NDLI: Breakdown performance of transformer oil in the presence of single-phase nanocrystalline ZnO and nano-partial substitution

Content Provider	IET Digital Library
Author	Sabiha, Nehmdoh A. Ghoneim, Sherif S M. Hessien, Mahmoud M.
Abstract	In this study, newly structured nanoparticles are synthesised and incorporated in the transformer oil for enhancing the dielectric properties. A new nanocrystalline series of zinc oxide (ZnO) and ZnO partially substituted by lanthanum oxide is presented for the first time, where the precursor technique is utilised to create the nano-powders. Different partial substitutions facilitate to manipulate nanocrystalline sizes, and therefore the effect on nanofluid dielectric characteristics is attained. Another factor during the laboratory nanoparticles preparation is considered that the precursor is annealed at different temperatures. The nanocrystalline phase compositions are experimentally examined and evaluated using X-ray diffraction and transmission electron microscope. Accordingly, single-phase and multi-phase nanocrystalline powders are ascertained. The transformer oil incorporated with nanoparticles is prepared and its dielectric strength is measured using an oil breakdown voltage tester. The measured dielectric strength of transformer oil with and without nanoparticles is statistically evaluated using Weibull distribution. The most appropriate nanofluid and concentration are estimated experimentally. Toward interpreting the nanofluid dielectric enhancement, their electric field distribution is numerically evaluated at different nanoparticle concentrations using COMSOL multiphysics. This study supports the analysis and optimisation of transformer oil dielectric performance.
Starting Page	737
Ending Page	745
Page Count	9
ISSN	17518822
Volume Number	13
e-ISSN	17518830
Issue Number	Issue 5, Jul (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-smt/13/5
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-smt.2018.5375
Journal	IET Science, Measurement & Technology
Publisher Date	2019-02-28
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Annealing Processes Annealing Processes in Semiconductor Technology Breakdown Performance COMSOL Multiphysics Dielectric Breakdown And Discharges Dielectric Breakdown And Space-charge Effects Dielectric Strength Electric Breakdown Electric Field Distribution Electric Strength II-VI And III-V SemiConductor II-VI SemiConductor Laboratory Nanoparticle Preparation Lanthanum Compound Lanthanum Oxide Low-Dimensional Structure: Growth, Structure And Nonelectronic Property Multiphase Nanocrystalline Powder Nanocrystalline Phase Compositions Nanocrystalline Series Nanocrystalline Sizes Nanofabrication Nanofluid Dielectric Characteristic Nanofluid Dielectric Enhancement Nanofluidics Nanometre-Scale Semiconductor Fabrication Technology Nanopartial Substitution Nanoparticle Nanoparticle Concentrations Nanotube And Nanostructured Material Oil Breakdown Voltage Tester Precursor Technique Scanning Electron Microscopy Semiconductor Growth Single-phase Nanocrystalline ZnO Structure of Solid Clusters Structured NanoParticle Transformer And Reactors Transformer Oil Transformer Oil Dielectric Performance Transmission Electron Microscopy Weibull Distribution Wide Band Gap SemiConductor X-Ray Diffraction Zinc Compound Zno ZnO-La2O3
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Electrical and Electronic Engineering

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