Electrical and thermal ageing of microcomposite nano-filled epoxy: Influence on space charge accumulation

Nanotechnologies are now inevitable regardless of the scope. In electrical engineering, especially in the context of "major" power systems, insulating materials of tomorrow are in the field of nanotechnologies. These new materials are commonly called "nanodielectrics". Having conducted numerous studies on the intrinsic electrical properties of nanomaterials, we propose in this work to study the electrical and thermal ageing of nanostructured microcomposite epoxies. To do this, we used a non-destructive method of space charge measurements in solid insulating materials called the "thermal step method" to measure the evolution of charges trapped in the insulation during ageing. We will thus demonstrate the benefits or not in relation to the presence of nanoparticles in the insulating matrix.