Universiti Teknologi Malaysia Institutional Repository

Partial discharge characteristics in LLDPE-natural rubber blends: correlating electrical quantities with surface degradation

Aulia, Aulia and Ahmad, M. H. and Abdul-Malek, Z. and Arief, Y. Z. and Lau, K. Y. and Novizon, Novizon (2016) Partial discharge characteristics in LLDPE-natural rubber blends: correlating electrical quantities with surface degradation. Journal of Electrical Engineering and Technology, 11 (3). pp. 699-706. ISSN 1975-0102

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Abstract

Partial discharges (PD) lead to the degradation of high voltage cables and accessories. PD activities occur due to the existence of impurities, voids, contaminants, defects and protrusions during the manufacture and installation of power cables. Commonly, insulation failures occur at cable joints and terminations, caused by inhomogeneous electric field distributions. In this work, a blend of natural rubber (NR) and linear low density polyethylene (LLDPE) was investigated, and the optimal formulation of the blend that could resist PD was discussed. The experiments were conducted under a constant high voltage stress test of 6. 5 kV AC and the magnitude of partial discharge activities was recorded using the CIGRE method II. Pattern analysis of PD signals was performed along with the interpretation of morphological changes. The results showed that the addition of 10 wt% of NR and 5 wt% of Alumina Trihydrate (ATH) provided promising results in resisting PD activities. However, as the NR content increased, more micropores existed, thus resulting in increased PD activities within the samples.

Item Type:Article
Uncontrolled Keywords:Alumina, Cables, Electric fields, Electric insulation, Impurities, Linear low density polyethylenes, Polyethylenes, Rubber, Electrical quantities, High-voltage stress, Inhomogeneous electric fields, Insulation failures, Morphological changes, Partial discharge activity, Partial discharge characteristics, PD pattern, Partial discharges
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:Electrical Engineering
ID Code:72580
Deposited By: Haliza Zainal
Deposited On:27 Nov 2017 04:50
Last Modified:27 Nov 2017 04:50

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