Sacrificial copper strip sensors for sulfur corrosion detection in transformer oils

Ahmad Khiar, Mohd Shahril and Lewin, Paul L. and Brown, Richard C. D. (2019) Sacrificial copper strip sensors for sulfur corrosion detection in transformer oils. Measurement: Journal of the International Measurement Confederation, 148. pp. 1-6. ISSN 0263-2241

Text SACRIFICIAL COPPER STRIP SENSORS FOR SULFUR CORROSION DETECTION IN TRANSFORMER OILS.PDF Download (983kB)

Abstract

Existing protocols (e.g., ASTM D 1275-B standard test method) applied to detect and monitor sulfur corrosion in transformer insulating oils are imprecise as it depends on visual observation. As a solution, thin-film sacrificial copper strips are proposed as a corrosive sulfur sensor. A two-level factorial design is utilized to investigate the significant effect of area and thickness upon the sensor's transformation resistance values. Next, a regression model is developed to estimate the sensor's transformation resistance values as functions of area and thickness. The resultant outputs from the two-level factorial design revealed that area, as a variable, exhibited higher significance at 90.19%, compared to either thickness or interaction between area and thickness. The proposed regression model obtained from two-level factorial design is significant in describing the trend displayed by the sensor's transformation resistance values. Finally, this paper details the clear correlation between the sensor's transformation resistance values and elemental sulfur concentration.

Item Type:	Article
Uncontrolled Keywords:	4-Wire measurement, Corrosion sensor, Factorial design, Sulfur, Thin-film copper
Divisions:	Faculty of Electrical Engineering
Depositing User:	Sabariah Ismail
Date Deposited:	04 Aug 2020 11:57
Last Modified:	02 Aug 2023 14:56
URI:	http://eprints.utem.edu.my/id/eprint/24271
Statistic Details:	View Download Statistic

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