Determining the inhibitor content of transformer insulating oil using UV-Vis spectroscopy

Sing, Leong Yang; Ker, Pin Jern; Jamaludin, M. Z.; Ismail, Amiruddin; Abdullah, Fairuz; Mun, Looe Hui; Saniyyat, C. Nuru; Shukri, Muhammad Safwan

doi:10.1109/iccsce.2016.7893567

Cited by 11 publications

(2 citation statements)

References 16 publications

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“…Therefore, the objective of this paper is to provide a review of recent developments in color measurement for oil products and other amber-colored liquids. For mineral oil, its quality depends on its properties, such as the viscosity [ 28 ], breakdown voltage [ 29 ], inhibitor content [ 30 ], color [ 11 , 31 ], acidity [ 17 ] and moisture content [ 23 ]. Depending on its applications, different chemical and additives are added, which results in shades of colors.…”

Section: Introductionmentioning

confidence: 99%

The Amber-Colored Liquid: A Review on the Color Standards, Methods of Detection, Issues and Recommendations

Hadi

Ker

Thiviyanathan

et al. 2021

Sensors

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For most natural or naturally-derived liquid products, their color reflects on their quality and occasionally affects customer preferences. To date, there are a few subjective and objective methods for color measurement which are currently utilized by various industries. Researchers are also improving these methods and inventing new methods, as color is proven to have the ability to provide various information on the condition and quality of the liquid. However, a review on the methods, especially for amber-colored liquid, has not been conducted yet. This paper presents a comprehensive review on the subjective and objective methods for color measurement of amber-colored liquids. The pros and cons of the measurement methods, the effects of the color on customer preferences, and the international industry standards on color measurements are reviewed and discussed. In addition, this study elaborates on the issues and challenges related to the color measurement techniques as well as recommendations for future research. This review demonstrates that the existing color measurement technique can determine the color according to the standards and color scales. However, the efforts toward minimizing the complexity of the hardware while maximizing the signal processing through advanced computation are still lacking. Therefore, through this critical review, this review can hopefully intensify the efforts toward finding an optimized method or technique for color measurement of liquids and thus expedite the development of a portable device that can measure color accurately.

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Section: Introductionmentioning

confidence: 99%

The Amber-Colored Liquid: A Review on the Color Standards, Methods of Detection, Issues and Recommendations

Hadi

Ker

Thiviyanathan

et al. 2021

Sensors

Self Cite

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“…There are several available methods for measuring the color of liquid, such as visual examinations [6], color comparator [7], visual colorimeter [8][9][10], automatic colorimeter [11,12], optical spectroscopy [13][14][15][16][17][18][19][20][21][22][23][24][25], and image analysis [26][27][28][29][30][31][32]. The conventional method of measuring the color of transformer oil is to use a color comparator, where a sample is compared with a standard colored disc.…”

Section: Introductionmentioning

confidence: 99%

Color Index of Transformer Oil: A Low-Cost Measurement Approach Using Ultraviolet-Blue Laser

Hadi

Ker

Lee

et al. 2021

Sensors

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The color of transformer oil can be one of the first indicators determining the quality of the transformer oil and the condition of the power transformer. The current method of determining the color index (CI) of transformer oil utilizes a color comparator based on the American Society for Testing and Materials (ASTM) D1500 standard, which requires a human observer, leading to human error and a limited number of samples tested per day. This paper reports on the utilization of ultra violet-blue laser at 405- and 450-nm wavelengths to measure the CI of transformer oil. In total, 20 transformer oil samples with CI ranging from 0.5 to 7.5 were measured at optical pathlengths of 10 and 1 mm. A linear regression model was developed to determine the color index of the transformer oil. The equation was validated and verified by measuring the output power of a new batch of transformer oil samples. Data obtained from the measurements were able to quantify the CI accurately with root-mean-square errors (RMSEs) of 0.2229 for 405 nm and 0.4129 for 450 nm. This approach shows the commercialization potential of a low-cost portable device that can be used on-site for the monitoring of power transformers.

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Comprehensive and statistical investigation on the impact of alumina nanoparticles and hydrocarbon solvent upon the reliability of transformer liquid insulation composed of moringa oil

Kanna¹,

Ravindran²,

Sobia³

2023

Biomass Conv. Bioref.

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Determining the inhibitor content of transformer insulating oil using UV-Vis spectroscopy

Cited by 11 publications

References 16 publications

The Amber-Colored Liquid: A Review on the Color Standards, Methods of Detection, Issues and Recommendations

The Amber-Colored Liquid: A Review on the Color Standards, Methods of Detection, Issues and Recommendations

Color Index of Transformer Oil: A Low-Cost Measurement Approach Using Ultraviolet-Blue Laser

Comprehensive and statistical investigation on the impact of alumina nanoparticles and hydrocarbon solvent upon the reliability of transformer liquid insulation composed of moringa oil

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