Abstract
To explain the phenomena of partial discharges (PD) in gaseous cavities embedded in the bulk dielectric of HV equipment and their components as well as to analyze the associated PD transients, two fundamental approaches have been proposed in the past, which are commonly referred to as network-based PD model and dipole-based PD model. This paper is addressed to the first approach, while the second one will be reviewed in the Part II of this publication. Verifying the feasibility of the network-based PD model leads to results, which contradict the expectations from a physical point of view. The reason for that are simplified assumptions, which are inconsistent with the fundamentals of the gas discharge physics. Another shortcoming is the use of the classical network theory, although the field theory must be adopted to treat the PD transients. This leads to the conclusion that the traditional abc-model is only applicable to describe and explain he phenomena of cavity discharges qualitatively, but not to treat the PD transients quantitatively, as will be highlighted in more detail in this paper.
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