Degradation Processes in Shield-Centring Elements of Surge Arresters
This paper presents the results of testing samples of shield-centering elements from medium-voltage surge arresters. The elements were made of TSE glass textolite. The elements have been dismantled from different operated surge arresters, which were subjected to discharge currents (short-circuit cur...
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| Format: | Article |
| Language: | English |
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Polish Academy of Sciences
2023-03-01
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| Series: | Archives of Metallurgy and Materials |
| Subjects: | |
| Online Access: | https://journals.pan.pl/Content/126259/PDF/AMM-2023-1-35-Ranachowski.pdf |
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| author | P. Papliński H. Śmietanka P. Ranachowski Z. Ranachowski K. Wieczorek S. Kudela Jr |
| author_facet | P. Papliński H. Śmietanka P. Ranachowski Z. Ranachowski K. Wieczorek S. Kudela Jr |
| author_sort | P. Papliński |
| collection | DOAJ |
| description | This paper presents the results of testing samples of shield-centering elements from medium-voltage surge arresters. The elements were made of TSE glass textolite. The elements have been dismantled from different operated surge arresters, which were subjected to discharge currents (short-circuit currents) of different intensity and duration. The discharge currents led to degradation of the tested elements with various degrees of advancement. The degradation was investigated using microscopic methods and energy-dispersive X-ray spectroscopy (EDS). Changes in the content of elements of the surface of textolite materials – as the degradation progresses – were documented. It was found that high discharge current flows resulted in melting of the organic binder, epoxy resin, especially its surface layer. Partial charring and even burning of the resin was noticeable. Furthermore, it was found that with increasing degradation on the surface of the TSE laminate, the carbon and oxygen content, which are part of the organic resin, decreases. Simultaneously the amount of silicon, calcium and aluminium, which are present in the glass fibres, increases. The charring effect of the resin and the formation of conductive paths result in a decrease in the performance of surge arresters and their subsequent failure. |
| first_indexed | 2024-04-10T00:08:54Z |
| format | Article |
| id | doaj.art-75995fc5b2f64562b14a7a059fcfe4c8 |
| institution | Directory Open Access Journal |
| issn | 2300-1909 |
| language | English |
| last_indexed | 2024-04-10T00:08:54Z |
| publishDate | 2023-03-01 |
| publisher | Polish Academy of Sciences |
| record_format | Article |
| series | Archives of Metallurgy and Materials |
| spelling | doaj.art-75995fc5b2f64562b14a7a059fcfe4c82023-03-16T15:02:45ZengPolish Academy of SciencesArchives of Metallurgy and Materials2300-19092023-03-01vol. 68No 1237242https://doi.org/10.24425/amm.2023.141499Degradation Processes in Shield-Centring Elements of Surge ArrestersP. Papliński0H. Śmietanka1P. Ranachowski2Z. Ranachowski3https://orcid.org/0000-0003-2447-4705K. Wieczorek4S. Kudela Jr5Institute of Power Engineering – Research Institute, 8 Mory Str., 01-330 Warsaw, PolandInstitute of Power Engineering – Research Institute, 8 Mory Str., 01-330 Warsaw, PolandInstitute of Fundamental Technological Research PAS, 5b Pawińskiego Str., 02-106 Warsaw, PolandInstitute of Fundamental Technological Research PAS, 5b Pawińskiego Str., 02-106 Warsaw, PolandWrocław University of Science And Technology, Faculty of Electrical Engineering, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, PolandInstitute of Materials and Machine Mechanics Slovak Academy of Sciences, Dúbravská Cesta 9/6319, 845 13 Bratislava, SlovakiaThis paper presents the results of testing samples of shield-centering elements from medium-voltage surge arresters. The elements were made of TSE glass textolite. The elements have been dismantled from different operated surge arresters, which were subjected to discharge currents (short-circuit currents) of different intensity and duration. The discharge currents led to degradation of the tested elements with various degrees of advancement. The degradation was investigated using microscopic methods and energy-dispersive X-ray spectroscopy (EDS). Changes in the content of elements of the surface of textolite materials – as the degradation progresses – were documented. It was found that high discharge current flows resulted in melting of the organic binder, epoxy resin, especially its surface layer. Partial charring and even burning of the resin was noticeable. Furthermore, it was found that with increasing degradation on the surface of the TSE laminate, the carbon and oxygen content, which are part of the organic resin, decreases. Simultaneously the amount of silicon, calcium and aluminium, which are present in the glass fibres, increases. The charring effect of the resin and the formation of conductive paths result in a decrease in the performance of surge arresters and their subsequent failure.https://journals.pan.pl/Content/126259/PDF/AMM-2023-1-35-Ranachowski.pdfsurge arrestertse glass textolitedischarge (short circuit) currenteds method |
| spellingShingle | P. Papliński H. Śmietanka P. Ranachowski Z. Ranachowski K. Wieczorek S. Kudela Jr Degradation Processes in Shield-Centring Elements of Surge Arresters Archives of Metallurgy and Materials surge arrester tse glass textolite discharge (short circuit) current eds method |
| title | Degradation Processes in Shield-Centring Elements of Surge Arresters |
| title_full | Degradation Processes in Shield-Centring Elements of Surge Arresters |
| title_fullStr | Degradation Processes in Shield-Centring Elements of Surge Arresters |
| title_full_unstemmed | Degradation Processes in Shield-Centring Elements of Surge Arresters |
| title_short | Degradation Processes in Shield-Centring Elements of Surge Arresters |
| title_sort | degradation processes in shield centring elements of surge arresters |
| topic | surge arrester tse glass textolite discharge (short circuit) current eds method |
| url | https://journals.pan.pl/Content/126259/PDF/AMM-2023-1-35-Ranachowski.pdf |
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