Comparative Study of Partial Discharge Localization based on UHF Detection Methods

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CIRED 2019 - 1076.pdf (734.65 KB)

Paper number

1076

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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.

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Publisher

AIM

Date

2019-06-03

Published in

CIRED 2019 Conference

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