Partial discharge-based ageing assessment of high voltage crosslinked polyethylene cable

• DOI: 10.4314/njtd.v21i4.2351
• Publication Date: 2025-02-20T13:53:17Z
• Authors: S. H. Sulaiman; A. Abdulkarim; A. S. Abubakar; G. S. Shehu; U. Musa; A. A. Mas’ud
• Keywords: High-voltage cable

High Voltage (HV) cables are important components of modern power transmission and distribution networks. However, the reliability such networks depends, to a large extent, on health condition cables. The presence voids within insulation materials which could arise from overstressing, manufacturing defects as well poor workmanship enhances electric field around defect can lead occurrence partial discharges (PDs). Furthermore, severe PD activity deteriorate cable dielectric material cause accelerated asset ageing. Also, experimental monitoring is expensive time-consuming. Hence, in this research, three-dimensional (3D) finite element model (FEM) crosslinked polyethylene (XLPE) was simulated COMSOL Multiphysics software environment analyse behaviour healthy defective under different cavity sizes applied voltages. magnitude at centre 1.0 mm air void recorded be 2.539 kV/mm, representing 24.07% increase over that corresponding cable, 2.9539 kV/mm. also studied using alongside MATLAB by adopting free parameters three ageing phases obtained experiments for 50 cycles voltage. results show repetition frequency increases ages, resulting 9.82, 15.82, 17.20 PDs per cycle stages 1, 2, 3 respectively.