The insulation oil for such oil-filled equipment as inverted oil-immersed current transformer

etc will occur oxidization

dissociation and carbonization in the operation due to the action of electric field and magnetic field

causing some CH bonds and CC bonds to break

and recombine to form such gases as CO

CO2 and H2 through complicated chemical reaction. In case of studying the inverted oil-immersed current transformer

the gas generated by the head due to fault can only be detected by chromatographic analysis of the oil sample taken from oil valve at bottom of the transformer. Therefore

in order to study the law of gas diffusion from generation to stable diffusion of the insulation oil

the model of 65 kV inverted oil-immersed current transformer is set up by COMSOL simulation platform

the finite element analysis method and the Multiphysics coupling analysis method so to study the diffusion and distribution law of gas and the experimental verification is performed by way of setting up physical model. The experimental and simulation results are mutually verified and the diffusion distribution law of gas in insulating oil is obtained. The calculation model of gas diffusion distribution of current transformer is set up

which provides a new idea for the maintenance of related equipment.