The influence of service aging on transformer insulating oil parameters

Singh, Jashandeep; Sood, Yog Raj; Verma, Pradeep

doi:10.1109/tdei.2012.6180234

Cited by 65 publications

(36 citation statements)

References 10 publications

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“…moisture interactivity with environment due to leakage, additional moisture generation due to chemical reactions [3], transformer breathing, decomposing the cellulosic materials under stresses, aging phenomena, exposure to atmospheric moisture during maintenance, failure to dry out the insulation during manufacturing [4]. The moisture content is a life-shortening parameter.…”

Section: Moisture Contentmentioning

confidence: 99%

Impact of Accelerated Stresses on Power Transformer Insulation

Singh¹,

Sood²,

Verma³

2017

EPE

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The paper is based on the experimental investigation of accelerated stresses on insulation of power transformer. The effects of individual thermal and electrical stresses have been graphically presented. The factors accelerated thermal aging factor (ATAF) and accelerated electrical aging factor (AEAF) have been introduced, it helps to understand the contribution of thermal and electrical stresses and degradation trends of insulating properties. The accelerated aging factors have been mathematically correlated with different properties of insulation such as moisture, breakdown voltage (BDV), tan delta and resistivity. These parameters were determined experimentally for fresh oil samples and for samples subjected to accelerated aging.

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Section: Moisture Contentmentioning

confidence: 99%

Impact of Accelerated Stresses on Power Transformer Insulation

Singh¹,

Sood²,

Verma³

2017

EPE

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“…The increase in oxidation contaminants causes more reduction in interfacial tension. This may be due to high affinity towards water and oil molecules [21]. Table 5 exhibits the variation of interfacial tension with time in accelerated degradation test.…”

Section: Interfacial Tension With Timementioning

confidence: 99%

Study on Aging Characteristics and Chemical Composition of Hydrogenated Transformer Oil

Qian¹,

Huang²,

Fu³

et al. 2013

Journal of Electrical Engineering and Technology

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-Under the condition of Baader aging, the chemical composition variation and the influence of transformer oil aging on electrical properties such as dielectric loss factor and physicchemical properties such as interfacial tension were studied in the aging precess. Moreover, the correlation between hydrogenated transformer oil electrical and physic-chemical properties and its chemical composition variation were also investigated. The results show that these parameters of physic-chemical and electrical properties of hydrogenated transformer oil relate to each other and have closed correlation with chemical composition.

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“…Finally, oil tests reveal information about several aspects of the electrical, physical and chemical condition of the transformer oil. For example, oil tests include water content, breakdown voltage (BDV), interfacial tension (IFT), dissipation factor (DF), color and acidity [3]. Conducting such tests routinely adds to the overall maintenance cost of the transformer.…”

Section: Introductionmentioning

confidence: 99%

Two-Layer Ensemble-Based Soft Voting Classifier for Transformer Oil Interfacial Tension Prediction

Hassan

El-Hag

2020

Energies

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This paper uses a two-layered soft voting-based ensemble model to predict the interfacial tension (IFT), as one of the transformer oil test parameters. The input feature vector is composed of acidity, water content, dissipation factor, color and breakdown voltage. To test the generalization of the model, the training data was obtained from one utility company and the testing data was obtained from another utility. The model results in an optimal accuracy of 0.87 and a F1-score of 0.89. Detailed studies were also carried out to find the conditions under which the model renders optimal results.

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The influence of service aging on transformer insulating oil parameters

Cited by 65 publications

References 10 publications

Impact of Accelerated Stresses on Power Transformer Insulation

Impact of Accelerated Stresses on Power Transformer Insulation

Study on Aging Characteristics and Chemical Composition of Hydrogenated Transformer Oil

Two-Layer Ensemble-Based Soft Voting Classifier for Transformer Oil Interfacial Tension Prediction

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