Effects of Mixed Fe3O4 and TiO2 Nanoparticles on Dielectric Characteristics and AC Breakdown Voltage Phenomenon of RBDP Olein under Various Thermal Conditions

Hariyadi, Dimas Vidiandaru (2023) Effects of Mixed Fe3O4 and TiO2 Nanoparticles on Dielectric Characteristics and AC Breakdown Voltage Phenomenon of RBDP Olein under Various Thermal Conditions. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Transformator tegangan tinggi adalah salah satu perangkat paling penting dalam industri tenaga. Dengan peningkatan permintaan daya, daya terukur dari transformator tergangan tinggi juga meningkat dengan cepat. Oleh karena itu, kebutuhan untuk menyediakan bahan isolasi untuk transformator tanpa risiko kegagalan sangat penting. Saat ini, nanofluida adalah salah satu bahan isolasi yang paling banyak diteliti. Meskipun banyak penelitian terdahulu telah dilakukan tentang kekuatan breakdown nanofluida, masih kurangnya penelitian tentang pengaruh berbagai kondisi termal terhadap karakteristik dielektrik nanofluida berbasis minyak RBDP Olein sebagai isolasi tegangan tinggi di masa depan. Oleh karena itu, dalam penelitian ini, dilakukan pengujian terhadap efek campuran nanopartikel konduktif dan semikonduktif terhadap respons dielektrik nanofluida berbasis minyak RBDP Olein dengan pengaruh berbagai kondisi termal dari 30°C, 50°C, 80°C, dan 110°C. Besi (II, III) oksida, Fe3O4 (konduktif) dan titanium dioksida, TiO2 (semikonduktif) digunakan sebagai nanopartikel karena kemampuan mereka untuk menjebak elektron dan memiliki laju pelarutan yang lebih tinggi dalam suspensi netral. Respons karakteristik listrik seperti; konstanta dielektrik, kerugian dieletrik dan tegangan tembus diukur dari minyak dasar dan 24 jenis sampel nanofluida. Secara keseluruhan, temuan penelitian ini menunjukan bahwa kenaikan suhu memiliki dampak signifikan terhadap karakteristik dielektrik dan tegangan tembus nanofluida. Ketika suhu naik dari 30°C hingga 110°C, terjadi peningkatan dalam kerugian dielektrik dan tegangan breakdown. Fenomena ini dapat dijelaskan oleh peningkatan mobilitas muatan pada suhu yang lebih tinggi, yang mendorong pertukaran energi dan menghasilkan kerugian dielektrik yang lebih tinggi. Peningkatan suhu pada setiap sampel nanofluida juga berdampak signifikan terhadap tegangan breakdown yang terjadi. Seiring dengan peningkatan suhu dari 30°C hingga 110°C, terjadi peningkatan dalam tegangan breakdown yang disebabkan oleh penurunan viskositas pada setiap sampel nanofluida.
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High-voltage transformers are one of the most important devices in the power industry. With the increasing demand for power, the measurable power of high-voltage transformers is also rapidly increasing. Therefore, the need to provide insulation materials for transformers without the risk of failure is crucial. Currently, nanofluids are one of the most extensively researched insulation materials. Although previous research has been conducted on the breakdown strength of nanofluids, there is still a lack of research on the influence of various thermal conditions on the dielectric characteristics of oil-based RBDP Olein nanofluids as high-voltage insulation in the future. Therefore, in this study, testing was conducted on the effect of mixing conductive and semiconductive nanoparticles on the dielectric response of RBDP Olein-based nanofluids under the influence of various thermal conditions of 30°C, 50°C, 80°C, and 110°C. Iron (II, III) oxide, Fe3O4 (conductive), and titanium dioxide, TiO2 (semiconductive), were used as nanoparticles due to their ability to trap electrons and have a higher dissolution rate in neutral suspensions. Electrical characteristic responses such as dielectric constant, dielectric loss, and breakdown voltage were measured for the base oil and 24 types of nanofluid samples. Overall, the findings of this research indicate that an increase in temperature has a significant impact on the dielectric characteristics and breakdown voltage of nanofluids. As the temperature increases from 30°C to 110°C, there is an increase in dielectric loss and breakdown voltage. This phenomenon can be explained by the increased charge mobility at higher temperatures, which promotes energy exchange and results in higher dielectric losses. The increase in temperature in each nanofluid sample also significantly affects the breakdown voltage that occurs. With the temperature increasing from 30°C to 110°C, there is an increase in breakdown voltage caused by a decrease in viscosity in each nanofluid sample.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Nanopartiekel Fe3O4, Nanopartikel TiO2, Minyak RBDP Olein, Tegangan Tembus, Kerugian Dielektrik, Konstanta Dielektrik. =========================================================== Fe3O4 Nanoparticles, TiO2 Nanoparticles, RBDP Olein Oil, Breakdown Voltage, Dielectric Loss, Dielectric Constant.
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK3401 Insulation and insulating materials
Divisions:	Faculty of Intelligent Electrical and Informatics Technology (ELECTICS) > Electrical Engineering > 20201-(S1) Undergraduate Thesis
Depositing User:	Dimas Vidiandaru Hariyadi
Date Deposited:	28 Jul 2023 01:20
Last Modified:	28 Jul 2023 01:20
URI:	http://repository.its.ac.id/id/eprint/99436

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