Determining the color index of transformer insulating oil using UV-Vis spectroscopy

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

doi:10.1109/pecon.2016.7951565

Cited by 14 publications

(5 citation statements)

References 12 publications

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“…The spectral response of the insulating oil can be instantly measured with cheaper equipment, and anyone in the same field can conduct the test. Leong et al (2018) have proven the possibility of applying this technique to develop a portable device that can measure the color index of transformer insulating oil on-site in accordance with ASTM D 1500 [ 11 , 70 ]. The regression technique was used to obtain the best representation of the relationship between the absorbance, cutoff wavelength and color index.…”

Section: Methods For Color Measurementmentioning

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: Methods For Color Measurementmentioning

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

View full text Add to dashboard Cite

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“…The results are more accurate than the ASTM method, but in addition to determining the degradation -darkening of the sample, it is not possible to determine anything else. Simple spectral measurements in the visible area are most commonly used in the chemical industry and, above all, in the food industry for measuring the quality of used edible oils [1,8,9,10].…”

Section: Measurement Of Optical Parametersmentioning

confidence: 99%

Comparison of Electric and Radiometric Methods for Liquid Dielectric Diagnostic

Krbal¹

2019

ELECTROTECHNICAL REVIEW

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This paper is focused on the description and comparison the alternative photometric and radiometric methods for liquid dielectric quality diagnostic and parameters measurement, long-term practical verification and comparison of obtained data with conventional methods. The proper function and accuracy of the measured methods are verified in the Light Laboratory and in the CVVOZEPowerLab in Brno University of Technology. Streszczenie. W artykule porównanie metody fotometrycznej i radiometrycznej stosowanej do diagnostyki właściwości dielektrycznych płynów. Przedstawiono weryfikację długoterminową oraz porównanie otrzymanych danych w wynikami metody konwencjonalnej. Porównanie elektrycznej I radiometrycznej metody diagnostyki właściwości dielektrycznych płynów.

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“…Over the years, several methods have been proposed in the literature for color measurements, such as colorimeter usage [ 8 , 9 ], spectrophotometer usage [ 10 , 11 ] sensor-based methods [ 2 , 12 ], a color comparator method, and image analysis [ 5 ]. In most cases, samples need to be collected and analyzed in a laboratory before knowing the result.…”

Section: Introductionmentioning

confidence: 99%

A Neural Network-Based Model for Predicting Saybolt Color of Petroleum Products

Salehuddin

Omar

Ibrahim

et al. 2022

Sensors

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Saybolt color is a standard measurement scale used to determine the quality of petroleum products and the appropriate refinement process. However, the current color measurement methods are mostly laboratory-based, thereby consuming much time and being costly. Hence, we designed an automated model based on an artificial neural network to predict Saybolt color. The network has been built with five input variables, density, kinematic viscosity, sulfur content, cetane index, and total acid number; and one output, i.e., Saybolt color. Two backpropagation algorithms with different transfer functions and neurons number were tested. Mean absolute error (MAE), root mean square error (RMSE), and coefficient of determination (R2) were used to assess the performance of the developed model. Additionally, the results of the ANN model are compared with the multiple linear regression (MLR). The results demonstrate that the ANN with the Levenberg–Marquart algorithm, tangent sigmoid transfer function, and three neurons achieved the highest performance (R2 = 0.995, MAE = 1.000, and RMSE = 1.658) in predicting the Saybolt color. The ANN model appeared to be superior to MLR (R2 = 0.830). Hence, this shows the potential of the ANN model as an effective method with which to predict Saybolt color in real time.

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Determining the color index of transformer insulating oil using UV-Vis spectroscopy

Cited by 14 publications

References 12 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

Comparison of Electric and Radiometric Methods for Liquid Dielectric Diagnostic

A Neural Network-Based Model for Predicting Saybolt Color of Petroleum Products

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