Abstract:
The aging problem of vegetable oil has severely restricted the popularization and application of vegetable oil transformers. Adding antioxidants is the most recommended s...Show MoreMetadata
Abstract:
The aging problem of vegetable oil has severely restricted the popularization and application of vegetable oil transformers. Adding antioxidants is the most recommended solution. At present, there is insufficient research on the micro-mechanism application of the protective effect of antioxidants on vegetable oil. In this paper, multiple vegetable oil models with different types and concentrations of antioxidants are established. Then the molecular dynamics simulation based on ReaxFF is carried out at different temperatures and oxygen content. Results show that the protective mechanism of antioxidants is to release H and combine this with free radicals generated by the decomposition of unsaturated fatty acids (UFA) in the oil. In addition, the protective effects of four antioxidants show different results. The stronger ones are tert-butyl hydroquinone (TBHQ) and butylated hydroxytoluene (BHT), while the weaker ones are butylated hydroxyanisole (BHA) and propyl gallate (PG). TBHQ has a better protective effect at lower concentrations, but the decomposition of UFA is promoted at higher concentrations. When the temperature rises, the decomposition of UFA is promoted. With the addition of oxygen, smaller molecular compounds are easily oxidized, and the decomposition of UFA is accelerated. The above research could reveal the microscopic mechanism of antioxidant protection on vegetable oil, providing theoretical references for further exploration of effective vegetable oil aging protection technology.
Published in: CSEE Journal of Power and Energy Systems ( Volume: 10, Issue: 3, May 2024)
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- IEEE Keywords
- Index Terms
- Protective Effect ,
- Molecular Dynamics ,
- Vegetable Oils ,
- ReaxFF Molecular Dynamics ,
- Free Radicals ,
- Transformer ,
- Molecular Dynamics Simulations ,
- Antioxidant Effects ,
- Unsaturated Fatty Acids ,
- Antioxidant Mechanisms ,
- Antioxidant Content ,
- Butylated Hydroxytoluene ,
- Butylated Hydroxyanisole ,
- Antioxidant Protective Effects ,
- Tert-butylhydroquinone ,
- Propyl Gallate ,
- Single-molecule ,
- Double Bond ,
- Number Of Molecules ,
- Main Product ,
- C-C Bond ,
- Molecules In The System ,
- Decomposition Process ,
- C Atoms ,
- Single Bond ,
- Flash Point ,
- Ignition Point ,
- High Content Of Antioxidants ,
- Small Number Of Molecules ,
- Bond Breaking
- Author Keywords
Keywords assist with retrieval of results and provide a means to discovering other relevant content. Learn more.
- IEEE Keywords
- Index Terms
- Protective Effect ,
- Molecular Dynamics ,
- Vegetable Oils ,
- ReaxFF Molecular Dynamics ,
- Free Radicals ,
- Transformer ,
- Molecular Dynamics Simulations ,
- Antioxidant Effects ,
- Unsaturated Fatty Acids ,
- Antioxidant Mechanisms ,
- Antioxidant Content ,
- Butylated Hydroxytoluene ,
- Butylated Hydroxyanisole ,
- Antioxidant Protective Effects ,
- Tert-butylhydroquinone ,
- Propyl Gallate ,
- Single-molecule ,
- Double Bond ,
- Number Of Molecules ,
- Main Product ,
- C-C Bond ,
- Molecules In The System ,
- Decomposition Process ,
- C Atoms ,
- Single Bond ,
- Flash Point ,
- Ignition Point ,
- High Content Of Antioxidants ,
- Small Number Of Molecules ,
- Bond Breaking
- Author Keywords