الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
In this thesis, the monopolar and bipolar corona equations are solved for bundle conductors by using a modified iterative method without any numerical difficulties. The method gives, for the first time, the corona current contributed by each subconductor of the bundle.
Some of the main underlying assumptions commonly used in literature are waived by using the present iterative method. The change of corona onset voltage from point to point on each subconductor as well as the variation of ion mobility with its life time are taken into account for the first time.
The calculated corona currents from each subconductor are compared for the first time with those measured experimentally for laboratory models.
A rigirous solution of the monopolar corona equation using a modified finite elements method (FEM) is attempted to calculate the corona current from HVDC transmission lines without going into any empiricism. In the FEM method, Deutsch’ assumption as it demonstrates that the space charge affects only the magnitude and not the direction of the electric field, is waived. This method entails implicitly a decrease of the surface field intensity of the coronating conductor with the applied voltage in the same manner as observed experimentally.
This represents in itself an additional improvement of the analysis of ionized-field where the approximation pertinent to the assumption of constant surface field intensity irrespective of the corona intensity is mitigated for the first time.