Mathematische Modellierung und Analyse eines DRT-VLF-Hochspannungsprüfgenerators

Mathematical modeling and analysis of a DRT-VLF high voltage test generator. Due to the forced construction of regenerative decentralized power generation systems, high and ultra high voltage cables are frequently used, such that the demand on an efficient possibility for the on-site testing of the quality of the cables has increased in recent years. Therefore, test generators with very low frequencies (VLF) are frequently used. This paper deals with the mathematical modeling and the analysis of the dynamical system behavior of a novel VLF test generator. Based on a reference model, an envelope model is derived which is well suited for the analysis of the dynamical system behavior. Both models are validated by means of measurement results. The last part of this paper is concerned with the analysis of the important dynamical features of the test generator. Ein solcher Test ist jedoch bei den heutzutage meist verwendeten Kabeln mit Kunststoffisolation wie z. B. XLPE (cross-linked polyethy-len), PE (polyethylen) oder EPR (ethylen propylen rubber) aus folgen-den Gr€ unden nicht sinnvoll: (i) Ein Test dieser Kabel mit Gleichspannung f€ uhrt zur Akkumulation von Raum-und Restladun