at home or at an EV charging station Level 3: a high-powered charging "fast charge" technology currently under development that will provide a charge in less than 15 minutes. The incoming AC power is converted to DC and stored in the vehicle's batteries. In this paper, we investigated the application of urban railway DC electric power for electric car charging system.
전차선로에 유기되는 전압에 대한 원인분석 및 대책방안 연구
김환섭(Hwan-Seop Kim),이기승(Gi-Seung Lee),임형길(Hyeong-Gil Im) 한국철도학회 2012 한국철도학회 학술발표대회논문집 Vol.2012 No.5
무가압 전차선로에 전압이 유기되면 전차선로를 점검하는 작업자는 감전사고 및 쇼크에 의한 추락사고 등의 위험에 노출되며, 순환전류 등에 의한 전차선로 설비의 안전사고 개연성이 존재한다. 서울메트로에서 운영하고 있는 4호선 본선구간과 차량기지간에 영업종료후 본선구간 전차선에 해당 차단기가 개방 되었음에도 전차선로에 0~400[V] 정도의 전압이 유기되고 있었다. 그 원인을 한전의 노원변전실로 연결된 154kV 고압송전로에서 전압이 유도되는 것과 본선구간과 차량기지간 절연구분장치의 성능저하 등으로 볼 수 있으나 전차선로에 유기되는 전압의 정확한 원인을 파악하고자 실제 전차선에 유기되는 전압을 측정하고 경로를 파악하기 위하여 디지털기록계 및 자체 제작한 전압변환장치를 활용하여 연구를 수행하였다. 본 논문에서는 전차선로에 유기되는 전압의 원인을 파악하고 분석하는 과정과 그 해결방안을 제시코자 한다. When the voltage induced in pressureless the Catenary electric car tracks worker to check the shock and trauma caused by the crash are exposed to such risk, the Catenary Equipment by circulating currents, etc. there is the probability of accidents. Seoul Metro Line 4 in the operating and sales after the end between Main Line and the train depot on Main Line Catenary electric car tracks even if the corresponding circuit breaker to open 0 ~ 400 [V] so that the voltage was being induced. The cause of KEPCO 154kV high voltage transmission lines connected to substation Now on voltage induced in the same main line and vehicle-based sections separated by an insulating span view of the device due to poor performance, but the voltage induced in electric car tracks To investigate the exact cause of the real catenary to measure the voltage induced in a digital recorder in order to determine the path and the voltage conversion device which utilizes its own research has been carried out. In this paper, the voltage induced in electric car tracks and analyzed to determine the cause of the process and are reviewed to present its solution.
이지철(Ji-chul Lee),이동준(Dong-Zoon Lee),어수영(Soo-Young Uh),유기선(Ki-son Ryu),임형길(Hyeong-Gil Im),정호성(Ho-sung jung) 한국철도학회 2008 한국철도학회 학술발표대회논문집 Vol.- No.-
Urban Railway was used importantly with transport for several decades. This transportation facilities used electricity. When the breakdown occurs, social, the economic loss is enormous. In addition to, the power equipment was ageing. We need preventive diagnostic monitoring system in order to prevent breakdown of power equipment. In this paper, we investigates characteristic and breakdown type of the Urban Railway power equipment. Through the this research, we can contribute in the operation which power equipment is efficient of the Urban Railway.