Research on the Alternating Current Properties of Cellulose–Innovative Bio-Oil Nanocomposite as the Fundamental Component of Power Transformer Insulation—Determination of Nanodroplet Dimensions and the Distances Between Them
Artykuł w czasopiśmie
MNiSW
140
Lista 2024
| Status: | |
| Autorzy: | Kierczyński Konrad, Kołtunowicz Tomasz, Bondariev Vitalii, Okal Paweł, Zenker Marek, Szrot Marek, Molenda Paweł, Cichoń Andrzej, Żukowski Paweł |
| Dyscypliny: | |
| Aby zobaczyć szczegóły należy się zalogować. | |
| Rok wydania: | 2025 |
| Wersja dokumentu: | Drukowana | Elektroniczna |
| Język: | angielski |
| Numer czasopisma: | 23 |
| Wolumen/Tom: | 18 |
| Numer artykułu: | 6311 |
| Strony: | 1 - 20 |
| Impact Factor: | 3,2 |
| Scopus® Cytowania: | 0 |
| Bazy: | Scopus |
| Efekt badań statutowych | NIE |
| Finansowanie: | The research was supported from the state budget within the programme of the Ministry of Education and Science entitled ‘Science for Society II’ project no. NdS-II/SP/0173/2024/01 total project value PLN 1,462,590.80 as well as partly from a subsidy from the Ministry of Science and Higher Education for the Lublin University of Technology as funds allocated for activities in the scientific disciplines of Automation, Electronics, Electrical Engineering and Space Technologies (grants: FD-20/EE-2/701, FD-20/EE-2/702, FD-20/EE-2/703 and FD-20/EE-2/705). |
| Materiał konferencyjny: | NIE |
| Publikacja OA: | TAK |
| Licencja: | |
| Sposób udostępnienia: | Witryna wydawcy |
| Wersja tekstu: | Ostateczna wersja opublikowana |
| Czas opublikowania: | W momencie opublikowania |
| Data opublikowania w OA: | 30 listopada 2025 |
| Abstrakty: | angielski |
| The paper presents measurements of frequency dependence of conductivity and real components of complex permittivity of a nanocomposite consisting of electrical pressboard, bio-insulating oil and water nanodroplets with moisture content ranging from 0.6 wt.% to 5 wt.%. Bio-oil meets high environmental requirements—it is fully biodegradable, and its combustion products are significantly less harmful than those of mineral oil. In addition, the use of bio-oil reduces the carbon footprint of power transformer production. The quantum mechanical phenomenon of electron tunnelling between potential wells created by water nanodroplets was used to analyze the experimental results obtained. The study determined the effect of moisture content on the relative relaxation time values. On this basis, the number of water molecules in nanodroplets, their diameters and the concentration of nanodroplets depending on moisture content were determined. The distances over which electrons tunnel in moist pressboard impregnated with bio-oil were determined. These values are the expected values of the probability distribution of the distance between neighbouring nanodroplets. The values of the number of water molecules in nanodroplets are also the expected values of the probability distribution of the number of molecules in nanodroplets. It has been established that during many years of transformer life, several parallel processes occur as the moisture content in bio-oil-impregnated pressboard increases. One of them involves the accumulation of water molecules collected in the pressboard in nanodroplets. The second is an increase in the concentration of nanodroplets. The third is an increase in the average number of water molecules in nanodroplets. |
