Investigation on the Characteristics of Nano-modified Vegetable Insulating Oil

Under the premise that the global is advocating low-carbon development, vegetable insulating oil has attracted widespread attention as a green and clean material. Compared with traditional mineral insulating oil, vegetable insulating oil have the disadvantages of poor fluidity and insufficient insulating performance. Nano-doping modification is a commonly used insulating oil modification method. The vegetable insulating oil models with different doping mass fractions of nano-silicon dioxide, nano-aluminium oxide, nano-silicon dioxide modified with silane coupling agent (KH550) and nano-aluminium oxide modified with silane coupling agent (KH550) were established using Materials Studio simulation software to explore the optimal conditions for nano-modified vegetable insulating oil. By analyzing the non-bonded interaction energy between nanoparticles and vegetable insulating oil molecules, the Mean Square Displacement (MSD) and the DC breakdown voltage of the modified system, it was explored whether the modified vegetable insulating oil could stably exist and the modified conditions with the best heat dissipation and insulation characteristics. Finally, the optimal conditions for nano-doping modified vegetable insulating oil were comprehensively analyzed, including the type and doping concentration of nanoparticles.