A stable corona discharge in a two conductors-to-plane configuration is
analysed in this paper. A linear biased probe, without end-effect, has been
adapted to a linear geometry and is used for the first time to measure the
ground-plane current density and electric field during the bipolar corona.
The values of the electric field and the current density are maximum under
the two coronating conductors and decrease when moving away from them.
Furthermore, a hybrid technique is developed to obtain a general solution of
the governing equations of the coupled space-charge and electric field
problem. The technique is to use the finite-element method (FEM) to solve
Poisson's equation, and the method of characteristic (MOC) to find the
charge density from a current-continuity relation. The model avoids
resorting to the Deutsch assumption. The computed values are in good
agreement with experimental data.