In-Service Transformer Oil Regeneration Based on Laboratory-Scale Process

Authors

  • Imran Sutan Chairul High Voltage Engineering Research Laboratory, Centre for Robotics and Industrial Automation, Faculty of Electrical Engineering, Universiti Teknikal Malaysia Melaka, Malaysia
  • Sharin Ab Ghani High Voltage Engineering Research Laboratory, Centre for Robotics and Industrial Automation, Faculty of Electrical Engineering, Universiti Teknikal Malaysia Melaka, Malaysia
  • Norazhar Abu Bakar High Voltage Engineering Research Laboratory, Centre for Robotics and Industrial Automation, Faculty of Electrical Engineering, Universiti Teknikal Malaysia Melaka, Malaysia
  • Mohd Shahril Ahmad Khiar High Voltage Engineering Research Laboratory, Centre for Robotics and Industrial Automation, Faculty of Electrical Engineering, Universiti Teknikal Malaysia Melaka, Malaysia
  • Aminur Hazieq Zulkefli High Voltage Engineering Research Laboratory, Centre for Robotics and Industrial Automation, Faculty of Electrical Engineering, Universiti Teknikal Malaysia Melaka, Malaysia
  • Asimi Ana Ahmad Chemical Engineering Technology, Universiti Kuala Lumpur - Malaysian Institute of Chemical and Bioengineering Technology, Melaka, Malaysia

DOI:

https://doi.org/10.37934/arfmts.79.1.2735

Keywords:

Aged mineral oil, regeneration, UV-visible spectrophotometer (UV-Vis), total acid number (TAN), breakdown voltage (BdV)

Abstract

This paper described in-laboratory oil regeneration process of aged transformer oil using adsorbent; Fuller’s earth. The niche of this paper is the usage of real aged transformer oil taken from an 11kV/433V in-service power transformer made by ACEC Transformer in 1986. The regeneration process is achieved by forcing a mixture of aged transformer oil and Fuller’s earth through a filter paper with the aid of a vacuum pump, hence producing reclaimed transformer oil. This oil was then inserted in an amber glass bottle, blanketed with nitrogen, tightly sealed, and labelled. To test the effectiveness of Fuller’s earth as adsorbent, parameters of Dissolved Decay Product (DDP) were measured using UV-Visible Spectrophotometer (UV-Vis) by referring to ASTM D6802. In addition, Total Acid Number (TAN) and Breakdown Voltage (BdV) measurement were carried out complying the ASTM D974 and ASTM D1816 respectively. Results of UV-Vis indicated that Fuller’s earth can adsorbed 25.24% of DDP in aged transformer oil. As the DDP decreased, TAN is 84.62% reduced while BdV increased 50%. These findings are parallel with the breakdown voltage mechanism due to acidity emergence. It is proved that Fuller’s earth is effective adsorbent for oil regeneration process.

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Published

2020-12-29

How to Cite

Imran Sutan Chairul, Ab Ghani, S., Abu Bakar, N., Ahmad Khiar, M. S., Zulkefli, A. H., & Ahmad, A. A. (2020). In-Service Transformer Oil Regeneration Based on Laboratory-Scale Process. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 79(1), 27–35. https://doi.org/10.37934/arfmts.79.1.2735

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