Finite Element Based Comparative Analysis of Positive Streamers in Multi Dispersed Nanoparticle Based Transformer Oil

IF 1.3 Q3 ENGINEERING, MULTIDISCIPLINARY

International Journal of Engineering and Technology Innovation Pub Date : 2021-08-09 DOI:10.46604/ijeti.2021.7681

Mihir Bhatt, P. Bhatt

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引用次数: 1

Abstract

The dispersion of dissimilar nanoparticles (NPs) in transformer oil (TO) has a major impact on fast propagating positive streamers. This work investigates the positive streamer dynamics in TO modified by dispersing both Fe3O4 and Al2O3 NPs at a homogenous concentration. The hydrodynamic drift diffusion model of positive streamer evolution and propagation are solved using the commercial software package COMSOL Multiphysics. The impact of multiple NPs (MNPs) has been analysed for streamer propagation, electric field intensity, electron density, and space charge density of modified TO. MNPs successfully reduce streamer propagation velocity by 50%, 17%, and 37.5% comparing to pure oil, Fe3O4 based nanodielectric fluids (NDFs), and Al2O3 based NDFs, respectively. The spatial distribution of electron density reveals the loss of electrons from the ionization region until the saturation of NPs. A comparative study demonstrates that MNPs significantly alter the streamer dynamics and augment the dielectric strength of TO compared to individual NPs.

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基于多分散纳米颗粒基变压器油中正流光的有限元对比分析

不同纳米颗粒(NPs)在变压器油(TO)中的分散对快速传播的正拖缆有重要影响。本研究研究了均匀分散Fe3O4和Al2O3纳米粒子修饰TO中的正流光动力学。利用商用软件COMSOL Multiphysics求解了正流演化和传播的流体动力漂移扩散模型。分析了多个NPs (MNPs)对改性TO的流光传播、电场强度、电子密度和空间电荷密度的影响。与纯油、基于Fe3O4的纳米介质流体(ndf)和基于Al2O3的ndf相比，MNPs成功地将流光传播速度分别降低了50%、17%和37.5%。电子密度的空间分布揭示了电离区直到NPs饱和为止的电子损失。一项比较研究表明，与单个np相比，MNPs显著改变了流光动力学并增加了TO的介电强度。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Engineering and Technology Innovation ENGINEERING, MULTIDISCIPLINARY-

CiteScore

2.80

自引率

0.00%

发文量

审稿时长

12 weeks

期刊介绍： The IJETI journal focus on the field of engineering and technology Innovation. And it publishes original papers including but not limited to the following fields: Automation Engineering Civil Engineering Control Engineering Electric Engineering Electronic Engineering Green Technology Information Engineering Mechanical Engineering Material Engineering Mechatronics and Robotics Engineering Nanotechnology Optic Engineering Sport Science and Technology Innovation Management Other Engineering and Technology Related Topics.