Abstract
Compared to a spherical metal particle motion within gas insulation, a wire-type particle could have a standing position on the ground electrode. In this work, a numerical investigation and validation from the experimental data of corona discharge from a small protrusion in air insulation within a uniform field under a dc voltage are performed. Three drift-diffusion models and Poisson equations are employed and solved using a finite element method to investigate negative corona discharge phenomena. The results show that the current characteristic with different applied voltages is within good agreement with the experimental results. A typical pulse train and the total number of charged species are also presented. Furthermore, the spatial distribution of charged species, the electric field distribution, and the ionization rate are explained. The effect of physical geometries of the particle on negative corona discharge characteristics is also investigated. It is found that the variation of the particle length, diameter, and tip radius is influencing the pulse characteristics.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
