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A Contribution to Environmentally-Compatible Energy Conversion: Characterization of Nano Structured Natural Ester Oil Decorated with Carbon Quantum Dots

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Abstract

Performance of natural ester oils have not been investigated deeply yet, and concerns exist about their behavior under overstresses and partial discharges. The present work investigates the suitability of novel carbon quantum dots (CQD) decorated nanostructured natural ester based corn oil for transformer insulation applications, particularly focusing on collecting database for overstressed conditions due to lightning impulse (LI) and partial discharge (PD). CQD nanofluids prepared with SiO2 and TiO2 nanofillers are tested for its insulation properties such as PD, LI and AC power frequency breakdown voltage (BDV). The tests are carried out at different concentration of nanofillers with the mass fractions of 0.01, 0.05 and 0.1. Statistical analysis of test data is performed using two parameter Weibull distribution and the results are compared with and without CQD treatment. Results are also compared with conventional mineral oil. Addition of CQD treated insulative SiO2 nanofillers show good insulation performance than semiconductive TiO2 nanofillers. The overall results clearly indicate the positive influence of CQD treatment on SiO2/TiO2 nanoparticles at lower %wt (0.01%wt) concentration of nanofillers and clearly show the suitability for MV transformer insulation applications.

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Acknowledgement

Author (S.Chandrasekar) would like to sincerely thank the Department of Science and Technology (DST), Nano Mission Scheme, New Delhi, India for providing financial support for carrying out this research work.

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Authors and Affiliations

  1. Department of Electrical Power, Nizwa College of Technology, Nizwa, Sultanate of Oman

    M. Sivakumar

  2. Department of Electrical and Electronics Engineering, SonaPERT R&D Centre, Sona College of Technology, Salem, 636005, India

    S. Chandrasekar

  3. Department of Materials Science and Engineering, Korea University, Seoul, South Korea

    P. Uthirakumar

  4. Centre for Advanced Power Systems, CAPS, Florida State University, Tallahassee, USA

    G. C. Montanari

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  1. M. Sivakumar
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  2. S. Chandrasekar
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  3. P. Uthirakumar
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  4. G. C. Montanari
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Correspondence to S. Chandrasekar.

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Sivakumar, M., Chandrasekar, S., Uthirakumar, P. et al. A Contribution to Environmentally-Compatible Energy Conversion: Characterization of Nano Structured Natural Ester Oil Decorated with Carbon Quantum Dots. J. Electr. Eng. Technol. 15, 2699–2709 (2020). https://doi.org/10.1007/s42835-020-00531-5

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  • DOI: https://doi.org/10.1007/s42835-020-00531-5

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