Suitability of natural vegetable seed oil as liquid dielectric coolant in an insulation system

Nagashree, A.N.; Champa, V.; Sumangala, B. V.; Nagabhushana, G.R.

doi:10.1109/erect.2015.7499054

Cited by 10 publications

(4 citation statements)

References 6 publications

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“…Vegetable oils, which are natural esters, are considered to be promising candidates for insulating oils owing to their high biodegradability, good thermal properties, and wide availability [5,6]. The use of vegetable oil-based insulating oil could resolve environmental problems thanks to their high biodegradability and lack of toxicity in nature.…”

Section: Importance Of Biologically Sourced Insulating Oilmentioning

confidence: 99%

Catalytic Hydroisomerization Upgrading of Vegetable Oil-Based Insulating Oil

Phan

Lee

2018

Catalysts

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Due to its high biodegradability, high dielectric strength, and good thermal stability, vegetable oil is under consideration as an alternative transformer fluid for power system equipment, replacing traditional petroleum-based insulating oils. Its main drawbacks are its poor low-temperature properties arising from the crystallization of its long-chain normal paraffins, and its lower oxidative stability arising from its higher concentration of unsaturated fatty acids. Hydroisomerization/isomerization over bifunctional catalysts is considered to be an efficient pathway to upgrade vegetable oil-based insulating oil; this converts saturated/unsaturated long-chain fatty acids to branched isomers. The efficiency of this process depends crucially on the behavior of the catalyst system. This paper extensively reviews recent results on the influence that the metal phase and acidity, the effects of pore channels, and the balance between metal and acid sites have upon the activity and selectivity of catalytic hydroisomerization.

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Section: Importance Of Biologically Sourced Insulating Oilmentioning

confidence: 99%

Catalytic Hydroisomerization Upgrading of Vegetable Oil-Based Insulating Oil

Phan

Lee

2018

Catalysts

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“…Accordingly, reforming processes are surely a new way for the production of H 2 and liquid hydrocarbons from lignocellulosic biomasses or their derived molecules [17][18][19][20]. At the same time, biomasses can be directly converted into liquid fuels and bio-oils via pyrolysis (thermal degradation process in absence of added oxygen) [21] or used as starting materials for the production of vegetable oils that are efficiently used in several energetic application [22,23]. Finally, a recent trend is surely the production of aromatics, including BTX compounds (benzene-toluene-xylene), starting from lignin, sugars and aromatic ethers, and esters in the framework of the so-called "lignin-first biorefinery" [24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Catalytic Processes for The Valorization of Biomass Derived Molecules

Espro

Mauriello

2019

Catalysts

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“…Vegetable insulating oil has been used successfully in distribution transformers in certain countries and regions, and they are under research and development for application in large power transformers [2][3][4]. As a new and environment-friendly substitute of mineral insulating oil, it has good dielectric properties.…”

Section: Introductionmentioning

confidence: 99%

Influence of Copper Particles on Breakdown Voltage and Frequency-Dependent Dielectric Property of Vegetable Insulating Oil

Wang

Ran

et al. 2017

Energies

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Abstract:The insulating performance of oil is vulnerable to particles especially the conductive particles. This paper investigated the influence of copper particles of micrometer size on the breakdown strength and frequency-dependent properties of vegetable oil. The AC breakdown voltage of contaminated vegetable oil with copper particles of different numbers (ranging from 10 3 to 10 6 ) was measured. The frequency-dependent dielectric properties including volume resistivity, relative permittivity and dissipation factor of the contaminated vegetable oil with copper particles of various volumetric concentrations (0.011%, 0.056% and 0.112%) were measured. Identical experiments were conducted with mineral oil for comparison. Results show that the AC breakdown voltage of vegetable oil decreases with the increase of copper particle concentration. The mineral oil exhibits a similar trend, but the influence of copper particles on the AC breakdown voltage of vegetable oil is less significant than that on mineral oil because of its greater viscosity. The relative permittivity and dissipation factor increase with increasing copper volumetric concentration while the volume resistivity decreases. The influence of copper particles on them is significant at low frequencies and this influence becomes inconspicuous as the frequency increases. Similar results were observed for mineral oil.

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Suitability of natural vegetable seed oil as liquid dielectric coolant in an insulation system

Cited by 10 publications

References 6 publications

Catalytic Hydroisomerization Upgrading of Vegetable Oil-Based Insulating Oil

Catalytic Hydroisomerization Upgrading of Vegetable Oil-Based Insulating Oil

Catalytic Processes for The Valorization of Biomass Derived Molecules

Influence of Copper Particles on Breakdown Voltage and Frequency-Dependent Dielectric Property of Vegetable Insulating Oil

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