Experimental investigation of transformer oil based nanofluids for applications in distribution transformers

Taro, Mudang; Shill, Dayal Ch; Das, Anu Kumar; Chatterjee, Saibal

doi:10.1109/catcon.2017.8280246

Cited by 7 publications

(2 citation statements)

References 5 publications

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“…An improvement in breakdown strength was noted for both AC voltages and lightning impulse voltages. Other researchers [83] investigated nanofluids based on transformer oil and on synthetic ester oil with SiO 2 nanoparticles. The increased lightning impulse breakdown voltage -with volume concentrations from 0.1% up to 1%they found was attributed to the hydrophilic nature of the SiO 2 nanoparticles and their altered degree of polarization.…”

Section: Wwwetasrcom Danikas: Breakdown In Nanofluids: a Short Review On Experimental Results And Related Mechanismsmentioning

confidence: 99%

Breakdown in Nanofluids: A Short Review on Experimental Results and Related Mechanisms

Danikas

2018

Eng. Technol. Appl. Sci. Res.

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Nanofluids seem to gradualy become an alternative to traditional insulating liquids, such as transformer oil. In this paper, a short review of experimental results as well as of possible breakdown mechanisms and of some of the factors affecting the breakdown strength of the said fluids is conducted. Most of the reports suggest that the addition of nanoparticles in insulating liquids improves the breakdown strength. However, some reports that contradict the above are also to be found. In view of this, an outline of future research is discussed. This review does not encompass all possible effects, parameters and factors affecting nanofluids but it is solely concerned with breakdown strength.

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Section: Wwwetasrcom Danikas: Breakdown In Nanofluids: a Short Review On Experimental Results And Related Mechanismsmentioning

confidence: 99%

Breakdown in Nanofluids: A Short Review on Experimental Results and Related Mechanisms

Danikas

2018

Eng. Technol. Appl. Sci. Res.

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“…The reduction of breakdown performance is mainly attributed to the agglomeration that exists in nanofluids at higher volume concentrations. However, Taro et al found that SiO 2 nanofluids with a diameter of 30 nm with concentrations ranging from 0.1 to 1% volume fraction were successfully stable where no agglomeration and sedimentation issues were noticed [33]. It can be computed that a certain value of concentrations is impactful for the optimization of high lever power transformers and contributes to the mechanism that could improve electrical and insulation performance.…”

Section: Effects Of Concentrationsmentioning

confidence: 99%

A Review on Oil-Based Nanofluid as Next-Generation Insulation for Transformer Application

Suhaimi

Rahman

Din

et al. 2020

Journal of Nanomaterials

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Due to the increasing demand on developing good insulation, several researchers have performed experimental studies to prove the effectiveness and capabilities of transformer oil. This is done by suspending nanosized solid particles in the oil (nanofluid) for transformer applications. In brief, this paper presents a compilation of research studies which is divided into three parts. Part I discuss the preparation of the nanofluid which involves different types of nanomaterials, the optimal amount of concentrations, and applicable synthesisation methods for producing stably suspended nanofluids. In Part II, the nanofluid’s performances including the electrical breakdown voltages, impulse tests, and thermal and dielectric behaviour are reviewed in depth and compared. Part III emphasizes the limitation of nanofluids. Most researchers have agreed that appropriate concentrations of nanomaterials and the preparation method for nanofluids mainly affect the performance of nanofluids especially in terms of electrical properties. Meanwhile, types of nanomaterials and base oil also play a vital role in producing nanofluids as a better alternative transformer oil. However, among a few researchers, there are concerns regarding the issue of agglomeration and inconsistencies of findings that need to be resolved. Therefore, a few aspects must be taken into consideration to produce the next generation of high heat dissipation insulation.

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Experimental investigation on thermal conductivity and viscosity of purified aged transformer oil based SiO2, Al2O3 and TiO2 nanofluid for Electric Multiple Unit Train

Deenesh¹,

Mahmood²,

Kadir³

et al. 2021

J. Phys.: Conf. Ser.

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High voltage traction transformer of electric train demands reliable transformer oil with good heat transfer properties. Anyhow thermal stress due to high temperature initiates premature thermal ageing that deteriorates the properties of transformer oil even after multiple purification process. Influence of silicon dioxide (SiO 2), aluminium oxide (Al 2O 3) and titanium oxide (TiO 2) nanoparticles on treating purified aged transformer oil (PATO) has been addressed in this study. Oil samples were collected after validation process using colour condition standards. Each nanoparticle was suspended in the aged oil using magnetic stirrer and ultrasonic bath at 0.1% volume concentration. Stability analysis was conducted using photo capturing and zeta potential analyser method. Thermal conductivity and viscosity were investigated from temperature range of 30°C to 70°C. Based on the experimental results, PATO-based SiO 2 nanofluid was chosen as no sedimentation detected even after 144 hours with zeta potential value of 71.83mV. Thermal conductivity of PATO was enhanced up to 20.83%. Besides that, the suggested nanofluid obeys Newtonian fluid law with the viscosity enhancement up to 6.7%. On the other hand, it was found that the properties of PATO were improved with the suspension of SiO 2 nanoparticles, thus helps railway industry to optimize the life span of transformer oil.

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Experimental investigation of transformer oil based nanofluids for applications in distribution transformers

Cited by 7 publications

References 5 publications

Breakdown in Nanofluids: A Short Review on Experimental Results and Related Mechanisms

Breakdown in Nanofluids: A Short Review on Experimental Results and Related Mechanisms

A Review on Oil-Based Nanofluid as Next-Generation Insulation for Transformer Application

Experimental investigation on thermal conductivity and viscosity of purified aged transformer oil based SiO2, Al2O3 and TiO2 nanofluid for Electric Multiple Unit Train

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