Comparative study on the accelerated thermal aging behavior between palm and rapeseed natural ester oils
N. L. M. Ridzuan, N. A. Bakar, S. A. Ghani, I. S. Chairul, N. H. A. Aziz
Abstract
The suitability of natural ester oils as an insulating medium in power transformers is discussed in this paper. Owing to environmental concerns, natural ester oils have great potential as mineral oil substitutes in power transformers. In this paper, the aging behaviors of palm and rapeseed natural ester oils were compared with that for mineral oil. The performance of these natural ester oils was assessed based on their properties (moisture content, acidity, and relative content of dissolved decay products) after accelerated thermal aging. The results showed that the palm oil has better performance compared to the rapeseed oil after accelerated thermal aging for 1500 h because of its lower acidity. This was further supported by the presence of sludge in the rapeseed oil after 1500 h of aging.
Keywords
Acidity; Insulating liquid; Moisture content; Power transformer; Ultraviolet-visible spectroscopy
DOI:
https://doi.org/10.11591/eei.v8i3.1590
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Bulletin of EEI Stats
Bulletin of Electrical Engineering and Informatics (BEEI) ISSN: 2089-3191, e-ISSN: 2302-9285 This journal is published by the Institute of Advanced Engineering and Science (IAES) in collaboration with Intelektual Pustaka Media Utama (IPMU) .