THE EFFECT OF THERMAL STRESS AND MATERIALS TOWARDS STRAY GASSING FORMATION IN UNINHIBITED AND INHIBITED OIL

Authors

  • Haw Jia Yong Faculty of Electrical and Electronic Engineering, Universiti Tun Hussein Onn Malaysia, Parit Raja, Malaysia https://orcid.org/0000-0003-3121-3132
  • Mohd Fairouz Mohd Yousof Faculty of Electrical and Electronic Engineering, Universiti Tun Hussein Onn Malaysia, Parit Raja, Malaysia https://orcid.org/0000-0002-1794-3406
  • Rahisham Abd Rahman Faculty of Electrical and Electronic Engineering, Universiti Tun Hussein Onn Malaysia, Parit Raja, Malaysia
  • Norhafiz Azis Department of Electrical and Electronic Engineering, Universiti Putra Malaysia, Serdang, Malaysia https://orcid.org/0000-0002-9669-569X
  • Mohd Aizam Talib TNB Labs Sdn. Bhd., Kajang, Malaysia

DOI:

https://doi.org/10.11113/jurnalteknologi.v85.18492

Keywords:

Insulation oil, dissolved gas analysis (DGA), stray gas, thermal stress, transformer materials

Abstract

Insulation oil is one of the most important components in an oil-insulated transformer. With the use of the dissolved gas analysis (DGA) tool, the condition of the transformer can be studied and predicted to prevent unwanted events from occurring. However, due to the rising of issues related to stray gassing phenomenon that causes false interpretations in the transformer condition, there is a need to find out the factors contributing to the formation of the stray gases in the transformer oil. In this research paper, thermal stress (85℃ and 120℃) on transformer oil with different transformer materials are studied to determine the effect towards the formation of stray gases in the transformer oil. The materials studied include diamond dotted paper, metal plate, coated metal plate, insulation glue and core metal. Both the uninhibited oil and inhibited oil are used for comparison. The metal plate, coated metal plate and core metal were found to be causing the generation of H2 gas at 120℃ while the cellulose ageing of insulation paper is causing the generation of CO and CO2 gases at 85℃ and above. The CH4 gas was found to be generated only at 120℃ and the insulation glue was determined to be the main cause for the C2H4 gas generation at 85℃ and above.

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Published

2022-12-02

Issue

Vol. 85 No. 1: January 2023

Section

Science and Engineering

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Copyright of articles that appear in Jurnal Teknologi belongs exclusively to Penerbit Universiti Teknologi Malaysia (Penerbit UTM Press). This copyright covers the rights to reproduce the article, including reprints, electronic reproductions, or any other reproductions of similar nature.

How to Cite

THE EFFECT OF THERMAL STRESS AND MATERIALS TOWARDS STRAY GASSING FORMATION IN UNINHIBITED AND INHIBITED OIL. (2022). Jurnal Teknologi (Sciences & Engineering), 85(1), 33-41. https://doi.org/10.11113/jurnalteknologi.v85.18492