고조파 왜곡을 고려한 디지털 보호계전기의 설계

The Design of Digital Protection Relay under Harmonic Distortion

  • 김병진 (현대중공업(주) 기계전기연구소) ;
  • 조철희 (현대중공업(주) 기계전기연구소) ;
  • 이보인 (현대중공업(주) 기계전기연구소) ;
  • 김정한 (현대중공업(주) 기계전기연구소)
  • Kim, Beung-Jin (Electro-Mechanical Research Institude, Hyundai Heavy Industries. Co, Ltd) ;
  • Cho, Chul-Hee (Electro-Mechanical Research Institude, Hyundai Heavy Industries. Co, Ltd) ;
  • Lee, Bo-In (Electro-Mechanical Research Institude, Hyundai Heavy Industries. Co, Ltd) ;
  • Kim, Jung-Han (Electro-Mechanical Research Institude, Hyundai Heavy Industries. Co, Ltd)
  • 발행 : 2002.07.10

초록

In this study, the measurement part in which the Fast Fourier Transform module and orthogonal filter are included is proposed. Protection relay should has a high precision and concurrently real-time response. Because FFT routine give micro-processor heavy burden and orthogonal filter reduces precision, both FFT module and orthogonal filter are designed to have different sampling frequency.

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