Enhancing flashover strength along oil/pressboard interface using nanofluids

El-Refaie, El-Sayed M.; Mansour, Diaa‐Eldin A.; Elrahmen, M.K. Abd; Abdo, Mohamed H.

doi:10.1016/j.aej.2020.01.017

Cited by 10 publications

(4 citation statements)

References 29 publications

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“…Also, TiO 2 nanoparticles enhance both the creeping flashover voltage and partial discharge inception voltage of oil-pressboard interface under either AC or impulse voltage stresses as reported in [11]. Two types of nanoparticles (TiO 2 and Al 2 O 3 ) are found to be effective for enhancing the flashover voltage of oil-pressboard interface under static and dynamic conditions [9]. This improvement is explained by the interface double layer for Al 2 O 3 nanoparticles and the electron trapping ability for TiO 2 nanoparticles [9].…”

Section: Introductionmentioning

confidence: 65%

“…Two types of nanoparticles (TiO 2 and Al 2 O 3 ) are found to be effective for enhancing the flashover voltage of oil-pressboard interface under static and dynamic conditions [9]. This improvement is explained by the interface double layer for Al 2 O 3 nanoparticles and the electron trapping ability for TiO 2 nanoparticles [9]. It is also shown that using Al 2 O 3 nanoparticles delay the aging of both transformer oil and oil impregnated pressboard [20].…”

Section: Introductionmentioning

confidence: 97%

“…This improvement comes as nanoparticles attract electrons and hindering their motion. Also, it comes due to the increase in electron trap energy by nanoparticles and the decrease in moisture content in oil [8][9]. There are many researches that concerned with studying the effect of nanoparticles on dielectric properties of transformer oil [11][12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of Temperature on Creeping Flashover Voltage of Nanofilled Oil-Pressboard Insulation

Ibrahim¹,

Nassar²,

Izzularab³

et al. 2020

IEEE Access

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Section: Introductionmentioning

confidence: 65%

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of Temperature on Creeping Flashover Voltage of Nanofilled Oil-Pressboard Insulation

Ibrahim¹,

Nassar²,

Izzularab³

et al. 2020

IEEE Access

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“…Previous studies have proved that nanofluids' thermal and dielectric properties have been significantly improved compared to traditional MO [7][8][9][10][11]. Other researchers indicated that when different types of nanofluids were combined with pressboard insulation, creeping flashover strength and surface discharge were enhanced [12,13]. Furthermore, nanofluids have proven to be more resistant to partial discharges [14,15].…”

Section: Introductionmentioning

confidence: 99%

Dissolved gas analysis and dissipation factor measurement of mineral oil‐based nanofluids under thermal and electrical faults

et al. 2023

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Mineral oil is the most frequent insulating liquid used in oil‐immersed transformers for electrical insulation and heat dissipation. However, oil‐based nanofluids are becoming more popular in scientific research as they have proved to have better dielectric and thermal characteristics. When applying these nanofluids into actual transformers, they would be exposed to thermal and electrical stresses. Thus, The aim of the authors is to investigate the generation pattern of dissolved gases in nanofluids under thermal and electrical faults and to assess the applicability of traditional Dissolved Gas Analysis (DGA) techniques if oil‐based nanofluids are used in transformers. Oil‐based nanofluid samples were prepared using a magnetic stirrer and an ultrasonic homogeniser and then subjected to simulated thermal and electrical faults in the laboratory using properly sealed test cells. Three types of metal oxides, Silicon dioxide, Titanium dioxide, and Aluminium oxide nanoparticles, have been used to prepare nanofluids with 0.02 g/L and 0.04 g/L concentrations. The gases released and dissolved into oil due to the simulated faults were analysed and compared to traditional mineral oil as a benchmark. The dielectric dissipation factor was obtained and analysed for all samples. According to the findings, the presence and concentration of nanoparticles were shown to influence the amount of gases produced. As a result, this research is crucial in guaranteeing that traditional DGA techniques can be employed in transformers that use oil‐based nanofluids.

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Influence of nanoparticles’ polarization on the streamer branching and propagation in nanofluids

Zhang,

Zhou,

et al. 2023

Journal of Molecular Liquids

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Enhancing flashover strength along oil/pressboard interface using nanofluids

Cited by 10 publications

References 29 publications

Effect of Temperature on Creeping Flashover Voltage of Nanofilled Oil-Pressboard Insulation

Effect of Temperature on Creeping Flashover Voltage of Nanofilled Oil-Pressboard Insulation

Dissolved gas analysis and dissipation factor measurement of mineral oil‐based nanofluids under thermal and electrical faults

Influence of nanoparticles’ polarization on the streamer branching and propagation in nanofluids

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