bibo:abstract
  • The conventional method to deal with current transformer (CT) saturation is overdimensioning of the core so that CTs can carry up to 20 times the rated current without exceeding 10% ratio correction. However, this not only reduces the sensitivity of relays as some errors may still be present in the secondary current when a severe fault occurs, but also increases the CT size. This paper presents an algorithm for compensating the distorted secondary current of iron-cored CTs under CT saturation using the magnetization (flux-current : λ-i) curve and its performance is examined for fault currents encountered on a typical 345[㎸] Korean transmission system, under a variety of different system and fault conditions. In addition, the results of hardware implementation of the algorithm using a TMS320C10 digital signal processor are also presented. The proposed algorithm can improve the sensitivity of relays to low level internal faults, maximize the stability of relays for external faults, and reduce the required CT core cross-section significantly. (rdf:langString) (en)
nlon:biographicalNote
  • 강상희, 정회원, 명지대 공대 전기공학과 조교수, 공박 (xsd:string)
  • 강용철, 정회원, 서울대 대학원 전기공학과 박사과정 (xsd:string)
  • 김광호, 정회원, 강원대 공대 전기공학과 전임강사, 공박 (xsd:string)
  • 김성수, 정회원, 서울대 대학원 전기공학과 박사과정 (xsd:string)
  • 박종근, 정회원, 서울대 공대 전기공학과 교수, 공박 (xsd:string)
nlon:classificationNumberOfNLK
  • 560.5 (xsd:string)
nlon:containedIn
dc:creator
  • 강상희 (xsd:string)
  • 강용철 (xsd:string)
  • 김광호 (xsd:string)
  • 김성수 (xsd:string)
  • 박종근 (xsd:string)
dcterms:creator
nlon:datePublished
  • 2021-01-30T23:37:12 (xsd:dateTime)
dcterms:description
  • Hardware implementation and error analysis of an algorithm for compensating the secondary current of iron-cored current transformers (xsd:string)
bibframe:extent
  • 30 cm (xsd:string)
  • p. 490-500 (xsd:string)
dcterms:isPartOf
nlon:issuedYear
  • 1996 (xsd:string)
nlon:itemNumberOfNLK
  • 대483ㄱ (xsd:string)
rdfs:label
  • 철심 변류기의 2차 전류 보상 알고리즘의 실시간 구현 및 오차 분석 / 姜龍澈, 金成洙,朴鐘根,姜相熙,金光鎬 (xsd:string)
dcterms:language
dc:subject
  • 2차 전류 보상 알고리즘 (xsd:string)
  • Current transformer saturation (xsd:string)
  • Flux-current curve (xsd:string)
  • TMS320C10 digital signal processor (xsd:string)
  • 철심 변류기 (xsd:string)
dcterms:title
  • 철심 변류기의 2차 전류 보상 알고리즘의 실시간 구현 및 오차 분석 (xsd:string)
rdf:type
nlon:volumeOfNLK
  • 45(3) (xsd:string)