전차선로 급전계통 구성의 최적화 방안

유기성(Ki-Seong Yu) 한국철도학회 2014 한국철도학회 학술발표대회논문집 Vol.2014 No.10

전차선로는 설비의 특성상 예비선로를 확보할 수 없어 급전계통 장애사고가 발생하면 정전구간이 길어지고 복구하는데 많은 시간이 소요되어 전기철도차량 운행에 막대한 지장을 초래하게 된다. 따라서 본 논문에서는 철도 분기점이나 고속열차 대형역구내의 전차선로 급전계통을 구성할 때 철도운영 시 발생한 사고사례와 유지보수 노하우를 집중 연구분석하여 열차운행 특성을 고려해 열차운행 지연을 최소화 할 수 있는 전차선로 급전계통 구성의 최적화 방안을 제시하고자 한다. 반면 무분별한 전차선로 급전계통의 구분장치 설치는 고속화 지장, 사고발생 원인, 유지보수 비용 증가로 슬림한 전차선로 급전계통 구성도 필요하다. 이러한 전차선로 급전계통 구성의 최적화 방안은 전차선로 설계․시공 뿐만아니라, 전차선로 급전계통 운용 및 전차선로 유지보수 시에 적용하면 유용할 것이다. Is time-consuming to repair the outage period is longer if the power supply system failure occurs, the accident could not be obtained preliminary nature of the catenary line of equipment which results in a significant disruption to the electric rail vehicle operation. Therefore, to minimize the catenary trains delayed trains, consider the characteristics and intensive research and analysis of accident cases caused when railroad operations and maintenance expertise to configure the power supply to the catenary system of high-speed train railway junctions and large train stations in this paper we present a method for optimizing the power supply to the system configuration. Whereas a reckless catenary power supply system configuration is required to speed up and slim trouble, accident cause, with nine minutes catenary equipment installation and maintenance costs of the system is the power supply. This will be useful when applied to the catenary during maintenance operations to the catenary system with the power supply and catenary design catenary construction, as well as, ways of optimizing the configuration of the power supply system.

A Study on the Impedance Calculation by using Equivalent Model in Catenary System

Minkyu Kim,Minseok Kim,Daehwan Kim,Jongwoo Lee 한국철도학회 2010 International Journal of Railway Vol.3 No.2

철도 가선시스템의 감쇄 특성 파악에 관한 연구

박성용(Park, Sungyong),전병욱(Jeon, Byunguk),이응신(Lee, Eungshin),조용현(Cho, Yonghyeon) 한국신재생에너지학회 2005 한국신재생에너지학회 학술대회논문집 Vol.2005 No.06

A railway catenary system which supplies a train with electric power is an important system in determining the maximum speed of an electric train. However, a pantograph could be separated from a contact wire because of reciprocal action between a pantograph with constant upward force and a catenary system. The contact loss of a pantograph-catenary system is mainly affected by the dynamic characteristics of damping and wave propagation velocity of contact wire. For increasing speed of an electrical train, it is necessary to establish the techniques to identify the modal parameter of a catenary system through experiment. However, it is difficult to decouple each mode and to extract respect ive damping rat io since a catenary system has an extremely high modal density. For this reason, mode decoupling process to identify modal parameters is a principal technique in analyzing a catenary system. In this paper, the damping extract ion method for a catenary system using the continuous wavelet transform is discussed.

A Study on the Impedance Calculation by using Equivalent Model in Catenary System

Kim, Min-Kyu,Kim, Min-Seok,Kim, Dae-Hwan,Lee, Jong-Woo The Korean Society for Railway 2010 International Journal of Railway Vol.3 No.2

Electric railroad systems consist of rolling stock, track, signal and catenary system. In the catenary system, one of the most important factors is the impedance according to the design and characteristic. Before the catenary system is designed, the impedance should be precedently researched. The railroad catenary system is complex system which is composed by five conductors. The five conductors classify up and down feeders, up and down contact wire group, rail group. Therefore, we should compose the catenary system of the equivalent five-conductors model. In this paper, we suggest a geometrical model and a equivalent conductor model by using geometric mean radius of five conductors in the catenary system. Also, we calculate demanded parameter values in the model. By using those, line constants of five conductors are analyzed by applying the equivalent method called as the condensed joint matrix.

전차선로 등가모델을 이용한 임피던스 계산에 대한 연구

김대환(Kim Daehwan),신명호(Shin Myoungho) 한국철도학회 2009 한국철도학회 학술발표대회논문집 Vol.2009 No.11월

Electric railroad systems consist of rolling stock, track, signal and catenary system. In the catenary system, one of the most important factors is the impedance according to the design and characteristic. Before the catenary system is designed, the impedance should be precedently researched. The railroad catenary system is complex system which is composed by five conductors. The five conductors classify up-down feeders, rails, overhead earth wires, ground wires and catenary conductor group. Feeders and messenger wires are included in the catenary group because of a conductor by using droppers. On account of existing five conductors, the impedance divides into the self impedance and mutual impedance. The self impedance defines a drop of electric pressure rates per unit length regarding the feedback current to the ground through the catenary. The mutual impedance defines the induced voltage rates from the current of a conductor to another conductor. In this paper, we suggest a geometrical model and a equivalent conductor model by using geometric mean radius of five conductors in the catenary system. Also, we calculate demanded parameter values in the model. By using those, line constants of five conductors are analyzed by applying the equivalent method called as the condensed joint matrix.

전차선로 전기적 특성 평가 시스템 구현

오석용,박영,조용현,이기원,송준태,Oh, Seok-Yong,Park, Young,Cho, Yong-Hyeon,Lee, Ki-Won,Song, Joon-Tae 한국전기전자재료학회 2011 전기전자재료학회논문지 Vol.24 No.6

Currently in Korea, the simple catenary type overhead contact line system is being applied to both conventional lines and high speed lines of electric railway, and circulation current flowing into the catenary system frequently bring undesirable consequences. Namely, the connector wire has many problems according to a flow of excessive circulation current and arc current on catenary when an electric train runs at high speed. This paper presents the development and application of a real-time data acquisition system designed to measure the electrical characteristics of an overhead catenary system in electric railways. The developed system is capable of storing data of a 25 kV power source in a live wire state through a telemetry environment. The field test results show that the proposed technique and the developed system can be practically applied to measure characteristics of current of an overhead catenary system.

세계 최초 화물취급선용 이동식전차선 국산화 개발

박순달(Soon-Dal Park),김성철(Seong-Cheol Kim),변상운(Sang-Woon Byun),서민석(Min-Suk Seo),배상준(Sang-Joon Bae),장광동(Kuang-Dong Jang) 한국도시철도학회 2017 한국도시철도학회논문집 Vol.5 No.4

철도 물류시설에서는 컨테이너 적재 및 하역을 위해 리치스태커 및 트랜스 크레인 등의 장비를 활용하고 있어서, 이러한 장비를 활용한 화물취급선 작업구간에서는 안전상의 이유로 전차선로 없이 상·하역 및 입환 구간을 운영하고 있다. 이에 따라 철도물류 관련시설에서는 전차선이 없는 상·하역 및 입환 구간을 별도로 운영하고 있으며, 해당 작업 구간에서는 전기 기관차를 투입할 수 없기 때문에 디젤기관차를 이용하여 화물 열차를 운영하거나 전기기관차가 투입될 경우에는 반드시 입환 디젤기관차를 사용하는 상황이어서 생산성 저하 및 경유 사용에 대한 동력비 부담 및 배기가스 등 환경적 문제를 안고 있다. 철도물류 개선을 위한 입환 생략모델인 E&S(Effective&Speedy Container Handling System) 구현을 위해 작업선 및 유치선에 가선이 없는 현재의 상황의 개선이 필요하며, 이러한 개선 방안으로 가선만 개선하는 이동식 전차선 방식, 차량만 개선하는 하이브리드 전기기관차, 설비 및 차량 모두의 개선이 필요한 제3궤조 및 유도 급전시스템의 적용, 컨테이너 이단적재열차 DST(Double Stacked Train) 도입 등이 검토 되고 있다. 따라서 본 논문에서는 이동식 전차선 방식을 검토하여 회전형 이동식 전차선을 적용한 주요 개발품과 현장 Test-bed를 구축하여 기존 철도차량기지 검수고용 이동식전차선 시스템 대비 실외설치에 따른 하절기 및 동절기의 격년변화 변화에 따른 내후성을 검증 하고자 한다. Container yards of conventional cargo handling lines mainly use reach stackers for container loading and unloading, and they were only using diesel locomotives because they could not be used for the operation of the reach stacker under conventional overhead catenary. The movable rigid catenary was installed on the existing cargo handling line, so that we could use electric locomotives without a shunting diesel locomotive and it was possible to unload containers without intervention of the overhead catenary. In order to implement E&S(Effective & Speedy Container Handling System), it is necessary to adjust the current environment that there is no lie on the work line and the lead line. The movable rigid catenary, which requires improvement of ovehead contact lines, the hybrid locomotive which requires improvement of vehicles, the third rail and induction feed system, which requires improvement of both locomotives and facilities, and the introduction of double stacked trains (DST) are considered. In this paper, we will review movable rigid catenary systems and through field test using the rotary movable rigid catenary system, we will compare the developed system with a system installed in a railway depot to verify seasonal variation in the summer and winter seasons when it is installed outdoors.

유한요소해석을 이용한 3차원 전차선로의 동특성 분석

이규호(Kyoho Lee),조용현(Yonghyun Cho),정진태(Jintai Chung) 대한기계학회 2009 大韓機械學會論文集A Vol.33 No.11

Dynamic and static behaviors of a three-dimensional catenary system for a high-speed railway are analyzed by using the finite element method. Considering tensions in the contact wire and the messenger wire, we drive the equations of motion for the catenary system. These equations are for the longitudinal, transverse, vertical and torsional motions. After establishing the weak form, the weak forms are spatially discretized with newly defined two-node beam elements. With the discretized equations, a finite element computer program is developed for the static and dynamic analyses. The static deflections of the catenary system, which are important for good contact between the pantograph and the contact line, are computed when the gravity is applied. On the other hand, we analyze the natural frequencies and the corresponding natural modes of the catenary system. The dynamic responses of the system are also investigated when applying a load to the contact line. For verification of the developed finite element program, vibrations of the catenary system are measured and they are compared to computed time responses.

FMECA를 통한 전차선로 가선시스템의 신뢰도 분석에 관한 연구

윤응규(Eung-Kyu Youn),최규형(Kyu-Hyoung Choi) 대한전기학회 2015 전기학회논문지 Vol.64 No.11

The reliability of catenary system is very important for uninterrupted train operation as it supplies electric power to train without redundant facilities. This paper provides a systematic approach to the reliability analysis of the catenary system based on FMECA procedures defined by global standards such as MIL Std 1692a and IEC 60812. Field failure data collected from the operation and maintenance of high-speed railway catenary system for 9 years are used to derive critical failure modes and to evaluate the criticality of the failure modes. Evaluation of the criticality are carried out by quantitative procedures defined by MIL Std 1692a and by criticality matrix defined by IEC 60812. FMECA results suggests that three critical failure modes should be checked carefully during maintenance work, which include strand break of dropper and voltage equalizing wire, power supply failure of feeder. Maintenance procedure of catenary system in order of importance is suggested too. These results can be applied to maintenance planning and design of catenary system to improve the reliability of electric railway system.

지진취약도 분석을 통한 전차선로시스템의 내진성능

박예진(Park Yejin),김민수(Kim Minseu),한승룡(Han Seungryong),최상현(Choi Sanghyun) 한국방재학회 2018 한국방재학회논문집 Vol.18 No.2

국내 철도시설의 경우 교량, 역사 등 토목구조물에 대해서는 내진설계나 보강을 통한 대비가 이뤄지고 있으나, 전철전력, 신호제어, 정보통신 등 열차의 안전운행에 필요한 설비 및 시설의 내진성능 확보에 대한 연구는 미흡한 상황이다. 이 논문에서는 국내 지반특성을 고려하여 개정될 내진설계기준과 다양한 관측지진을 이용하여 대표적인 전력시설인 전차선로시스템의 지진취약도 분석을 수행하였다. 지진하중은 다양한 지반조건에 따른 설계스펙트럼을 포괄하는 인공지진과 실측지진을 고려하였으며, 전차선 시설물의 파괴모드를 분석하여 지진취약도를 작성하였다. 전차선로시스템의 전철주 형식은 국내 부설 현황를 감안하여 H형강과 강관주를 검토하였다. 지진취약도 분석 결과 현재 부설되어 있는 전차선로시스템은 내진설계기준을 만족하며, 강관주 보다는 H형강주 사용 시 지진에 취약한 것으로 나타났다. 또한 관측지진 보다는 인공지진에 보다 취약한 것으로 나타났다. To date, while seismic design and reinforcement have been applied to railroad structures including bridges and stations to minimize earthquake damage, securing the seismic resilience of such facilities as electric, signal control, and communication systems is not sufficiently conducted. In this paper, the seismic fragility of the catenary system, one of the representative electric facility, is evaluated considering revising seismic design code based on domestic ground characteristics. The seismic excitation considers an artificial earthquake based on design spectra depending on various ground conditions as well as observed earthquakes, and the seismic fragility is built via analyzing failure modes of the catenary system. Considering recent construction status, two types of steel poles, H and tube sections, are analyzed. The analysis result reveals that the catenary system satisfies seismic design code, while more fragile to artificial earthquake than observed earthquakes. Also, the system with a H section pole is more fragile than with a tube section pole.