Modeling and Simulation of the Influence of Dielectric Cavity on the HVDC Transmission Cable

F. Hassainea, H. Nouria, H. Ait Saidb, K. Mezianec, M. Aissoud aDepartment of Electrical Engineering, Ferhat Abbas University, Setif 19000, Algeria bElectrical Engineering and Automatic Department, University of Relizane, Relizane 48000, Algeria cElectrical Engineering Department, University of Khemis Miliana, Khemis Miliana 44000, Algeria dElectrical Engineering Department, University of Ain Temouchent, Ain Temouchen 46000, Algeria

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Partial discharge is one such phenomenon that can be monitored to assess the quality of insulation. However, this phenomenon is quite intricate and requires an understanding of various concurrent processes. This paper aims to analyze the behavior of the cable for the transport of direct current at high voltage. At the fundamental level, partial discharge is a localized breakdown that occurs without complete bridging of the insulation. The essential electrical properties that influence the optimal operation of high-voltage direct current cables are studied and analyzed numerically. The distribution of potential and electric field are determined by solving the Poisson equation using the finite difference method. The results of the numerical simulation for the different parts of the cable in the presence of partial discharges are presented and interpreted. Some aspects of this effect require further investigations in order to validate a realistic mathematical model of the physical phenomena as an essential step towards the accurate numerical simulation of the cable life approximation process.

DOI:10.12693/APhysPolA.147.116 topics: power transmission cable, high-voltage direct current (HVDC), partial discharge, Maxwell's equations