Taleb Bahmed Amar2026-06-072025https://dspace.univ-ghardaia.edu.dz/handle/123456789/10448Specialty: Industrial Maintenance Hemza MEDOUKALI/Supervisorartial discharge (PD) is a critical phenomenon that can significantly compromise the reliability and lifespan of high-voltage insulation systems, particularly in cross-linked polyethylene (XLPE) cables. This thesis presents a detailed investigation into PD behavior within insulation voids, with a focus on how void location and size affect discharge activity. A reliable equivalent circuit model was developed to simulate PD under various conditions, with electrical parameters derived from the geometric properties of the voidsenPartial DischargeXLPE CableInsulatorsHigh VoltageThesis