Degradation of Surrounding Dielectrics of a Micro-Channel Due to Partial Discharges, Part 2: Parametric Study
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The two dimensional Particle in Cell - Monte Carlo Collision (PIC-MCC) model for simulation of partial discharges inside a narrow micro-channel presented in part 1 is used in this second part to study the effect of various parameters. The parameters studied are applied electric field, channel dimensions and gas pressure. The effect of the number of initial electrons assumed at the onset of simulation is further studied in order to validate the results. It is observed that the extent of damage caused by a PD is primarily determined by the total number of impacting electrons capable of producing bond-scission at the dielectric. Parameters that effectively cause an increase in the number of energetic electrons increases effective damage as well as surface conductivity of surrounding dielectrics.
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