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Study on material and mechanical characteristics of silicone rubber shed of field-aged 110 kV composite insulators
Composite insulators have excellent performance and are more and more widely used in power grid. The performance of composite insulators with different service duration will decline in varying degrees, which could pose a threat to the safe operation of power grid. In order to investigate the influen...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10558433/ https://www.ncbi.nlm.nih.gov/pubmed/37803036 http://dx.doi.org/10.1038/s41598-023-35701-8 |
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author | Mu, Lin Wang, Bo Hao, Jinpeng Fang, Ziyi Wang, Yu |
author_facet | Mu, Lin Wang, Bo Hao, Jinpeng Fang, Ziyi Wang, Yu |
author_sort | Mu, Lin |
collection | PubMed |
description | Composite insulators have excellent performance and are more and more widely used in power grid. The performance of composite insulators with different service duration will decline in varying degrees, which could pose a threat to the safe operation of power grid. In order to investigate the influence of service duration and electric field strength on insulator shed performance, the sheds at different positions of insulators with different service duration are sampled. The hydrophobicity, material and mechanical properties of the samples are tested, and then the micro material properties tests are performed in terms of SEM, FTIR and XPS tests. Based on the above test results, the aging law and its mechanism of silicone rubber sheds are analyzed. The results reveal that the performance of insulator shed gradually decline with the increase of service life. The hydrophobicity and hardness of high-voltage end insulator are similar to that of middle section insulator, while other parameters are obviously different, indicating that the electric field can aggravate the aging. FTIR results show that the main chain and hydrophobic side chain of silicone rubber are destroyed, and the oxygen-containing groups increased, indicating that thermal oxygen aging occurred during operation. XPS and SEM results show that the crosslinking degree of silicone rubber increases and the porosity increases. The above changes in the microstructure of silicone rubber lead to the decline of insulator performance. |
format | Online Article Text |
id | pubmed-10558433 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-105584332023-10-08 Study on material and mechanical characteristics of silicone rubber shed of field-aged 110 kV composite insulators Mu, Lin Wang, Bo Hao, Jinpeng Fang, Ziyi Wang, Yu Sci Rep Article Composite insulators have excellent performance and are more and more widely used in power grid. The performance of composite insulators with different service duration will decline in varying degrees, which could pose a threat to the safe operation of power grid. In order to investigate the influence of service duration and electric field strength on insulator shed performance, the sheds at different positions of insulators with different service duration are sampled. The hydrophobicity, material and mechanical properties of the samples are tested, and then the micro material properties tests are performed in terms of SEM, FTIR and XPS tests. Based on the above test results, the aging law and its mechanism of silicone rubber sheds are analyzed. The results reveal that the performance of insulator shed gradually decline with the increase of service life. The hydrophobicity and hardness of high-voltage end insulator are similar to that of middle section insulator, while other parameters are obviously different, indicating that the electric field can aggravate the aging. FTIR results show that the main chain and hydrophobic side chain of silicone rubber are destroyed, and the oxygen-containing groups increased, indicating that thermal oxygen aging occurred during operation. XPS and SEM results show that the crosslinking degree of silicone rubber increases and the porosity increases. The above changes in the microstructure of silicone rubber lead to the decline of insulator performance. Nature Publishing Group UK 2023-10-06 /pmc/articles/PMC10558433/ /pubmed/37803036 http://dx.doi.org/10.1038/s41598-023-35701-8 Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Mu, Lin Wang, Bo Hao, Jinpeng Fang, Ziyi Wang, Yu Study on material and mechanical characteristics of silicone rubber shed of field-aged 110 kV composite insulators |
title | Study on material and mechanical characteristics of silicone rubber shed of field-aged 110 kV composite insulators |
title_full | Study on material and mechanical characteristics of silicone rubber shed of field-aged 110 kV composite insulators |
title_fullStr | Study on material and mechanical characteristics of silicone rubber shed of field-aged 110 kV composite insulators |
title_full_unstemmed | Study on material and mechanical characteristics of silicone rubber shed of field-aged 110 kV composite insulators |
title_short | Study on material and mechanical characteristics of silicone rubber shed of field-aged 110 kV composite insulators |
title_sort | study on material and mechanical characteristics of silicone rubber shed of field-aged 110 kv composite insulators |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10558433/ https://www.ncbi.nlm.nih.gov/pubmed/37803036 http://dx.doi.org/10.1038/s41598-023-35701-8 |
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