Impact of Concentration of Nanoparticles on Characteristics of Transformer Oil
| Authors | Sumanta Kumar Tripathy1 , M. Madeen Kumar2 |
| Affiliations |
1Gayatri Vidya Parishad College of Engineering (Autonomous), Visakhapatnam, A.P., India 2Sanketika Institute of Technology and Management, Visakhapatanam, A.P., India |
| Е-mail | tripathy@gvpce.ac.in |
| Issue | Volume 12, Year 2020, Number 4 |
| Dates | Received 13 February 2020; revised manuscript received 15 August 2020; published online 25 August 2020 |
| Citation | Sumanta Kumar Tripathy, M. Madeen Kumar, J. Nano- Electron. Phys. 12 No 4, 04019 (2020) |
| DOI | https://doi.org/10.21272/jnep.12(4).04019 |
| PACS Number(s) | 68.37.Hk, 68.55. – a, 78.40. – q |
| Keywords | Cerium oxide, Transformer oil, BDV, XRD (90) . |
| Annotation |
In this study, we investigate the change of breakdown voltage and energy band gap of transformer oil by adding different concentrations varying from 0.01 wt. % to 0.1 wt. % of cerium oxide nanoparticles. Cerium oxide nanoparticles were prepared by sol-gel method with heat treatment at 200 C for four hours. Structural and morphological study of cerium oxide was carried out by XRD and SEM. The average crystallite size was 17 nm with well-defined peaks which endorses crystalline structure of the nanoparticle. To confirm purity of cerium oxide EDX test was carried out which revealed 99 % atomic weight percentage of O and Ce and confirmed the formation of CeO2 compound. The breakdown voltage experiment was performed in transformer oil testing kit. The testing was carried out six times for liquid test sample according to IS 6792, IEC 60156 for different concentration of CeO2. It was observed a sharp change in breakdown voltage for different concentration and BDV is optimum for 0.05 wt. % of cerium oxide. To investigate the energy band-gap of the prepared nanofluid UV-Vis spectrophotometer was used. The transmittance for pure oil and 0.05 wt. % of cerium oxide is 60 %, whereas for other concentrations transmittance is less. From the spectrometer data, the band gap was calculated and it was observed that band gap changes with concentration of cerium oxide in transformer oil and it has maximum of 5.25 eV for 0.05 wt. % of cerium oxide. From this study, we observe the breakdown voltage and band gap of transformer oil is maximum at 0.05 wt. % of cerium oxide nanoparticles. |
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List of References |
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