bibo:abstract
  • When a fault occurs on railway feeders it is very important to detect the fault to protect trains and facilities. Because a DC railway system has low feeder voltage. The fault current can be smaller than the current of load starting. So it is important to discriminate between the small fault current and the load starting current. The load starting current increases step by step but the fault current increases at one time. So the type of ΔI relay(50F) was developed using the different characteristics between the load starting current and the fault current. The load starting current increases step by step so the time constant of each step is much smaller than that of the fault current. First, to detect faults in DC railway systems, an algorithm using the time constant calculated by the method of least squares is presented in this paper. If a fault occurs on DC railway systems it is necessary to find a fault location to repair the faulted system as soon as possible. The second aim of the paper is to calculate the accurate fault location using Kirchhoff's voltage law. (rdf:langString) (en)
nlon:biographicalNote
  • 강상희, 정회원, 명지대학 전기공학과 교수·공박, shkang (rdf:langString) (mju.ac.kr)
  • 권영진, 정회원, 명지대학 전기공학과 박사과정, yjkwon (rdf:langString) (mju.ac.kr)
  • 양언필, 준회원, 명지대학 전기공학과 석사, epyang (rdf:langString) (kipi.or.kr)
nlon:classificationNumberOfNLK
  • 560.5 (xsd:string)
nlon:containedIn
dc:creator
  • 강상희 (xsd:string)
  • 권영진 (xsd:string)
  • 양언필 (xsd:string)
dcterms:creator
nlon:datePublished
  • 2021-01-30T23:37:12 (xsd:dateTime)
dcterms:description
  • (A)fault detection and location algorithm using a time constant for DC railway systems (xsd:string)
bibframe:extent
  • 30 cm (xsd:string)
  • p. 563-570 (xsd:string)
dcterms:isPartOf
nlon:issuedYear
  • 2003 (xsd:string)
nlon:itemNumberOfNLK
  • 대483ㄱㄱ (xsd:string)
rdfs:label
  • 시정수를 이용한 직류철도급전계통에서의 고장판단 및 고장점표정 알고리즘 / 梁彦泌, 姜相熙,權寧珍 (xsd:string)
dcterms:language
dc:subject
  • DC railway systems (xsd:string)
  • Kirchhoff's voltage law (xsd:string)
  • Power system blockset (xsd:string)
  • 고장점표정 (xsd:string)
  • 고장판단 (xsd:string)
  • 시정수 (xsd:string)
  • 직류철도 (xsd:string)
dcterms:title
  • 시정수를 이용한 직류철도급전계통에서의 고장판단 및 고장점표정 알고리즘 (xsd:string)
rdf:type
nlon:volumeOfNLK
  • 52(7)-52(12) (xsd:string)