• 제목/요약/키워드: 교류전기철도

검색결과 63건 처리시간 0.029초

열차추진시스템에서 유도전동기의 속도제어를 위한 제어기 설계에 대한 연구-2 (A Study on the Design of Controller for Speed Control of the Induction Motor in the Train Propulsion System-2)

  • 이중호;김민석;이종우
    • 한국철도학회논문집
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    • 제13권2호
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    • pp.166-172
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    • 2010
  • 현재 전기철도에서는 고성능 유도전동기를 사용하고 있어서 열차속도제어를 위해 벡터제어를 이용하고 있다. 또한 최근에 인버터와 제어이론의 개발로 인해 다양한 방법으로 유도전동기 제어가 가능하다. 현재 유도 전동기를 사용하는 철도차량은 교류전동기를 이용한 역행, 역상제동 및 회생제동 등이 가능하다. 따라서 다양한 방법을 적용하기 위해서는 모터블록과 유도전동기의 모델이 필요하다. 유도전동기의 제어 방법으로는 가변 전압운전, 가변주파수 운전을 통하여 유도전동기의 토크와 회전수를 제어한다. 철도차량 추진시스템은 많은 서브시스템을 가지고 있어 속도제어 성능을 해석하기가 매우 복잡하다. 본 논문에서는 유도전동기를 사용하는 철도차량 추진시스템을 대상으로 Matlab/Simulink를 이용한 속도제어 특성을 분석하였고, 일정시간에 부하에 대한 외란입력응답 특성을 해석하였다. 또한 철도차량 추진시스템의 속도제어 특성을 해석하기 위해 전류, 속도, 자속추정기 및 유도전동기 모델을 제시하였다.

직류 전기철도의 교류화 분석 (Change analysis with A.C of D.C electric railway)

  • 김윤식;이기승;심재석
    • 한국철도학회:학술대회논문집
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    • 한국철도학회 2008년도 추계학술대회 논문집
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    • pp.151-156
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    • 2008
  • The after 1974 capital region electric railroad is opened to traffic Koraill and Seoul metro adopt each other different power supply method and they operate and they are come. AC 25[kv] method voltage the insulation becomes larger standing distance highly, the case tunnel section which will introduce in the underground segment becomes on a large scale and the cost of construction increases to the city center and the underground segment adoption of DC method was many. To recent times with R-bar (Rigid-bar) introductions change of tunnel section the introduction of AC method came to be easy without in the underground segment. Operates sees in the electric protection where the Seoul metro and the Korail are different each other and, from the dead section segment the interior electric light to put out lights the passenger brings about inconveniently and the civil appeal which demands a power supply method unification occurs, within the company interchange electric railroad brazier safety improvement and maintenance expense curtailment etc. the flaw is original proposal, is a condition which finishes a feasibility study service about the power supply method fringe land. Interchange analysis of the DC electric railway it leads from the present paper and it compares under analyzing being it could be reflected to also the route which is in the process of actual using boil the strong point and a weak point of DC and AC method of the establishment route constructive at the time of and

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교류 고속철도계통에서 BESS의 도입을 위한 전력소비 및 충·방전효과 분석에 관한 연구 (Study on Analysis for Power Consumption and Charge/Discharge Effect with BESS in AC High-Speed Electric Railway System)

  • 전용주;강병욱;채희석;김재철
    • 조명전기설비학회논문지
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    • 제28권9호
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    • pp.20-27
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    • 2014
  • The power consumption pattern of high-speed railway has rarely during night time. But, during service time, the power is consumed irregularly related to train operation. Especially certain unusual about 1-2 days of service time interval to indicate the power consumption is rapidly growing phenomenon, which causes the capacity of the power contract is the annual electricity bill to rise rapidly as the cause. Normally, amount of peak power consumption bill rate at railway substation is over 20% of total electrical bill. Therefore, high-speed railway substation is expected to be considerably larger savings by reducing the peak power of the default charge(demand power).

철도차량 운행 및 선로조건에 따른 교류 급전시스템의 안정성 연구 (A study on stability of feeder system considering driving of railway vehicle and rail conditions)

  • 김재문;김양수;이종성
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2011년도 제42회 하계학술대회
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    • pp.2213-2214
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    • 2011
  • It is important to consider power stability in case of design and construction of a substation at railroad because a train is operated by electricity and tains are drived simultaneous at the same section. This paper described stability of feeder system considering driving conditions and railroad conditions of train which is drived. Simulation tool, TOM(Train Operations Model) software is used to ensure stability of feeder system. As results of simulation, feeder voltage source is in limits on driving operation dia of trains.

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PSCAD/EMTDC를 활용한 COMTRADE 기반의 교류철도 급전계통 사고 데이터 분석에 관한 연구 (A Study of Analysis of Fault Data in AC Electrical Railway Power System Based on COMTRADE Using PSCAD/EMTDC)

  • 이지혜;민명환;안태풍;이병곤
    • 전기학회논문지
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    • 제67권11호
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    • pp.1542-1548
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    • 2018
  • When any faults occurred in electrical railway system, operators need to analysis it quickly and accurately. Existing COMTRADE based analysis tools are not enough to analysis faults occurred in electrical railway system. In this paper, it presents some functions to fault analysis for electrical railway system based on fault data formatted COMTRADE. These functions are implemented in PSCAD/EMTDC and it can be shown that analyzed results against actual electrical fault cases which were occurred in the electrical railway power system.

고속철도 교류 급전계통 주변의 정전유도 영향 분석 (Analysis on Electrostatic Coupling around High speed Railway Feed System)

  • 명성호;이재복;김응식;민석원;이종우;이장무
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2000년도 하계학술대회 논문집 B
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    • pp.1390-1392
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    • 2000
  • In this paper, a numerical calculation method based on CSM has been described. The electric field must be nonuniform even close to railway feed system. In that case, to calculate induced voltage, this paper uses the mutual capacitances between a conductor and railway feed system. The induced voltages of a conductor located at point (height=4m, distance=8m) near by railway feed system are calculated from 370V to 668V.

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AT 교류 철도계통 내 다량 열차 운전시 새로운 동적전압 해석 알고리즘 연구 (A Novel Simulation of Dynamic Voltages for Multiple-trains in AT-fed Railway Power Supply)

  • 전용주;임성정;전명수;김태수;김재철
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2000년도 하계학술대회 논문집 B
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    • pp.1399-1401
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    • 2000
  • This paper presents a novel simulation of dynamic voltages in AT-fed railway power supply. Proposed algorithm is efficient and simple by using the circuit decoupling and iteration method. To verify the proposed method, we used real condition operating data and performed a several case studies. Under train is constant power, we separated each AT section to calculate a loop current, train voltage on any position. Finally, this result utilizes a planning and operation of electrical railway systems.

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철도 부하의 동적 특성을 고려한 전류 불평형의 분석과 보상 (Analysis and compensation of the current unbalance considering dynamic characteristic of feeding traction loads)

  • 김기표;김진오
    • 조명전기설비학회논문지
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    • 제17권1호
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    • pp.54-60
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    • 2003
  • 3상 전력계통에 단상 대용량의 전철부하가 접속되면 3상 전류가 불평형하게 되어 역상 전류가 흐르게 된다. 이 역상전류는 전원 측 발전기의 회전자 표면에 과전류를 발생시키며, 급전계통 및 관련 설비에 나쁜 영향을 끼치게 된다. 현재 교류 전기철도에서는 불평형 경감을 위하여 Scott결선 변압기를 채용하고 있으나 2차 극의 서로 다른 단상부하 크기 및 위상을 동일하게 일치시킬 수는 없고, 회생부하 전기차 도입과 인관 변전소 사고로 인한 연장급진도 고려해야 되기 때문에 역상전류 보상기가 필요하다. 본 논문은 기존의 전류불평형 해석방법인 정적모델 평가기법 대신에 열차운행스케줄에 따른 동적 특성을 이용한 새로운 전류불평형 평가기법을 유도하였으며, 이를 통해 부하 측의 불평형에 의해 발생하는 역상전류를 흡수하기 위한 보상기를 제안하고 실 계통에 가까운 전류불평형 문제를 분석하였다.

능동형 전압제어를 통한 교류 전기철도 급전망에 대한 전력손실 분석 (A Power Losses Analysis of AC Railway Power Feeding Network using Adaptive Voltage Control)

  • 정호성;김형철;신승권;김진호;윤기용;조용현
    • 전기학회논문지
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    • 제62권11호
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    • pp.1621-1627
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    • 2013
  • This paper compares power losses between voltage controlled before and after using power conversion device in AC feeding system. For this purpose we present voltage control procedures and criteria and model high speed line and train using PSCAD/EMTDC to compare power losses in various feeding condition. Power losses of the simulation result in power control before and after in single point feeding system was reduced maximum 0.37 MW(23.8 %) and average 0.23 MW(20.5 %) when one vehicle load operates maximum load condition. When three vehicles operate maximum load condition in one feeder section, power losses after voltage control was reduced 1.03 MW(49.5%) compared to before voltage control. And, power loss of parallel feeding system is reduced the average 0.08 MW(7.2 %) compared to the single feeding system. In conclusion, adaptive voltage control method using power conversion device can reduce power losses compared with existing method.

국내 교류 전기철도 급전계통 보호용 과전류 계전기 모델링 및 과부하 보호 협조에 관한 연구 (A Study on the Overcurrent Relay Modeling and Protective Coordination for Overload in Domestic AC Electrical Railway System)

  • 김현동;조규정;허승훈;김철환
    • 전기학회논문지
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    • 제65권7호
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    • pp.1121-1127
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    • 2016
  • In this paper, modeling of overcurrent relay(OCR) to protect domestic AC electric railway Auto Transformer(AT) feeding system and operation characteristic analysis on overload condition are described. The target system of this paper is actual site where overload trip of circuit breaker occurs frequently. Because this AT feeding system is made of parallel single track which had a load(electric train) respectively, and is connected with only T phase of Scott Transformer. In addition, this system has been feeding 66kV voltage by KEPCO, not 154kV. We focus on protective coordination of Scott Transformer primary side and secondary side OCR for Korea single track AC electrical railway system in operation currently. We modeled single track AT feeding system and OCR. Also we performed faults and overload analysis for verification of OCR's setting values and system modeling. To analyze above mentioned research, we used PSCAD/EMTDC software tool.