Improvement of breakdown and flashover properties against thermal aging of oil paper insulation through addition of TiO2 nanoparticles
Abstract TiO2 nanoparticles can improve the electrical performance of oil paper insulation. In this study, 10 nm TiO2 nanoparticles were prepared and dispersed into transformer oil, and then immerse pressboards in it to obtain nanofluid impregnated pressboards (NP). Its thermal aging was accelerated...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2023-02-01
|
| Series: | IET Generation, Transmission & Distribution |
| Subjects: | |
| Online Access: | https://doi.org/10.1049/gtd2.12709 |
| _version_ | 1797905429048590336 |
|---|---|
| author | Meng Huang Sai Li Lei Zhang Yuanxin Yao Yuzhen Lv Xin Chen Wenli Pang |
| author_facet | Meng Huang Sai Li Lei Zhang Yuanxin Yao Yuzhen Lv Xin Chen Wenli Pang |
| author_sort | Meng Huang |
| collection | DOAJ |
| description | Abstract TiO2 nanoparticles can improve the electrical performance of oil paper insulation. In this study, 10 nm TiO2 nanoparticles were prepared and dispersed into transformer oil, and then immerse pressboards in it to obtain nanofluid impregnated pressboards (NP). Its thermal aging was accelerated together with the reference sample at 130°C for 36 days. Analyzing the acid value in the oil, polymerization degree, surface topography, AC breakdown strength, surface flashover characteristics and surface potential decay characteristics. It was observed that TiO2 nanoparticles can reduce the acid value and improve AC breakdown strength of oil. However, the degree of polymerization and surface appearance of NP and oil impregnated pressboards (OP) during thermal aging did not differ significantly. During the aging process, the energy level of pressboard surface traps shifted first towards the shallow and then gradually towards the deep. During all the aging stages, the surface flashover voltage of NP was always higher or close to that of OP. The mechanism of TiO2 nanoparticles improving the breakdown and surface flashover characteristics of oil–paper insulation during thermal aging is discussed from the perspective of water molecules and aging by‐products adsorption and introduction of shallow traps by nanoparticles. |
| first_indexed | 2024-04-10T10:05:08Z |
| format | Article |
| id | doaj.art-eeb77b9fc4f5437982c4e62bf884ee61 |
| institution | Directory Open Access Journal |
| issn | 1751-8687 1751-8695 |
| language | English |
| last_indexed | 2024-04-10T10:05:08Z |
| publishDate | 2023-02-01 |
| publisher | Wiley |
| record_format | Article |
| series | IET Generation, Transmission & Distribution |
| spelling | doaj.art-eeb77b9fc4f5437982c4e62bf884ee612023-02-16T03:26:08ZengWileyIET Generation, Transmission & Distribution1751-86871751-86952023-02-0117482183110.1049/gtd2.12709Improvement of breakdown and flashover properties against thermal aging of oil paper insulation through addition of TiO2 nanoparticlesMeng Huang0Sai Li1Lei Zhang2Yuanxin Yao3Yuzhen Lv4Xin Chen5Wenli Pang6State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power University Beijing People's Republic of ChinaState Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power University Beijing People's Republic of ChinaState Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power University Beijing People's Republic of ChinaState Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power University Beijing People's Republic of ChinaSchool of Energy, Power and Mechanical Engineering North China Electric Power University Beijing People's Republic of ChinaState Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power University Beijing People's Republic of ChinaState Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power University Beijing People's Republic of ChinaAbstract TiO2 nanoparticles can improve the electrical performance of oil paper insulation. In this study, 10 nm TiO2 nanoparticles were prepared and dispersed into transformer oil, and then immerse pressboards in it to obtain nanofluid impregnated pressboards (NP). Its thermal aging was accelerated together with the reference sample at 130°C for 36 days. Analyzing the acid value in the oil, polymerization degree, surface topography, AC breakdown strength, surface flashover characteristics and surface potential decay characteristics. It was observed that TiO2 nanoparticles can reduce the acid value and improve AC breakdown strength of oil. However, the degree of polymerization and surface appearance of NP and oil impregnated pressboards (OP) during thermal aging did not differ significantly. During the aging process, the energy level of pressboard surface traps shifted first towards the shallow and then gradually towards the deep. During all the aging stages, the surface flashover voltage of NP was always higher or close to that of OP. The mechanism of TiO2 nanoparticles improving the breakdown and surface flashover characteristics of oil–paper insulation during thermal aging is discussed from the perspective of water molecules and aging by‐products adsorption and introduction of shallow traps by nanoparticles.https://doi.org/10.1049/gtd2.12709nanoparticlespaperthermal analysiselectric breakdownelectric field measurementinsulating oils |
| spellingShingle | Meng Huang Sai Li Lei Zhang Yuanxin Yao Yuzhen Lv Xin Chen Wenli Pang Improvement of breakdown and flashover properties against thermal aging of oil paper insulation through addition of TiO2 nanoparticles IET Generation, Transmission & Distribution nanoparticles paper thermal analysis electric breakdown electric field measurement insulating oils |
| title | Improvement of breakdown and flashover properties against thermal aging of oil paper insulation through addition of TiO2 nanoparticles |
| title_full | Improvement of breakdown and flashover properties against thermal aging of oil paper insulation through addition of TiO2 nanoparticles |
| title_fullStr | Improvement of breakdown and flashover properties against thermal aging of oil paper insulation through addition of TiO2 nanoparticles |
| title_full_unstemmed | Improvement of breakdown and flashover properties against thermal aging of oil paper insulation through addition of TiO2 nanoparticles |
| title_short | Improvement of breakdown and flashover properties against thermal aging of oil paper insulation through addition of TiO2 nanoparticles |
| title_sort | improvement of breakdown and flashover properties against thermal aging of oil paper insulation through addition of tio2 nanoparticles |
| topic | nanoparticles paper thermal analysis electric breakdown electric field measurement insulating oils |
| url | https://doi.org/10.1049/gtd2.12709 |
| work_keys_str_mv | AT menghuang improvementofbreakdownandflashoverpropertiesagainstthermalagingofoilpaperinsulationthroughadditionoftio2nanoparticles AT saili improvementofbreakdownandflashoverpropertiesagainstthermalagingofoilpaperinsulationthroughadditionoftio2nanoparticles AT leizhang improvementofbreakdownandflashoverpropertiesagainstthermalagingofoilpaperinsulationthroughadditionoftio2nanoparticles AT yuanxinyao improvementofbreakdownandflashoverpropertiesagainstthermalagingofoilpaperinsulationthroughadditionoftio2nanoparticles AT yuzhenlv improvementofbreakdownandflashoverpropertiesagainstthermalagingofoilpaperinsulationthroughadditionoftio2nanoparticles AT xinchen improvementofbreakdownandflashoverpropertiesagainstthermalagingofoilpaperinsulationthroughadditionoftio2nanoparticles AT wenlipang improvementofbreakdownandflashoverpropertiesagainstthermalagingofoilpaperinsulationthroughadditionoftio2nanoparticles |