Effect of antioxidants and metal deactivator on the oxidation of transformer oil

Krishnamoorthy, P.R.; Vijayakumari, S.C.; Sankaralingam, S.

doi:10.1109/14.135598

Cited by 20 publications

(14 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Traditionally, mineral oils [1] are used as the electroinsulating fluid in the transformers, a strong biodegradable petroleum derivative [2], which, although having acceptable physical and dielectric characteristics and a relatively low cost, has a number of disadvantages such as: limited thermal stability [3][4][5][6][7][8], corrosive aggressivity due to sulfur content [8][9][10][11][12][13][14][15][16][17], reduced compatibility with the cellulose from Kraft paper -furanic products formation [18][19][20][21][22], relatively low flammability (below 150 o C) and excessive flammable gases formation [30] (high risk of explosions and devastating fires), etc. To increase thermal stability and to reduce the corrosive aggressiveness of electro-insulating oils, manufacturers often use antioxidant additives and / or corrosion inhibitors [15][16][17]31].…”

mentioning

confidence: 99%

Thermooxidative Behavior of Some Paint Materials in Natural Ester Based Electro-insulating Fluid

Lungulescu¹,

Lıngvay²,

Ungureanu³

et al. 2018

Mat.Plast.

View full text Add to dashboard Cite

ATR / FTIR and DSC techniques have been used to evaluate the thermal stability of some ageing paint materials by heat treatment while immersion in natural ester-based electro-insulating oil. Experimental determinations have highlighted the fact that the investigated paint materials (epoxy resins) have a high oxygen affinity and thus, in closed systems (such as power transformers), they oxidize before coming into contact with the transformer oil. This behavior indicates that the paint layer (suitably chosen) applied on the inside of the transformer vat functions as an antioxidant and results in increasing the thermal stability of the oil.

show abstract

mentioning

confidence: 99%

Thermooxidative Behavior of Some Paint Materials in Natural Ester Based Electro-insulating Fluid

Lungulescu¹,

Lıngvay²,

Ungureanu³

et al. 2018

Mat.Plast.

View full text Add to dashboard Cite

show abstract

“…The measurement of oil properties like Viscosity, Breakdown Voltage, Acidity, Flash and Fire point is carried out according to IEC and ASTM standards [11][12][13]. The method standard used and standard values are given in Table 1.…”

Section: A Standardsmentioning

confidence: 99%

Examining the Properties of Natural Ester Oils with Antioxidants and Nano Powders for Power Applications

Lincy,

Kumar,

Iruthayarajan

2020

IJRTE

View full text Add to dashboard Cite

In this cutting edge world, electrical vitality is the significant thing to make due on the planet. An ongoing examination has prevailed that the oil by items are accessible just for not many years. Along these lines, following barely any years substitution of mineral oil is vital because of its debasement of protection. In this paper, the oil picked is Neem oil, sunflower oil, Mahua oil and Rice grain oil is treated with antioxidants(cancer prevention agents) and nano powders. "Breakdown voltage, flash point, fire point, viscosity and acidity are estimated in consonance with principles". To diminish the oxidation security normal and manufactured antioxidants(cancer prevention agents) are liked, and Nano powders are additionally utilized for improving the properties of the oil. Engineered cell reinforcements, for example, Beta Carotene and TBHQ and selenium are favored as normal cancer prevention agents. When the expansion of cancer prevention agents and nano powders the estimations were finished. After cancer prevention agents and Nano powders are included, the property of the transformer oil is expanded. By doing this investigation, the transformer oil is utilized for reuse reason and it has a more extended lifetime.

show abstract

“…The TO, HO, NO, MO, PO and CO samples were obtained from readily available food preparation oils in the market [28][29][30]. All the oil samples were filtered independently for 3 cycles through a membrane filter with pore size of 0.4μm [31]. It was found that the oils were clean enough and oil contaminations could not be decreased further even with more filter cycles.…”

Section: A Preparation Of Oil Samplesmentioning

confidence: 99%

Optimization of Various Natural Ester Oils Impregnated Nomex Paper Performance in Power Transformer Applications under Different Ageing Conditions

Kumar*¹,

Moshi²,

Bharathi³

et al. 2019

IJRTE

View full text Add to dashboard Cite

Vegetable oils are being considered as the potential replacements to mineral oils because of their better natural execution and for their high fire point. In spite of the fact that these fluids have been utilized as a part of appropriation transformers, it is as yet a huge advance to receive vegetable oils in control transformer because of high cost and abnormal state of well being and unwavering quality required in benefit for these units. Vegetable oils such as honge oil (HO), neem oil (NO), mustard oil (MO), punna oil (PO) and castor oil (CO) offer the reasonable option for mineral oil. It is expected that the greater part of the un-matured oil could fulfil the base necessity of dielectric protection fluids in the transformer. This paper concentrated on the impact of maturing on the electrical and physicochemical properties of HO, NO, MO, PO and CO. Fixed maturing tests have been set at 90°C for 30 days, 60 days and 90 days. Prior to the maturing procedure, the examples were dried in a vacuum broiler under the pressure of 0.8kPa at 85°C for 48 hours keeping in mind the end goal to evacuate the dampness content in the oils. At that point, the oils were impregnated with the Nomex paper and keep on ageing for choosing the span time. The electrical properties (relative permittivity, dielectric misfortunes, resistivity and breakdown quality), mechanical properties (thickness and elasticity) and substance properties (dampness and corrosiveness) of the oils were estimated all through the maturing time frames. It can be reasoned that the research center quickened warm maturing test uncovers that every single vegetable oil in this examination are safe towards oxidation in light of the steady thickness and low corrosiveness estimations of vegetable oils all through the maturing term even with the nearness of oxygen. The AC breakdown voltages of vegetable oils can in any case conform to the prescribed furthest reaches of new Vegetable oil set by ASTM 6781 even after subjected to maturing. From the results, it may be concluded that the proposed vegetable oils can be used as the alternatives for mineral oil.

show abstract

Effect of antioxidants and metal deactivator on the oxidation of transformer oil

Cited by 20 publications

References 1 publication

Thermooxidative Behavior of Some Paint Materials in Natural Ester Based Electro-insulating Fluid

Thermooxidative Behavior of Some Paint Materials in Natural Ester Based Electro-insulating Fluid

Examining the Properties of Natural Ester Oils with Antioxidants and Nano Powders for Power Applications

Optimization of Various Natural Ester Oils Impregnated Nomex Paper Performance in Power Transformer Applications under Different Ageing Conditions

Contact Info

Product

Resources

About