Design of partial discharge testing system under continuous square pulse voltage

Peng Wang, Guangning Wu, Yang Luo, Yiqiang Zhang, Kaijiang Cao

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

In order to solve the problems of strong pulse power disturbance and wide frequency&high speed data acquisition requirements during partial discharge(PD) measurements under continuous square pulse voltage condition, we presented a PD data acquiring, transferring and pulse abstracting system with wide band and high frequency, which could be used for PD testing under continuous square pulse voltage with rising time of 100 ns. In order to suppress strong disturbance from pulse power, we designed 12-step Butterworth filters of different pass bands and analyzed their de-noising capabilities, by which the suitable parameters of filter used in practical application was offered. Based on virtual instrument technology, high speed PD data transferring for digital oscilloscope was realized, and de-noising and PD pulses peak abstracting were achieved combined using time-domain threshold value, phase windows and polarity distinguishing technologies. This system can be used to record long time PD continuously, while obtaining multi cycles discharge data and statistics characteristics, and to investigate PD characteristics of various materials for the purpose of exploring their insulation failure mechanism under continuous square pulse voltage condition.

Original languageEnglish
Pages (from-to)587-593
Number of pages7
JournalGaodianya Jishu/High Voltage Engineering
Volume38
Issue number3
DOIs
StatePublished - Mar 2012
Externally publishedYes

Keywords

  • Data acquiration
  • Digital filter
  • Insulation aging
  • Inverter-fed motor
  • Partial discharge(PD)
  • Square pulse
  • Virtual instrument

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