Electrical properties of vegetable oil-impregnated paper insulation

Hemmer, Michaël; Badent, R.

doi:10.1109/ceidp.2003.1254794

Cited by 22 publications

(19 citation statements)

References 2 publications

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“…The results of relative permittivity of RBDPO/RBDSO mixture were higher compared to conventional mineral oil which was only 2.0 at 90˚C. The relative permittivity of mineral oil at 90˚C reported by Suwarno et al [19] and Hemmer et al [58] also showed a close value with Caixin et al [56] which indicated that the relative permittivity of RBDPO/ RBDSO mixture of 0% to 50% were better compared to mineral oil.…”

Section: Relative Permittivity (Dielectric Constant) Characteristicssupporting

confidence: 66%

Study of Dielectric Properties of a Potential RBD Palm Oil and RBD Soybean Oil Mixture as Insulating Liquid in Transformer

Azmi¹,

Ahmad²,

Jamil³

2015

Journal of Electrical Engineering and Technology

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-This paper reported the experimental result of dielectric properties of Refined, Bleached and Deodorized Palm Oil (RBDPO) combined with 0-50% of Refined, Bleached and Deodorized Soybean Oil (RBDSO). The dielectric strength and relative permittivity of RBDPO/RBDSO was higher compared to mineral oil at all ranges of ratios and temperatures which indicated a positive sign for its possible use as insulating liquid in a transformer. All ratios of the RBDPO/RBDSO mixture also demonstrated lower dissipation factor compared to mineral oil at 40˚C, 70˚C and 90˚C. Apart from that, the kinematic viscosity for the oil mixtures shown exceeded the IEC 60296 as well as the mineral oil results. 70%RBDPO/30%RBDSO mixture ratio was chosen as the best mixing percentage after comparison was made with the mineral oil and IEC 60296 standard where the mixture accumulated the most satisfactory of dielectric properties hence making it as the potential candidate for palm and soybean-based transformer oil.

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Section: Relative Permittivity (Dielectric Constant) Characteristicssupporting

confidence: 66%

Study of Dielectric Properties of a Potential RBD Palm Oil and RBD Soybean Oil Mixture as Insulating Liquid in Transformer

Azmi¹,

Ahmad²,

Jamil³

2015

Journal of Electrical Engineering and Technology

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“…Hemmer et al [55] investigated different samples of mineral oil and rape-seed oil and showed that rape-seed oil RAPSOLT have good compatibility with ordinary transformer mineral oil. Especially the AC breakdown strength of pressboard impregnated with RAPSOLT was quite high.…”

Section: Breakdown Strengthmentioning

confidence: 98%

“…Hemmer et al [55] from Germany investigated and showed that stabilized rape-seed oil RAPSOLT have good compatibility with conventional used transformer board. AC breakdown voltage of pressboard impregnated with RAPSOLT was quite high.…”

Section: Historic Evolution Of Vegetable Oil As Transformer Oilmentioning

confidence: 98%

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Use of vegetable oils as transformer oils – a review

Rafiq

Zhou

et al. 2015

Renewable and Sustainable Energy Reviews

247

102

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“…Hemmer et al [5] investigated the electrical properties of vegetable oil impregnated pressboard insulation manufactured by Weidmann Transformer board. Specifically, the pressboard specimens were 1mm thickness TI and TIV types.…”

Section: Introductionmentioning

confidence: 99%

A Comparative Study of the Dielectric Strength of Ester Impregnated Cellulose for Use in Large Power Transformers

Martín

Wang

Dyer

et al. 2007

2007 IEEE International Conference on Solid Dielectrics

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It is essential to ensure that the dielectric strength of an oil-cellulose insulation structure is not reduced when using esters to replace mineral oil in power transformers. One advantage proposed to using esters is that their higher dielectric constants, when compared to mineral oil, provide a better match to the dielectric constant of the impregnated cellulose. This results in the electric stress being reduced in the oil and increased in the cellulose, beneficial as the oil tends to have the lower dielectric strength. This paper reports the ac and impulse dielectric strengths of ester impregnated paper and pressboard. It was found that the ac withstand voltages of cellulose impregnated with ester are at least equal, or better, than cellulose impregnated with mineral oil. The lightning impulse dielectric strengths of cellulose impregnated with ester were found to be comparable to mineral oil. An analysis is given on the breakdown process of cellulose, as cellulose can fail due to either a direct puncture or discharges created in the oil wedge.

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Electrical properties of vegetable oil-impregnated paper insulation

Cited by 22 publications

References 2 publications

Study of Dielectric Properties of a Potential RBD Palm Oil and RBD Soybean Oil Mixture as Insulating Liquid in Transformer

Study of Dielectric Properties of a Potential RBD Palm Oil and RBD Soybean Oil Mixture as Insulating Liquid in Transformer

Use of vegetable oils as transformer oils – a review

A Comparative Study of the Dielectric Strength of Ester Impregnated Cellulose for Use in Large Power Transformers

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