Study on time-frequency extractors for partial discharge pulse current used in sequence grouping and identification

نویسندگان

  • Si WENRONG
  • Fu CHENZHAO
  • Gao KAI
  • Huang HUA
چکیده

This paper introduces a general way to make feature extraction for partial discharge (PD) pulse waveshape used in sequence grouping resorting with equivalent time-frequency method. A digital ac PD pulse detection system with bandwidth of 10 kHz 40 MHz and sampling rate of 100 MS/s is introduced, which was developed to study those feature extractors. Simulation and test results with gas insulated switch (GIS) show that they are practical and effective to develop PD detection system with grouping and identification technique. Streszczenie. Dokonano ekstrakcji impulsu wyładowania niezupełnego przy wykorzystaniu odpowiedniej metody czasowo-częstotliwościowej. Wykorzystano system cyfrowy z pasmem 10 kHz – 40 MHz i częstotliwością próbkowania 100 MS/s. Badania wyłącznika gazowego potwierdziły skuteczność metody. (Czasowo-częstotliwościowa ekstrakcja i identyfikacja impulsu wyładowania niezupełnego)

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تاریخ انتشار 2011