Study on the Effects of Thermal Aging on Insulating Paper for High Voltage Transformer Composite with Natural Ester from Palm Oil Using Fourier Transform Infrared Spectroscopy (FTIR) and Energy Dispersive X-ray Spectroscopy (EDS)

Mineral oil is widely used as liquid insulation in high voltage equipment. Due to environmental considerations, recently natural esters have been considered as naturally friendly liquid insulation candidates for high voltage transformers. In this experiment, transformer insulation paper was subjecte...

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Published in:Energies (Basel) 2017-11, Vol.10 (11), p.1857
Main Authors: Munajad, Abi, Subroto, Cahyo
Format: Article
Language:English
Subjects:
Absorbance
Accelerated aging tests
Accelerated tests
Aging
Aging (natural)
Degree of polymerization
Dispersion
Electric potential
Energy
Energy dispersive X ray spectroscopy
energy dispersive X-ray spectroscopy (EDS)
Esters
Fourier transform infrared spectroscopy (FTIR)
Fourier transforms
Functional groups
High voltage
Infrared spectroscopy
Insulation
Mineral oils
natural ester
Palm oil
Polymerization
Spectroscopy
Spectrum analysis
thermal aging
transformer insulation paper
Voltage
Voltage transformers
X-ray spectroscopy
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description Mineral oil is widely used as liquid insulation in high voltage equipment. Due to environmental considerations, recently natural esters have been considered as naturally friendly liquid insulation candidates for high voltage transformers. In this experiment, transformer insulation paper was subjected to get accelerated aging test with copper strip in natural ester in a hermeneutical heat-resistant glass bottle at temperatures of 120 °C and 150 °C for 336 h, 672 h and 1008 h. The experimental results of Fourier transform infrared spectroscopy (FTIR) showed that the intensity of the absorbance peak of the O-H functional group decreased with aging, while the intensity of the C-H and C=O functional group absorbance peaks have increased with aging and the intensity of the C-O functional group absorbance peak has a tendency to increase with aging. The energy dispersive X-ray spectroscopy (EDS) experimental results showed that the weight percent of the element C increased with aging and the weight percent of the element O has decreased with aging. The experimental results show a good correlation between the degree of polymerization (DP) and the weight percent of O element. This indicates that EDS may be used as a new method for estimating the DP of transformer insulation paper.
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Due to environmental considerations, recently natural esters have been considered as naturally friendly liquid insulation candidates for high voltage transformers. In this experiment, transformer insulation paper was subjected to get accelerated aging test with copper strip in natural ester in a hermeneutical heat-resistant glass bottle at temperatures of 120 °C and 150 °C for 336 h, 672 h and 1008 h. The experimental results of Fourier transform infrared spectroscopy (FTIR) showed that the intensity of the absorbance peak of the O-H functional group decreased with aging, while the intensity of the C-H and C=O functional group absorbance peaks have increased with aging and the intensity of the C-O functional group absorbance peak has a tendency to increase with aging. The energy dispersive X-ray spectroscopy (EDS) experimental results showed that the weight percent of the element C increased with aging and the weight percent of the element O has decreased with aging. The experimental results show a good correlation between the degree of polymerization (DP) and the weight percent of O element. 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Due to environmental considerations, recently natural esters have been considered as naturally friendly liquid insulation candidates for high voltage transformers. In this experiment, transformer insulation paper was subjected to get accelerated aging test with copper strip in natural ester in a hermeneutical heat-resistant glass bottle at temperatures of 120 °C and 150 °C for 336 h, 672 h and 1008 h. The experimental results of Fourier transform infrared spectroscopy (FTIR) showed that the intensity of the absorbance peak of the O-H functional group decreased with aging, while the intensity of the C-H and C=O functional group absorbance peaks have increased with aging and the intensity of the C-O functional group absorbance peak has a tendency to increase with aging. The energy dispersive X-ray spectroscopy (EDS) experimental results showed that the weight percent of the element C increased with aging and the weight percent of the element O has decreased with aging. The experimental results show a good correlation between the degree of polymerization (DP) and the weight percent of O element. This indicates that EDS may be used as a new method for estimating the DP of transformer insulation paper.</abstract><cop>Basel</cop><pub>MDPI AG</pub><doi>10.3390/en10111857</doi><oa>free_for_read</oa></addata></record>
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1996-1073
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source Publicly Available Content Database
subjects Absorbance
Accelerated aging tests
Accelerated tests
Aging
Aging (natural)
Degree of polymerization
Dispersion
Electric potential
Energy
Energy dispersive X ray spectroscopy
energy dispersive X-ray spectroscopy (EDS)
Esters
Fourier transform infrared spectroscopy (FTIR)
Fourier transforms
Functional groups
High voltage
Infrared spectroscopy
Insulation
Mineral oils
natural ester
Palm oil
Polymerization
Spectroscopy
Spectrum analysis
thermal aging
transformer insulation paper
Voltage
Voltage transformers
X-ray spectroscopy
title Study on the Effects of Thermal Aging on Insulating Paper for High Voltage Transformer Composite with Natural Ester from Palm Oil Using Fourier Transform Infrared Spectroscopy (FTIR) and Energy Dispersive X-ray Spectroscopy (EDS)
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