Statistical analysis of oil insulation breakdown voltage

Gupta, Himanshu; Das, Supriyo

doi:10.1109/ieem.2017.8290251

Cited by 4 publications

(6 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…quantity. Therefore, statistics are being considered to analyse the breakdown voltage (Gupta & Das, 2017). In the current study, a two-parameter Weibull distribution was used to model and analyse the distribution of the breakdown voltage of the prepared solid insulating samples.…”

Section: Sample Preparationmentioning

confidence: 99%

“…In the current study, a two-parameter Weibull distribution was used to model and analyse the distribution of the breakdown voltage of the prepared solid insulating samples. The probability density function (PDF) and the cumulative distribution functions are given by equation 1 and equation 2, respectively (Gupta & Das, 2017;Yuan et al, 2017).…”

Section: Sample Preparationmentioning

confidence: 99%

“…Skewness can be used to identify the symmetric or asymmetric nature of breakdown voltage values using equation 3 (Gupta & Das, 2017).…”

Section: Sample Preparationmentioning

confidence: 99%

“…The chemical and physical properties of dielectric insulators can affect their breakdown voltage, and breakdown voltage becomes a statistically distributed quantity. Therefore, statistics are being considered to analyse the breakdown voltage (Gupta & Das, 2017). In the current study, a two-parameter Weibull distribution was used to model and analyse the distribution of the breakdown voltage of the prepared solid insulating samples.…”

Section: Breakdown Voltage Of Solid Samplesmentioning

confidence: 99%

See 3 more Smart Citations

Fractal characteristics of creeping discharges propagating on nano-epoxy composite insulators immersed in coconut oil

Ediriweera

Jayarathna

Samarasinghe

et al. 2022

J. Natn. Sci. Foundation Sri Lanka

View full text Add to dashboard Cite

A solid/liquid dielectric interface is considered to be one of the weakest points in a composite insulation system, as it facilitates creeping discharges on the interface when the electric field strength exceeds a threshold value. This paper presents a study on the use of nano epoxy composite to minimize the effect of damage which occurs due to creeping discharge activity, when it was immersed in coconut oil. A point-plane electrode arrangement-based test apparatus, energized by a high voltage supply, was used for analysing the propagation of creeping discharges over solid/liquid interfaces using visual observation. An algorithm was used to determine the fractal dimension of creeping discharges propagating over various solid/liquid insulating interfaces. In particular, it focused on the variation in creeping discharge patterns with the use of pure epoxy and nano-composite epoxy samples. The results showed that the use of nanofillers can increase the dielectric breakdown strength of epoxy by 7%. The results also showed nanofillers of 20 nm with 1% concentration do not affect the tortuosity of the creeping discharge pattern on the solid material immersed in coconut oil. However, it can increase the possibility of flashover due to creeping discharge propagation over epoxy insulating material immersed in coconut oil by around 12%.

show abstract

Section: Sample Preparationmentioning

confidence: 99%

Section: Sample Preparationmentioning

confidence: 99%

“…Skewness can be used to identify the symmetric or asymmetric nature of breakdown voltage values using equation 3 (Gupta & Das, 2017).…”

Section: Sample Preparationmentioning

confidence: 99%

Section: Breakdown Voltage Of Solid Samplesmentioning

confidence: 99%

See 2 more Smart Citations

Fractal characteristics of creeping discharges propagating on nano-epoxy composite insulators immersed in coconut oil

Ediriweera

Jayarathna

Samarasinghe

et al. 2022

J. Natn. Sci. Foundation Sri Lanka

View full text Add to dashboard Cite

show abstract

“…Gupta and Das [26], Gaussian's probability statistics method with normal and Weibull distribution is applied to study the breakdown voltage of the dielectrics. It shows that silicon as a synthetic ester has the lowest BDV followed by mineral oil then natural ester oil get the highest BDV.…”

Section: Mixing Ratios Of Dielectricsmentioning

confidence: 99%

Alternative liquid dielectrics in power transformer insulation: a review

Tlhabologo

Samikannu

Mosalaosi

2021

IJEECS

View full text Add to dashboard Cite

Transformer liquid dielectrics evolved where mineral oil has been the dominant choice until emergence of synthetic esters and natural esters. Natural ester-based oils have been under extensive investigations to enhance their properties for replacing petroleum-based mineral oil, which is non-biodegradable and has poor dielectric properties. This paper focuses on exposition of natural ester oil application in mixed transformer liquid dielectrics. Physical, chemical, electrical, and ageing characteristics of these dielectrics and the dissolved gas analysis (DGA) were reviewed. Physical properties include viscosity, pour point, flash and fire point which are vital indicators of heat insulation and fire risk. Chemical properties considered are water content, acid number, DGA, corrosive sulphur, and sludge content to limit and detect degradation and corrosion due to oil ageing. Electrical properties including breakdown voltage were considered for consistent insulation during overload and fault conditions. These properties of evolving alternative dielectrics were reviewed based on ASTM International standards and International Electro technical Commission standards for acceptable transformer liquid dielectrics. This review paper was compiled to avail modern methodologies for both the industry and scholars, also providing the significance of using mixed dielectrics for power transformers as they are concluded to show superiority over non-mixed dielectrics.

show abstract

Estimation of Support Vector Machine Parameters Based on Breakdown Voltage Characteristics

Iqbal

Das

2018

2018 2nd International Conference on Power, Energy and Environment: Towards Smart Technology (ICEPE)

View full text Add to dashboard Cite

Statistical analysis of oil insulation breakdown voltage

Cited by 4 publications

References 10 publications

Fractal characteristics of creeping discharges propagating on nano-epoxy composite insulators immersed in coconut oil

Fractal characteristics of creeping discharges propagating on nano-epoxy composite insulators immersed in coconut oil

Alternative liquid dielectrics in power transformer insulation: a review

Estimation of Support Vector Machine Parameters Based on Breakdown Voltage Characteristics

Contact Info

Product

Resources

About