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Summary

A novel bio-inspired printed monopole antenna (PMA) effectively monitors partial discharge (PD) in high-voltage systems. This optimized sensor offers high sensitivity and immunity to interference, outperforming standard methods.

Keywords:
UHFUWBbio-inspired designmonitoringpartial dischargeprinted monopole antenna

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Area of Science:

  • Electrical Engineering
  • Electromagnetics
  • Materials Science

Background:

  • Partial discharge (PD) detection is crucial for high-voltage insulating system integrity.
  • Existing monitoring methods face limitations in sensitivity and interference immunity.
  • Bio-inspired designs offer potential for novel sensor development.

Purpose of the Study:

  • To develop and evaluate a bio-inspired printed monopole antenna (PMA) for PD monitoring.
  • To optimize the PMA sensor for detecting electromagnetic signals from PD events.
  • To assess the PMA's performance against the standard IEC 60270 method.

Main Methods:

  • Designed a PMA using a bio-inspired patch geometry (Inga Marginata leaf) and truncated ground plane for ultra-wideband (UWB) operation.
  • Fabricated and measured antenna characteristics (frequency, gain) in an anechoic chamber.
  • Conducted simultaneous comparative tests with the IEC 60270 method using a PD generator.

Main Results:

  • The PMA demonstrated an operating bandwidth covering the PD frequency range with a mean gain of 3.63 dBi.
  • The sensor detected PD signals at half the voltage levels compared to the IEC method.
  • The PMA exhibited immunity to corona discharges, a common interference source.

Conclusions:

  • The bio-inspired PMA is an optimized sensor for PD detection in high-voltage systems.
  • The developed antenna is suitable for substation applications due to its sensitivity and robustness.
  • This approach offers a promising alternative for reliable PD monitoring.