Dependence of TiO&lt;inf&gt;2&lt;/inf&gt; and ZnO nanoparticle concentration on electrical insulation characteristics of insulating oil

Hanai, Masahiro; Hosomi, Satohiko; Kojima, H.; Hayakawa, Naoki; Ōkubo, H.

doi:10.1109/ceidp.2013.6748164

Cited by 31 publications

(32 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These authors concluded that the addition of different TiO2 concentrations produced different increases in the breakdown strength of nanofluid samples. Similar results with TiO2 nanoparticles were obtained by Yue-fan et al [10,11] and Hanai et al [12]. Other papers have evaluated if the positive effect of nanoparticles on dielectric properties of mineral oil is kept with accelerated thermal aging.…”

Section: Introductionsupporting

confidence: 84%

Effect of TiO<inf>2</inf> nanoparticles on the performance of a natural ester dielectric fluid

Diego

Santisteban

Fernández

et al. 2017

2017 IEEE Electrical Insulation Conference (EIC)

View full text Add to dashboard Cite

Mineral oil has been frequently used in most of high voltage transformers. However, this oil has started to be replaced by vegetable oils. Additionally, different authors have found that mineral oil-based nanofluids have a potential in improving insulating properties of transformer oil. In order to improve the characteristics of a commercial vegetal oil, this work has used TiO2 nanoparticles to obtain a nanofluid whose ageing behavior at 150ºC for 300 hours has been studied.

show abstract

Section: Introductionsupporting

confidence: 84%

Effect of TiO<inf>2</inf> nanoparticles on the performance of a natural ester dielectric fluid

Diego

Santisteban

Fernández

et al. 2017

2017 IEEE Electrical Insulation Conference (EIC)

View full text Add to dashboard Cite

show abstract

“…In the following section the positive impulse breakdown voltage with respect to concentration and type of nanoparticles are presented. A lot of research has been carried out to measure the impulse breakdown strength of mineral oil-based and vegetable oil-based nanofluids [22,23,27,31,37,61,72]. Figure 10.…”

Section: Journal Of Nanomaterialsmentioning

confidence: 99%

A Review on Properties, Opportunities, and Challenges of Transformer Oil-Based Nanofluids

Rafiq

2016

Journal of Nanomaterials

132

View full text Add to dashboard Cite

The mineral oil or synthetic oil in conjunction with paper is mainly being applied as dielectric medium in many of the high voltage apparatus. However, the advent of high voltage levels such high voltage alternating current (HVAC) and high voltage direct current (HVDC) has prompted researchers to direct their focus onto an insulation system which can bear the rising high voltage levels. The modern insulating liquid material development is guided by various factors such as high electrical insulation requirements and other safety and economic considerations. Therefore transformer manufacturer companies have to design transformers with these new specific requirements. The transformer oil-based nanofluids with improved dielectric and thermal properties have the potential to replace mineral oil base products in the market place. They are favorable because they function more superior than mineral oil and they contribute definite insulating and thermal gains. This paper reviews recent status of nanofluids use as transformer oils. The nanofluids used as transformer oils are presented and their advantages are described in comparison with mineral oil. The multiple experimental works carried out by different researchers are described, providing an overview of the current research conducted on nanofluids. In addition scope and challenges being confronted in this area of research are clearly presented.

show abstract

“…Aiming at improvement of electrical insulation properties of insulating oil, various researches were conducted in the recent years on insulating oil with dispersed nanoparticles; due to addition of nanoparticles, a number of improvements in oil characteristics were confirmed, such as heat conductivity, permittivity, and AC breakdown voltage (BDV) [2][3][4][5]. However, much remains unknown about behavior of nanoparticles in insulating oil and breakdown mechanisms.…”

Section: Introductionmentioning

confidence: 99%

Improvement Mechanism of AC Breakdown Voltage of Insulating Oil with Dispersed Nanoparticles

Kojima

Kondo

Hanai

et al. 2017

Elect Comm in Japan

Self Cite

View full text Add to dashboard Cite

We investigated the fundamental insulation characteristics of insulating oil with dispersed nanoparticles. The AC breakdown voltage of the insulating oil increased by mixing the dispersed hydrophilic nanoparticles, because the hydrophilic nanoparticles absorbed moisture in the oil, which decreased the number of weak points in the oil for breakdown. In contrast, the hydrophobic nanoparticles did not contribute to the increase of AC breakdown voltage, and decreased the AC breakdown voltage. On the other hand, in the case of overdosing of nanoparticles, the aggregation of nanoparticles caused the decrease in the AC breakdown voltage of the oil, which depended upon the volume concentration of nanoparticles regardless of the diameter of nanoparticles. The aggregation of nanoparticles was led by dielectrophoresis phenomenon, which brought the gap length dependence of the AC breakdown voltage of the insulating oil with the dispersed nanoparticles, because the gradient of electric field strength at the gap was smaller in the case of shorter gap length. C⃝ 2017 Wiley Periodicals, Inc. Electron Comm Jpn, 100(12): 69-75, 2017; Published online in Wiley Online Library (wileyonlinelibrary.com).

show abstract

Dependence of TiO<inf>2</inf> and ZnO nanoparticle concentration on electrical insulation characteristics of insulating oil

Cited by 31 publications

References 6 publications

Effect of TiO<inf>2</inf> nanoparticles on the performance of a natural ester dielectric fluid

Effect of TiO<inf>2</inf> nanoparticles on the performance of a natural ester dielectric fluid

A Review on Properties, Opportunities, and Challenges of Transformer Oil-Based Nanofluids

Improvement Mechanism of AC Breakdown Voltage of Insulating Oil with Dispersed Nanoparticles

Contact Info

Product

Resources

About