1. Surface charge dynamics studied by the temporal evolution of the corona charging current.
- Author
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Wang, X., Kiiza, R. Clemence, Niasar, M. Ghaffarian, and Edin, H.
- Subjects
- *
SURFACE charges , *CORONA discharge , *PARTIAL discharge measurement , *STRAINS & stresses (Mechanics) , *ELECTRIC properties of materials - Abstract
The decay of surface charges deposited on the dielectric material by the partial discharge (PD) activity has a great impact on the repetition of partial discharges. In this work, the effect of dielectric placed on the surface of ground electrode in a needle-plane configuration on the discharge activity was investigated, with the application of a periodic negative step voltage. The charge decay mechanisms on a corona charged dielectric surface were investigated based on a comparison between experiments and a FEM-based numerical model. The comparison indicates that the surface charges may decay due to different mechanisms depending on the applied stress. [ABSTRACT FROM AUTHOR]
- Published
- 2015
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