Application of the integrated AE and HFCT sensors for online Dry-type Transformer Partial Discharge Monitoring. Case study
Journal article
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Strategic Research Themes
Publication Details
Author list: TIKAKOSOL K., TANITTEERAPAN T., MUNGKUNG N.
Publication year: 2021
Volume number: 97
Issue number: 3
Start page: 105
End page: 111
Number of pages: 7
ISSN: 0033-2097
eISSN: 2449-9544
Languages: English-Great Britain (EN-GB)
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Abstract
This study proposes a measurement technique to identify and determine the occurrence of partial discharge in the insulation of Dry-type transformers, as well as their criteria level. Concerning IEC 62478, the four AE (acoustic emission) sensors were used to determine the PD sources and one HFCT (High-Frequency Current Transducer) technique was to identify the PD source and the criteria level. This process accurately identified the PD source location occurring at any position in a transformer. The gap time was 3.2 ms. The level of partial discharge for this case study is Major PD that means soon monitoring every 3 months. The results of this technique could prevent insulation failure of a transformer in time. © 2021 Wydawnictwo SIGMA-NOT. All rights reserved.
Keywords
Dry-type transformer, High frequency current transducer
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