The research on the law of motion of small particles in the dual-phase distribution of gas & solid under strong electric field could better explain why the contamination depositing on the surface of the insulators

the gap breakdown

the unknown flashover or some other insulation accident happened. Based on the simulation experiments

the law of motion of small particles were discussed under low velocity and the coupled fluid and electric field with the using of PIV. With comprehensive comparison of the Electric field distribution

the applied voltage

the wind velocity

the obtained results show that the effect of electric field on the fluid field under the nonuniform electric field is significantly stronger than under uniform electric field. What’s more

with the applied voltage increased

the effect increased obviously

while the wind velocity increased

the effect decreased significantly. The particles have a trend motion to the negative electrode under uniform electric field. While under nonuniform electric field

the particles have a trend motion to the positive electrode

because the effect of the cathode corona the particles are more easily to be charged.