Effect of magnetic nanoparticles on the lightning impulse breakdown voltage of transformer oil

Ghasemi, Jalal; Jafarmadar, Samad; Nazari, Meysam

doi:10.1016/j.jmmm.2015.04.045

Cited by 29 publications

(22 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Disregarding the "rogue" result at 0.003 g/L, the AC BV increased with increasing NP concentration up to 0.006 g/L and decreased at higher concentrations, becoming less than the AC BV of MO at 0.05 g/L. The same effect has been reported in [54] and [55], but with different optimal NP concentrations. It was suggested in [56] that the reduction in AC BV at higher NP concentrations might be due to the accumulation of conductive NP chains near the electrodes, facilitating discharges.…”

Section: Effect Of Np Concentration On Ac Bvsupporting

confidence: 74%

See 1 more Smart Citation

Analysis of Water Solubility in natural-ester based nanodielectric fluids

Perez

García

Primo

et al. 2019

2019 IEEE 20th International Conference on Dielectric Liquids (ICDL)

View full text Add to dashboard Cite

Una tesis doctoral viene firmada por una sola persona, pero hay mucha gente que de un modo u otro ha participado en que esta sea posible, por eso quiero agradecérselo a todas esas personas.En primer lugar, quiero expresar mi más sincera gratitud a mis tutores Dr. Juan Carlos Burgos y Dra. Belén García, por darme la oportunidad de realizar mi tesis doctoral con ellos. Su amplio conocimiento y su nivel de esfuerzo e implicación son inestimables para la finalización de este trabajo. Desde un primer momento creyeron en mi y me han ayudado en todo momento durante este recorrido de más de cuatro años. Gracias.También quiero aprovechar la oportunidad para agradecer a la Universidad Carlos III de Madrid la oportunidad que brinda ofreciendo los contratos predoctorales para poder cursar una tesis doctoral formándonos, además, como profesores. Así mismo, quiero agradecer al resto de personal del departamento de Ingeniería Eléctrica, especialmente al Dr. Guillermo Robles y al Dr. Juan Manuel Martínez con los que he compartido congresos y buenos momentos y a Cristina Vega por su buen humor todas las mañanas.Además, en el plano profesional tengo que dar mi gratitud a los profesores

show abstract

Section: Effect Of Np Concentration On Ac Bvsupporting

confidence: 74%

“…conductive, semi-conductive, and insulating NP, but the optimal NP concentrations seem to be dependent on the particle type, the nature of the base fluid, and the manufacturing process [50,51,54,55,56].…”

Section: Effect Of Np Concentration On Ac Bvmentioning

confidence: 99%

Analysis of Water Solubility in natural-ester based nanodielectric fluids

Perez

García

Primo

et al. 2019

2019 IEEE 20th International Conference on Dielectric Liquids (ICDL)

View full text Add to dashboard Cite

show abstract

“…Furthermore, the average streamer velocity for both positive and negative LI BDV was increased by 21% and 14%, respectively. Ghasemi et al [112] investigated the ability to improve lightning BDV in transformer oil of Fe 3 O 4 nanoparticles with three different volume concentrations (0.20, 0.40, 0.60%). The surface of nanoparticles was modified using oleic acid, which allowed achieving the stability of nanofluids without a precipitation longer than four months.…”

Section: Nitrides and Other Nanoparticlesmentioning

confidence: 99%

Nanofluids in the Service of High Voltage Transformers: Breakdown Properties of Transformer Oils with Nanoparticles, a Review

2018

View full text Add to dashboard Cite

The continuous development of electrical systems and high voltage transformers builds the need for looking for new insulating media or to improve the insulating properties of commercially available transformer oils (TO) by various modification techniques. One of these techniques is the modification of existing mineral oils by the addition of different types of nanoparticles in various concentrations. These types of materials, suspensions of nanoparticles called nanofluids, have found numerous applications in the energy industry, especially in heat exchanger systems and solar cells. Much research has been done on attempts to replace mineral oils (MO), which are harmful for the environment, with natural ester oils (NE), but to make this possible, it is necessary to improve the insulating properties of these oils, for example by adding nanoparticles. This paper presents an extensive overview of the insulating properties; including for AC, DC and the lightning impulse breakdown voltage; for both mineral and natural ester oils containing various type of nanoparticles (NP). It is presented that the use of nanofluids could improve the efficiency of existing high voltage infrastructures with a low financial cost.

show abstract

“…Previous works have examined the mineral oil and vegetable oil based nanofluids based on electrically conductive, semi-conductive and insulative nanoparticles which focus on the AC/lightning breakdown voltage, streamer, partial discharge, dielectric properties and thermal ageing [3][4][5][6][10][11][12][13][14][15][16][17][18][19][20][21]. Majority of the studies focus on the AC breakdown voltages examination whereby different types of nanoparticles such as Iron (II,III) Oxide (Fe 3 O 4 ), Iron (III) Oxide (Fe 2 O 3 ), Zinc Oxide (ZnO), Silicon Oxide (SiO 2 ), Titanium Oxide (TiO 2 ), Aluminium Oxide (Al 2 O 3 ), Copper (II) Oxide (CuO), Zirconium Dioxide (ZrO 2 ), Multi-wall Carbon Nanotubes (MWCNT) and Aluminium Nitride (AIN) have been considered [4,5,11,[19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38].…”

Section: Introductionmentioning

confidence: 99%

Impact of Fe3O4, CuO and Al2O3 on the AC Breakdown Voltage of Palm Oil and Coconut Oil in the Presence of CTAB

et al. 2019

View full text Add to dashboard Cite

This paper presents an experimental study on the AC breakdown voltages of Refined, Bleached and Deodorized Palm Oil (RBDPO) Olein and Coconut Oil (CO) in the presence of conductive (Iron (II,III) Oxide, Fe3O4), semi-conductive (Copper (II) Oxide, CuO) and insulative (Aluminium Oxide, Al2O3) nanoparticles without and with surfactant. The type of surfactant used in this study was Cetyl Trimethyl Ammonium Bromide (CTAB). The volume concentrations range of Fe3O4, CuO and Al2O3 was varied from 0.001% to 0.05%. Transmission Electron Microscope (TEM) was used to characterize the nanoparticles in RBDPO and CO. AC breakdown voltage tests were carried out for RBDPO and CO of which the AC breakdown voltage at 1% probability was determined based on Weibull distribution. It is found that only Al2O3 can improve the average AC breakdown voltage of RBDPO and CO. The AC breakdown voltages at 1% probability for RBDPO and CO can be improved through introduction of Fe3O4, CuO and Al2O3 at certain volume concentrations. Al2O3 provides the highest enhancement of AC breakdown voltages at 1% probability for RBDPO and CO with the highest percentage of improvement can be up to 52%. CTAB has no clear effect on the improvement of AC breakdown voltages of RBDPO and CO based Fe3O4, CuO and Al2O3 nanofluids.

show abstract

Effect of magnetic nanoparticles on the lightning impulse breakdown voltage of transformer oil

Cited by 29 publications

References 7 publications

Analysis of Water Solubility in natural-ester based nanodielectric fluids

Analysis of Water Solubility in natural-ester based nanodielectric fluids

Nanofluids in the Service of High Voltage Transformers: Breakdown Properties of Transformer Oils with Nanoparticles, a Review

Impact of Fe3O4, CuO and Al2O3 on the AC Breakdown Voltage of Palm Oil and Coconut Oil in the Presence of CTAB

Contact Info

Product

Resources

About