Impact of capacitive coupling circuit on online impulse frequency response of a power transformer
© 2015 IEEE. Detecting the early signs of mechanical failures of power transformer winding is necessary and is possible with online monitoring techniques. Online impulse frequency response analysis (IFRA) is a promising diagnostic method when a transformer is in service. This paper examines the unre...
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Published: |
Institute of Electrical and Electronics Engineers
2016
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| Online Access: | http://hdl.handle.net/20.500.11937/18563 |
| _version_ | 1848749780465876992 |
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| author | Zhao, Z. Yao, C. Zhao, X. Hashemnia, N. Islam, Syed |
| author_facet | Zhao, Z. Yao, C. Zhao, X. Hashemnia, N. Islam, Syed |
| author_sort | Zhao, Z. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | © 2015 IEEE. Detecting the early signs of mechanical failures of power transformer winding is necessary and is possible with online monitoring techniques. Online impulse frequency response analysis (IFRA) is a promising diagnostic method when a transformer is in service. This paper examines the unrevealed problem existing in the method, namely, the impact of bushing capacitive coupling circuit on online impulse frequency response. An equivalent electrical model of capacitive coupling circuit and transformer winding is established. The frequency response of the capacitive coupling circuit is obtained to study its influence on online impulse frequency response. The parameter variations of capacitive coupling circuit caused by coupling capacitance variation and bushing dielectric breakdown are simulated to investigate their influence on online impulse frequency response signatures. A few experiments are eventually performed to verify the theoretical analysis and simulation results. This paper contributes to the application of online IFRA. |
| first_indexed | 2025-11-14T07:26:23Z |
| format | Journal Article |
| id | curtin-20.500.11937-18563 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:26:23Z |
| publishDate | 2016 |
| publisher | Institute of Electrical and Electronics Engineers |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-185632017-09-13T13:44:34Z Impact of capacitive coupling circuit on online impulse frequency response of a power transformer Zhao, Z. Yao, C. Zhao, X. Hashemnia, N. Islam, Syed © 2015 IEEE. Detecting the early signs of mechanical failures of power transformer winding is necessary and is possible with online monitoring techniques. Online impulse frequency response analysis (IFRA) is a promising diagnostic method when a transformer is in service. This paper examines the unrevealed problem existing in the method, namely, the impact of bushing capacitive coupling circuit on online impulse frequency response. An equivalent electrical model of capacitive coupling circuit and transformer winding is established. The frequency response of the capacitive coupling circuit is obtained to study its influence on online impulse frequency response. The parameter variations of capacitive coupling circuit caused by coupling capacitance variation and bushing dielectric breakdown are simulated to investigate their influence on online impulse frequency response signatures. A few experiments are eventually performed to verify the theoretical analysis and simulation results. This paper contributes to the application of online IFRA. 2016 Journal Article http://hdl.handle.net/20.500.11937/18563 10.1109/TDEI.2015.005518 Institute of Electrical and Electronics Engineers restricted |
| spellingShingle | Zhao, Z. Yao, C. Zhao, X. Hashemnia, N. Islam, Syed Impact of capacitive coupling circuit on online impulse frequency response of a power transformer |
| title | Impact of capacitive coupling circuit on online impulse frequency response of a power transformer |
| title_full | Impact of capacitive coupling circuit on online impulse frequency response of a power transformer |
| title_fullStr | Impact of capacitive coupling circuit on online impulse frequency response of a power transformer |
| title_full_unstemmed | Impact of capacitive coupling circuit on online impulse frequency response of a power transformer |
| title_short | Impact of capacitive coupling circuit on online impulse frequency response of a power transformer |
| title_sort | impact of capacitive coupling circuit on online impulse frequency response of a power transformer |
| url | http://hdl.handle.net/20.500.11937/18563 |