Comparative Study of Partial Discharge Localization based on UHF Detection Methods

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Paper number
1076
Working Group Number
Conference name
CIRED 2019
Conference date
3-6 June 2019
Conference location
Madrid, Spain
Peer-reviewed
Yes
Short title
Convener
Authors
Chai, Hua, University of New South Wales, Australia
Lu, Shibo, University of New South Wales, Australia
Phung, B. T., University of New South Wales, Australia
Mitchell, Steve, Ampcontrol, Australia
Abstract
Partial discharge (PD) monitoring is essential for insulation diagnostic of high voltage power transformers. PD activities can generate electromagnetic waves in the ultra-high frequency (UHF) range. The signals captured from several antennas installed inside the transformer can be analyzed to determine their time of arrival (TOA) and time difference of arrival (TDOA). Then by solving non-linear triangulation equations, the position of the PD source can be found for corrective action. This paper examines the effect of the sensor position on the S-parameter regarding the UHF sensor performance for PD detection. A comparative study of the methods in terms of PD localization based on the UHF method is then carried out. Acoustic, UHF and HFCT sensors are applied in the experiment. The results show that the transformer tank boundary can affect the sensor performance in capturing the signal and the acoustic-UHF triggering method has the highest level of accuracy.
Table of content
Keywords
Publisher
AIM
Date
2019-06-03
Permanent link to this record
https://cired-repository.org/handle/20.500.12455/278
http://dx.doi.org/10.34890/508
ISSN
2032-9644
ISBN
978-2-9602415-0-1