Comprehensive and statistical investigation on the impact of alumina nanoparticles and hydrocarbon solvent upon the reliability of transformer liquid insulation composed of moringa oil

The application of nanofluids as an alternative to traditional insulating oils is one of the most promising new approaches to improving cooling and insulating efficiency and the design of electric transformers, which are bound by the state-of-the-art technology. Over the past two decades, and even n...

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Bibliographic Details
Published in:Biomass conversion and biorefinery 2024-03, Vol.14 (5), p.7197-7218
Main Authors: Rajesh Kanna, R, Ravindran, M, Carmel Sobia, M
Format: Article
Language:English
Subjects:
Aluminum oxide
Biotechnology
Energy
Fire point
Flash point
Hydrocarbons
Insulation
Interpolation
Kinematics
Mineral oils
Nanofluids
Nanoparticles
Neural networks
Original Article
Principal components analysis
Reliability
Renewable and Green Energy
Solvents
Statistical analysis
Thermal conductivity
Transformers
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Summary:The application of nanofluids as an alternative to traditional insulating oils is one of the most promising new approaches to improving cooling and insulating efficiency and the design of electric transformers, which are bound by the state-of-the-art technology. Over the past two decades, and even now, research has been conducted on nanofluids with the goal of using them as a coolant and dielectric medium in transformers. This work is proposed to study the reliability of moringa oil (MAOL) as an alternate liquid insulation with a comprehensive study with different concentrations of alumina (Al 2 O 3 ) nanoparticles and C 12 H 26 -C 15 H 32 hydrocarbon solvents. The reliability of proposed nanofluid samples is analyzed with the measurement of critical properties such as breakdown voltage, kinematic viscosity, flash point and fire point, pour point, thermal conductivity, and acid numbers according to IEC and ASTM standards. Based on the properties of nanofluids, the best sample is statistically analyzed with survival rate and probability of failure along with raw moringa oil and mineral oil. Also further ageing analysis with best nanofluid, moringa oil, and mineral oil (MLOL) is performed in real exposure in 1 kVA, 440/220 V for 720 h (30 days). The ageing performance is examined with measurement of critical properties and subsequent prediction of properties after 60 days and 90 days operation using Lagrange interpolation (LI), neural network (NN), and principal component analysis (PCA) to compare the modification in the properties of each sample. With this proposed work, it is found that moringa oil–based nanofluids have the reliable nature as an alternate liquid insulation for transformers.
ISSN:2190-6815
2190-6823
DOI:10.1007/s13399-023-04526-w