Preparation and breakdown strength of Fe3O4 nanofluid based on transformer oil

The dielectric properties of transformer oil effects its service life,and the safety grade of distribution network. Nanoparticles have attracted much attention in recent years, because they can enhance the dielectric properties of transformer oil, and also have a wide range of potential applications. In this paper, stable nanofluid of Fe₃O₄ nanoparticles with different concentration in the transformer oil were prepared using Hexadecyl trimethyl ammonium Bromide (CTAB) as surfactant. The effects of nanoparticles concentration and surfactant concentrations on breakdown strength under AC stresses were investigated. The observed results indicated that the addition of Fe₃O₄ nanoparticles to transformer oil can enhance its dielectric strength. The effect of surfactant concentration on the breakdown strength of transformer oil has been investigated.