Surge Current Withstand Capability of Natural Ester Oil: A Comparison to Gas-to-Liquid Transformer Oil
The basic electrical characteristics of a natural ester oil are experimentally investigated and compared to gas-to-liquid transformer oil with emphasis given to the endurance against surge events. An accelerated degradation test is conducted using a sequence of current impulses generated through a c...
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Published in | IEEE transactions on industry applications pp. 1 - 10 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
IEEE
03.09.2024
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Subjects | |
Online Access | Get full text |
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Summary: | The basic electrical characteristics of a natural ester oil are experimentally investigated and compared to gas-to-liquid transformer oil with emphasis given to the endurance against surge events. An accelerated degradation test is conducted using a sequence of current impulses generated through a combination wave generator. This test is employed to investigate changes in the electrical conductivity of the oil, serving as a crucial performance indicator for assessing its surge current withstand capability. Experimental results on the surge degradation of the natural ester oil are compared to those of gas-to-liquid oil, which is commonly used in power transformers. A discussion is made on the possible use of natural ester oils as a liquid matrix for environmentally friendly surge-proof nanofluids to substitute transformer oils, which are commonly employed as insulating liquids and coolants in the power industry. |
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ISSN: | 0093-9994 1939-9367 |
DOI: | 10.1109/TIA.2024.3454232 |