Journal
IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION
Volume 27, Issue 5, Pages 1611-1618Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TDEI.2020.008992
Keywords
transformers; insulation; carbon quantum dots; nanotechnology; natural esters; lightning impulse; breakdown voltage; partial discharges
Funding
- Department of Science and Technology (DST), Govt. of India, New Delhi under Nano Mission Scheme
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This paper focuses on characterization of a natural ester oil, based on corn, which has been nanostructured by carbon quantum dots (CQD) decorated nano fillers. Partial discharge (PD), lightning impulse (LI) and AC power frequency breakdown strength of corn oil, pure and nanostructured by CQD-treated SiO2 and TiO2 nanoparticles, are measured for different concentration of nanofillers with mass fractions of 0.01, 0.05 and 0.1. It is shown that the addition of CQD-treated SiO2 nanofillers improve considerably oil insulation performance already at very low nanoparticle concentration, which indicates promising potentiality for transformer insulation applications, from compact design to long-term performance.
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