Remote diagnosis of overhead line insulation defects

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

doi:10.1109/PES.2004.1373196

Remote diagnosis of overhead line insulation defects

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

Electronic And Electrical Engineering

Research output: Contribution to conference › Paper

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 language	English
Pages	1831-1835
Number of pages	5
DOIs	https://doi.org/10.1109/PES.2004.1373196
Publication status	Published - Jun 2004
Event	IEEE-Power-Engineering-Society General Meeting 2004 - Denver, United States Duration: 6 Jun 2004 → 10 Jun 2004

Conference

Conference	IEEE-Power-Engineering-Society General Meeting 2004
Country	United States
City	Denver
Period	6/06/04 → 10/06/04

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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

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Access to Document

10.1109/PES.2004.1373196