bibo:abstract
  • The current flowing though a power line is measured by a current transformer(CT). Since a CT is a kind of transformer, saturation of magnetic flux in the core may occur when a large primary, current flows. This saturation makes the secondary current of a CT distorted and causes problems in the protection point of view. Because of the current distortion, a protection relay cannot collect the collect information showing how the primary power system changed. Consequently, the current distortion may cause the mal-operation or operation time delay of protective relay. In this paper, an algorithm based on AR model and LSQ is proposed to compensate the saturated CT secondary currents. Various test results indicate that the proposed algorithm can accurately compensate a severely distorted secondary current and is not affected by remanence. (rdf:langString) (en)
nlon:biographicalNote
  • 강상희, 정회원, 명지대학 전기공학과 교수·공박, shkang (rdf:langString) (mju.ac.kr)
  • 이동규, 정회원, 명지대학 전기공학과 박사과정, mallow@ (rdf:langString) (mju.ac.kr)
  • 장수영, 정회원, 명지대학 전기공학과 석사과정, sychang (rdf:langString) (mju.ac.kr)
nlon:classificationNumberOfNLK
  • 560.5 (xsd:string)
nlon:containedIn
dc:creator
  • 강상희 (xsd:string)
  • 이동규 (xsd:string)
dcterms:creator
nlon:datePublished
  • 2021-01-30T23:37:12 (xsd:dateTime)
dcterms:description
  • AR model and LSQ based compensation method for the saturated secondary current of a current transformer (xsd:string)
bibframe:extent
  • 30 cm (xsd:string)
  • p. 221-226 (xsd:string)
dcterms:isPartOf
nlon:issuedYear
  • 2006 (xsd:string)
nlon:itemNumberOfNLK
  • 대483ㄱㄱ (xsd:string)
rdfs:label
  • AR 모델 및 LSQ 기반 변류기 2차 전류 복원 기법 / 張洙榮, 李東圭,姜相熙 (xsd:string)
dcterms:language
dc:subject
  • AR model (xsd:string)
  • CT saturation (xsd:string)
  • Compensation (xsd:string)
  • Least square method (xsd:string)
  • 보호계전기 (xsd:string)
  • 전류 복원 (xsd:string)
  • 최소자승법 (xsd:string)
dcterms:title
  • AR 모델 및 LSQ 기반 변류기 2차 전류 복원 기법 (xsd:string)
rdf:type
nlon:volumeOfNLK
  • 55(1)-55(6) (xsd:string)