Analysis on partial discharge within a void in a polymeric insulation

Zakaria, Nurul Syamimi (2021) Analysis on partial discharge within a void in a polymeric insulation. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

The localization dielectrical breakdown (DB) of a small portion of rigid or fluid electric insulation (EI) under high voltage (HV) voltage is the partial discharge (PD) in electrical engineering (which does not fully bridge the gap between the two conductors). High-voltage power cable partial discharge (PD) due to deficiency phenomenon may occur in its isolation system. The dielectric is normally the insulating product where the polymer materials are polymeric. Repeating PD process may present the deffect. The defect site may cause isolation failure because of bridges between electrode isolation. As a result, the entire cable will break down. Thus, cable insulation device PD behavior analysis has been used widely to track the state in operation of the power cables. A void cavity for cable insulation under high electrical field is one of the most common PD sources. In this paper, measurements of PD activity within the insulation layer of low-density polyethylene (LDPE), polypropylene (PP) and cross-linked polyethylene (XLPE) was performed. A comparison type of experiment within different material cable insulation was also present by comparing its parameter. The different cases of the paper was analysed in varying situations of voids and isolating. This study will compare the perception of the PD phenomena in different cable insulation.

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