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Improved Methods for UHF Localization of Partial Discharge in Air-Insulated Substations

Author

Listed:
  • Ahmed Rashwan

    (School of Engineering, Cardiff University, Queen’s Buildings, The Parade, Cardiff CF24 3AA, UK)

  • Alistair Reid

    (School of Engineering, Cardiff University, Queen’s Buildings, The Parade, Cardiff CF24 3AA, UK)

Abstract

A time-difference-of-arrival-based partial discharge (PD) location system that utilises prior knowledge of substation layout is presented. We propose a new time delay estimator that employs onset detection techniques and demonstrate, through experimental results, that it is at least 2.8 times more accurate than other conventional estimators. Using knowledge of a substation’s layout, we develop a minimum mean-square-error (MMSE)-based location estimator and an algorithm that optimises antenna placement to maximise location accuracy in regions occupied by high-voltage equipment. Simulation results show that a system that uses the proposed techniques is 5.9 times more accurate than a more conventional system in a high-noise environment.

Suggested Citation

  • Ahmed Rashwan & Alistair Reid, 2023. "Improved Methods for UHF Localization of Partial Discharge in Air-Insulated Substations," Energies, MDPI, vol. 16(10), pages 1-13, May.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:10:p:4221-:d:1151778
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