• 제목/요약/키워드: Deicing of catenary system

검색결과 3건 처리시간 0.025초

기존선 해빙시스템을 위한 해빙전류 예측기법 및 구성 절차에 관한 연구 (A Study on Deicing Current Estimation Technique and Configuration Process for Deicing System in the Conventional Line)

  • 권삼영;박영;정호성
    • 한국철도학회논문집
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    • 제9권2호
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    • pp.237-243
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    • 2006
  • Deicing system is to melt frost or ice freezed in catenary line when the temperature is lower than $0^{\circ}C$ in winter. The principle of deicing system is to melt frost or ice by Joule heat of catenary impedance. The performance of deicing is dependant of deicing current determined by the length of deicing section, deicing impedance and current division ratio of catenary line and messenger line. So, we present technique for estimating deicing current and process for determination of deicing section in the conventional line. Deicing impedance is estimated using Carson-Pollaczek equation, and current division ratio of catenary line and messenger line is estimated using voltage drop, and deicing current is estimated using power system data of deicing system. For the determination of the final deicing section, we verified estimated value comparing with experiment value of deicing impedance and current division ratio of catenary line and messenger line using low voltage experiment. Finally, we verified the validity of estimation technique and process using a simulated test data of real deicing system operation in the Chungju Substation, Chungbuk line.

기존선 해빙시스템 구성을 위한 해빙전류 예측기법 (Estimation Technique of deicing current for configuration of deicing system in conventional line)

  • 정호성;권삼영;박영;안병립;이주
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2005년도 추계학술대회 논문집 전기기기 및 에너지변환시스템부문
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    • pp.288-290
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    • 2005
  • Deicing system operated in high speed line is to melt frost or ice freezed in catenary line when the temperature is lower than 0 in winter. The principle of deicing system is to m디t frost or ice by Joule heat of catenary impedance. The performance of deicing is dependant of deicing current determined by the length of deicing section, deicing impedance and current division ratio of catenary line and messenger line. So, We present technique for estimating deicing current in convention line. Deicing impedance is estimated using Carson - Pollaczek, current division ratio of catenary line and messenger line is estimated using voltage drop, and deicing current is estimated using power system data of operation secion for deicing system in this technique. To verify the validity of technique, we compare the estimated current using technique of this paper with deicng current of high speed line.

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무선기반 전차선로의 해빙 감지시스템 구현 (An Implementation of Wireless Based Sensing System for Catenary Deicing)

  • 김주욱;나경민;박영
    • 한국전기전자재료학회논문지
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    • 제32권6호
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    • pp.512-515
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    • 2019
  • Overhead contact systems (OCS) consist of contact and messenger wires, in which the contact wire supplies electric energy to the railway vehicle by contacting a pantograph. However, this mechanical contact is interrupted during frosts or temperatures below $0^{\circ}C$ in the winter. In these conditions, railway vehicle accidents can occur during operation because of the low energy efficiency that results from the increase in the arcing between the contact wire and pantograph. Therefore, the detection of frost or freezing temperatures is necessary to maintain the stable operation of these trains. In this study, we proposed the development of a frost or freezing condition monitoring system on the OCSs that utilizes wireless communication.