Gas Production by Monoester of Saturated Fatty Acids under Electrical Fault
Open Access
- 31 July 2022
- journal article
- Published by Universitas Andalas in JURNAL NASIONAL TEKNIK ELEKTRO
Abstract
This paper deals with the gas production by monoester oil intended to be used as insulating oil under an electrical discharge of low energy. The monoester contains only saturated fatty acids in its hydrocarbon chain. The electrical fault was realized by implementing an AC high voltage to hemispherical shaped electrode pairs with the gap of 2.5 mm immersed in the oil sample. The voltage application was paused when the breakdown occurred in oil and re-applied repeatedly up to 50 and 75 times to allow a high concentration of gasses produced by the oil sample. The resulting gasses were extracted from the oil sample using the headspace method and then analyzed using gas chromatography (GC). Fault identification methods, like DGA status, Key Gas, Duval Triangle, and IEC Ratio, were performed to predict the fault causing the production of such gasses. The results are compared with those of the monoester of unsaturated type. It is found that the Key Gas method is applicable for both oils under electrical discharge. The Duval Triangle and the IEC Ratio methods diagnose the electrical discharge in both monoesters but overestimate them as high energy discharge.Keywords
This publication has 15 references indexed in Scilit:
- Low thermal fault gases of various natural monoesters and comparison with mineral oilIEEE Transactions on Dielectrics and Electrical Insulation, 2016
- Efficiency of ageing markers for different transformer insulation systemsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2016
- Comparison of Dissolved Gases in Mineral and Vegetable Insulating Oils under Typical Electrical and Thermal FaultsEnergies, 2016
- Comparison of low thermal fault gases of various fatty acid mono estersPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2015
- Dissolved gas analysis (DGA) of natural ester insulating fluids with different chemical compositionsIEEE Transactions on Dielectrics and Electrical Insulation, 2014
- A review of dissolved gas analysis measurement and interpretation techniquesIEEE Electrical Insulation Magazine, 2014
- Gas generation in natural ester and mineral oil under partial discharge and sparking faultsIEEE Electrical Insulation Magazine, 2013
- Dissolved gas analysis of alternative fluids for power transformersIEEE Electrical Insulation Magazine, 2007
- Vegetable-oil-based dielectric coolantsIEEE Industry Applications Magazine, 2002
- A review of faults detectable by gas-in-oil analysis in transformersIEEE Electrical Insulation Magazine, 2002