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Adaptive Single-Pole Auto-Reclosing Scheme Based on Secondary Arc Voltage Harmonic Signatures

Author

Listed:
  • Joon Han

    (KEPCO Research Institute (KEPRI), Daejeon 34056, Korea
    Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16410, Korea)

  • Chul-Moon Lee

    (Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16410, Korea)

  • Chul-Hwan Kim

    (Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16410, Korea)

Abstract

This paper presents an advanced adaptive single-pole auto-reclosing (ASPAR) scheme based on harmonic characteristics of the secondary arc voltage. For analysis of the harmonics, short-time Fourier transform (STFT), which is a universal signal processing tool for transforming a signal from the time domain to the frequency domain, is utilized. STFT is applied to extract the abnormal harmonic signature from the voltage waveform of a faulted phase when a transient or permanent fault occurs on a power transmission line. The proposed scheme uses the total harmonic distortion (THD) factor to determine the fault type based on the variation and distortion characteristics of the harmonics. Harmonic components in the order of odd/even are also utilized to detect the secondary arc extinction time and guide the reclosing operation. Based on these factors, two coordinated algorithms are proposed to reduce the unnecessary dead time in conventional auto-reclosing methods and enable an optimal reclosing operation in the event of a single-pole to ground fault. The proposed ASPAR scheme is implemented using the electromagnetic transient program (EMTP), and various simulations are conducted for actual 345 and 765 kV Korean study systems.

Suggested Citation

  • Joon Han & Chul-Moon Lee & Chul-Hwan Kim, 2021. "Adaptive Single-Pole Auto-Reclosing Scheme Based on Secondary Arc Voltage Harmonic Signatures," Energies, MDPI, vol. 14(5), pages 1-19, February.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:5:p:1311-:d:507578
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