Remote diagnosis of overhead line insulation defects

P.J. Moore, I.E. Portugues, Ian Glover

Research output: Contribution to conferencePaper

22 Citations (Scopus)

Abstract

High voltage insulation defects cause partial discharges (PD) which can be detected through the reception of radiated radio frequency (rf) impulses. The paper describes a method of detecting insulation defects on overhead lines using vehicle mounted rf measuring equipment. The equipment is based on a 4 antenna array that is directly sampled using digital equipment with a bandwidth of 1 GHz. The results are analysed by firstly estimating the time delays apparent between the 4 antennas. Secondly, using the time delays, bearing and RMS time delay error information is calculated that allows identification of the PD source. The equipment has been tested in the field on a 132 kV overhead line defect that was initially reported to a radio spectrum management agency. The results show that equipment has the sensitivity to identify the defective insulator string.
Original languageEnglish
Pages1831-1835
Number of pages5
DOIs
Publication statusPublished - Jun 2004
EventIEEE-Power-Engineering-Society General Meeting 2004 - Denver, United States
Duration: 6 Jun 200410 Jun 2004

Conference

ConferenceIEEE-Power-Engineering-Society General Meeting 2004
CountryUnited States
CityDenver
Period6/06/0410/06/04

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Keywords

  • remote diagnosis
  • overhead line
  • insulation defects
  • partial discharge
  • radio frequency

Cite this

Moore, P. J., Portugues, I. E., & Glover, I. (2004). Remote diagnosis of overhead line insulation defects. 1831-1835 . Paper presented at IEEE-Power-Engineering-Society General Meeting 2004, Denver, United States. https://doi.org/10.1109/PES.2004.1373196