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Color index of transformer oil: A low-cost measurement approach using ultraviolet-blue laser

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dc.citedby3
dc.contributor.authorHadi M.H.H.en_US
dc.contributor.authorKer P.J.en_US
dc.contributor.authorLee H.J.en_US
dc.contributor.authorLeong Y.S.en_US
dc.contributor.authorHannan M.A.en_US
dc.contributor.authorJamaludin M.Z.en_US
dc.contributor.authorMahdi M.A.en_US
dc.contributor.authorid57320193500en_US
dc.contributor.authorid37461740800en_US
dc.contributor.authorid57190622221en_US
dc.contributor.authorid57202929965en_US
dc.contributor.authorid7103014445en_US
dc.contributor.authorid57216839721en_US
dc.contributor.authorid7005348074en_US
dc.date.accessioned2023-05-29T09:05:34Z
dc.date.available2023-05-29T09:05:34Z
dc.date.issued2021
dc.descriptionCosts; Linear regression; Mean square error; Oil filled transformers; Power transformers; American society for testing and material d1500; American society for testing and materials; Blue lasers; Blue wavelength; Color index; Condition; Low-cost measurements; Single wavelength; Transformer oil samples; Ultraviolet-blue wavelength; Color; human; laser; power supply; Electric Power Supplies; Humans; Lasersen_US
dc.description.abstractThe 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. � 2021 by the authors. Licensee MDPI, Basel, Switzerland.en_US
dc.description.natureFinalen_US
dc.identifier.ArtNo7292
dc.identifier.doi10.3390/s21217292
dc.identifier.issue21
dc.identifier.scopus2-s2.0-85118337381
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85118337381&doi=10.3390%2fs21217292&partnerID=40&md5=caec0ecf54a0793c7d25fbc0ca3ada87
dc.identifier.urihttps://irepository.uniten.edu.my/handle/123456789/25926
dc.identifier.volume21
dc.publisherMDPIen_US
dc.relation.ispartofAll Open Access, Gold, Green
dc.sourceScopus
dc.sourcetitleSensors
dc.titleColor index of transformer oil: A low-cost measurement approach using ultraviolet-blue laseren_US
dc.typeArticleen_US
dspace.entity.typePublication
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