Frequency-Dependent Dielectric Spectroscopy of Insulating Nanofluids Based on GTL Oil during Accelerated Thermal Aging

Improving the dielectric properties of liquid-insulating materials is a current problem in research into insulation system power transformer. Modern optimization insulating liquids involves potential use unique synthetic esters enriched with nanoparticles. This study presents results response liquefied gas-based (GTL) during accelerated thermal aging. The relaxation spectroscopy method was used frequency domain to point out losses as an imaginary part complex electric modulus. spectra express validity applying this parameter. polarization processes base oil alternately change position low-frequency band Fullerene nanofluid undergoes three phases loss changes In case magnetic nanofluid, effect double-layer disappeared after 500 h It found that gradual increase aging time, there no investigated measured spectrum. shows concentration two types nanoparticles independently causes different applied AC field GTL fluid.