bibo:abstract
  • This paper proposes a new Fourier transform-based phasor estimation method to eliminate the adverse influence of the exponentially decaying dc offsets when Discrete Fourier Transform (DFT) is used to calculate the phasor of the fundamental frequency component in a relaying signal. By subtracting the result of odd-sample-set DFT from the result of even-sample-set DFT, the information of dc offsets can be obtained. Two dc offsets in a relaying signal are treated as one dc offset which is piecewise approximated in one cycle data window. The effect of the dc offsets can be eliminated by the approximated dc offset. The performance of the proposed algorithm is evaluated by using computer-simulated signals and EMTP-generated signals. The algorithm is also tested on a hardware board with TMS320C32 microprocessor. The evaluation results indicate that the proposed algorithm has the stable and accurate eliminating performance even if the input signal contains two decaying dc components having different time constants. (rdf:langString) (en)
nlon:biographicalNote
  • 강상희, 정회원, 명지대 차세대전력기술연구센터 교수, 공박, shkang (rdf:langString) (mju.ac.kr)
  • 김철훈, 학생회원, 명지대 차세대전력기술연구센터 석사과정, mire80 (rdf:langString) (mju.ac.kr)
  • 이동규, 정회원, 명지대 차세대전력기술연구센터 박사과정, mallow (rdf:langString) (mju.ac.kr)
nlon:classificationNumberOfNLK
  • 560.5 (xsd:string)
nlon:containedIn
dc:creator
  • 강상희 (xsd:string)
  • 김철훈 (xsd:string)
  • 이동규 (xsd:string)
dcterms:creator
nlon:datePublished
  • 2021-01-30T23:37:12 (xsd:dateTime)
dcterms:description
  • Fourier transform-based phasor estimation method eliminating the effect of the exponentially decaying DC offsets (xsd:string)
bibframe:extent
  • 30 cm (xsd:string)
  • p. 1485-1490 (xsd:string)
dcterms:isPartOf
nlon:issuedYear
  • 2008 (xsd:string)
nlon:itemNumberOfNLK
  • 대483ㄱ (xsd:string)
rdfs:label
  • 지수 감쇄하는 DC 옵셋 영향을 제거한 푸리에 변환 기반 페이져 연산 기법 / 李東圭, 金哲勳,姜相熙 (xsd:string)
dcterms:language
dc:subject
  • DC offset (xsd:string)
  • DC 옵셋 (xsd:string)
  • Discrete fourier transform (xsd:string)
  • Phasor estimation (xsd:string)
  • Prostective relay (xsd:string)
  • Relaying signals (xsd:string)
  • 페이져 연산 (xsd:string)
  • 푸리에 변환 (xsd:string)
dcterms:title
  • 지수 감쇄하는 DC 옵셋 영향을 제거한 푸리에 변환 기반 페이져 연산 기법 (xsd:string)
rdf:type
nlon:volumeOfNLK
  • 57(9) (xsd:string)