As a new eco-friendly liquid insulating medium

vegetable insulating oil is gradually replacing mineral insulating oil in power transformers. However

faults such as overheating and discharges still occur in vegetable insulating oil transformers. The diffusion and migration of characteristic gases generated during these processes directly affect the accuracy of dissolved gas analysis (DGA) for fault diagnosis. Focusing on novel eco-friendly camellia seed insulating oil

a hybrid unit cell model of gas-insulating oil is established using molecular simulation methods. Subsequently

molecular dynamics simulations are employed to investigate the diffusion behaviors of seven fault characteristic gases within the temperature range of 303 K to 383 K. The results show that the diffusion coefficients of all gas molecules increase with rising temperature

and the extent to which temperature enhances diffusion varies depending on the gas species. This research reveals the microscopic diffusion mechanisms of fault gases in vegetable insulating oil

which provides a theoretical basis for optimizing DGA fault diagnosis strategies in vegetable insulating oil transformers and holds significant practical importance for ensuring the safe operation of electrical equipment.