Experiences with non-intrusive monitoring of distribution transformers based on the on-line frequency response
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| Format: | Artículo científico |
| Langue: | en |
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Universidad Nacional de Colombia
2015
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| _version_ | 1876445414918455296 |
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| author | E. Gomez-Luna |
| author_facet | E. Gomez-Luna |
| contents | Experiences with non-intrusive monitoring of distribution transformers based on the on-line frequency response E. Gomez-Luna C. Duarte G. Aponte J. Pleite K. W. Goossen Ingeniería on non energy line IFRA Transformers The following article presents the results obtained in experiences that use the Impulse Frequency Response Analysis (IFRA) method with a transformer in service. The IFRA method has been implemented in order to transform the transient signals to the frequency domain using Discrete Fourier Transform (DFT). However, it can be considered that the DFT is not the most suitable tool for this type of analysis, since, by definition, this tool is useful for processing stationary signals. Taking that into consideration, the analysis of transient signals could be hypothetically improved by using continuous wavelet transform (CWT), given their variable time/frequency resolution. The analysis of transient signals in Wavelet domain has improved the repeatability of the frequency response curves, as it has been ob-served in experimental results. The proposed on-line IFRA method, based on Wavelet transform, was validated under load and no-load conditions on a 150 kVA three-phase transformer 13200/225 Volts, in the Campus of the Universidad del Valle, Cali, Colombia. 2015 artículo científico 0120-5609 https://www.redalyc.org/articulo.oa?id=64338498010 en http://www.redalyc.org/revista.oa?id=643 Ingeniería e Investigación application/pdf Universidad Nacional de Colombia Ingeniería e Investigación (Colombia) Num.1 Vol.35 |
| format | Artículo científico |
| id | redalyc_64338498010 |
| institution | Redalyc |
| language | en |
| publishDate | 2015 |
| publisher | Universidad Nacional de Colombia |
| spellingShingle | Experiences with non-intrusive monitoring of distribution transformers based on the on-line frequency response E. Gomez-Luna Ingeniería on non energy line IFRA Transformers Experiences with non-intrusive monitoring of distribution transformers based on the on-line frequency response E. Gomez-Luna C. Duarte G. Aponte J. Pleite K. W. Goossen Ingeniería on non energy line IFRA Transformers The following article presents the results obtained in experiences that use the Impulse Frequency Response Analysis (IFRA) method with a transformer in service. The IFRA method has been implemented in order to transform the transient signals to the frequency domain using Discrete Fourier Transform (DFT). However, it can be considered that the DFT is not the most suitable tool for this type of analysis, since, by definition, this tool is useful for processing stationary signals. Taking that into consideration, the analysis of transient signals could be hypothetically improved by using continuous wavelet transform (CWT), given their variable time/frequency resolution. The analysis of transient signals in Wavelet domain has improved the repeatability of the frequency response curves, as it has been ob-served in experimental results. The proposed on-line IFRA method, based on Wavelet transform, was validated under load and no-load conditions on a 150 kVA three-phase transformer 13200/225 Volts, in the Campus of the Universidad del Valle, Cali, Colombia. 2015 artículo científico 0120-5609 https://www.redalyc.org/articulo.oa?id=64338498010 en http://www.redalyc.org/revista.oa?id=643 Ingeniería e Investigación application/pdf Universidad Nacional de Colombia Ingeniería e Investigación (Colombia) Num.1 Vol.35 |
| title | Experiences with non-intrusive monitoring of distribution transformers based on the on-line frequency response |
| topic | Ingeniería on non energy line IFRA Transformers |
| url | https://www.redalyc.org/articulo.oa?id=64338498010 |