Alternative Fluids – with a Particular Emphasis on Vegetable Oils – as Replacements of Transformer Oil: A Concise Review

Danikas, Michael G.; Sarathi, Ramanujam

doi:10.48084/etasr.3943

Cited by 3 publications

(2 citation statements)

References 63 publications

(83 reference statements)

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“…Ravulapalli S. et al [74] reported that a higher amount of SFA imparted lower oxidative and thermal stability, which eventually leads to a faster deterioration rate. In general, PO consists of 40% of OA (mono-unsaturated fatty acid) and 45% of palmitic acid (SFA) [32]. Some studies also present experimental results of palm oil methyl ester (POME) and palm kernel oil methyl ester (PKOME), which are obtained from the transesterification process.…”

Section: ) Ac Breakdown Voltage Of Palm Oilmentioning

confidence: 99%

A Review on Palm Oil-Based Nanofluids as a Future Resource for Green Transformer Insulation System

et al. 2022

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Alternative transformer oil has been investigated universally in past years. Different types of vegetable oil have been proposed and evaluated as replacements for conventional transformer oil (mineral oil) due to increasing exploitation and depleting petroleum reserves. In response to growing concern about global environmental and sustainable issues, this article discusses the suitability of palm oil (PO) and palm oil-based nanofluids (PO-N) as alternative transformer oils. A brief discussion of environmental concerns is provided in this paper, and the detailed properties of PO are thoroughly addressed. The electrical performance (alternating current breakdown voltage and lightning impulse breakdown voltage), physical behaviour (viscosity, flash point, and fire point), tan delta, and relative permittivity of PO and PO-N are also discussed in this paper. Based on reliable data and research, it has been proven that refined, bleached, deodorised palm oil (RBDPO) has been determined to be the most promising type of PO when compared to others. Furthermore, when CuO nanoparticles are added to RBDPO with the use of CTAB surfactant, the AC breakdown voltage increases by 173.42 % compared to RBDPO without CuO. However, there is still scope for further improvement in nanofluid stability. In addition to these studies, future research should focus on other aspects such as ageing studies, partial discharge breakdown voltage, etc. PO has interesting properties that make the industry and scientific community take notice.

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Section: ) Ac Breakdown Voltage Of Palm Oilmentioning

confidence: 99%

A Review on Palm Oil-Based Nanofluids as a Future Resource for Green Transformer Insulation System

et al. 2022

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“…It is true that their use has improved the dielectric performance of power transformers, as shown by the studies conducted by Perrier et al [9]. However, they still have to meet environmental and cost-competitive requirements because they are non-biodegradable, their use is eight times more expensive than mineral oils [10,11]. In order to overcome the limitations of their uses, researchers have focused on natural esters or vegetable oils [12,13].…”

Section: Introductionmentioning

confidence: 99%

Determination at Variable Temperatures and Analysis of the Physico-Thermal Properties of Palm Kernel and Castor Oil Methyl Esters as Dielectrics for Power Transformers

Achille,

Ghislain,

Louis

et al. 2023

IJHT

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Transformers have always used mineral oil as a liquid dielectric, and scientists have noted its harmful effects on human health and the environment. For more than two years, these vegetable oils have been positioned as real substitutes for mineral oils in view of their excellent physical, chemical and thermal properties. However, being oils sometimes intended for human consumption, such as sunflower oil, corn oil, olive oil, rapeseed oil, soya oil, rice bran oil, coconut oil, palm oil and many others, it is imperative to orientate the use of these oils towards the needs of the population. It is imperative to direct their use to natural non-edible esters in order to avoid a food shortage. Work is being done in this direction, but these are not yet fully determined in terms of their physico-thermal properties as in mineral and other edible oils. This work is a contribution to the determination and analysis of the physico-thermal properties of palm kernel and castor oil methyl esters (PKOME and COME) at variable temperatures. A comparison of the behavioural results with mineral oil (MO) widely used in processors shows a similar trend. Also, the values obtained by extrapolation at room temperature are compared to the values found in the literature concerning: relative density, we have a relative error of 3.47% for PKOME, 0.10% for COME, for kinematic viscosity we have a relative error of 8% for PKOME and 1.46% for COME. The second order polynomial correlations established from the measurements have a coefficient of determination close to 1. The values obtained from these correlations are in accordance with the expectations of ASTM D 1217 for relative density, ISO 3104 for kinematic viscosity, ASTM D 7896 for thermal conductivity and the adiabatic calorimetry method for specific heat.

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Alternative Fluids – with a Particular Emphasis on Vegetable Oils – as Replacements of Transformer Oil: A Concise Review

Cited by 3 publications

References 63 publications

A Review on Palm Oil-Based Nanofluids as a Future Resource for Green Transformer Insulation System

A Review on Palm Oil-Based Nanofluids as a Future Resource for Green Transformer Insulation System

Determination at Variable Temperatures and Analysis of the Physico-Thermal Properties of Palm Kernel and Castor Oil Methyl Esters as Dielectrics for Power Transformers

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