Pengaruh Lama Perendaman Terhadap Breakdown Voltage pada Kertas Isolasi Transformator Terendam Minyak Mineral Bercampur Nanopartikel Semikonduktif TiO2

Kurniasari, Devita Ramadhani (2023) Pengaruh Lama Perendaman Terhadap Breakdown Voltage pada Kertas Isolasi Transformator Terendam Minyak Mineral Bercampur Nanopartikel Semikonduktif TiO2. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Sistem isolasi yang paling umum digunakan di sekitar transformator daya merupakan isolasi kertas terendam minyak. Studi ini berfokus pada pengaruh lama perendaman terhadap breakdown voltage kertas isolasi terendam minyak mineral campuran nanopartikel TiO2. Lama perendaman yang diuji adalah 0, 8, 16, 24, dan 32 jam dengan menggunakan konsentrasi terbaik dari penelitian sebelumnya yaitu 0,02 g/L. Pengujian dilakukan menggunakan tegangan tinggi DC. Data hasil pengujian breakdown voltage akan dianalisis menggunakan metode probabilitas Weibull. Selanjutnya, kandungan unsur pada kertas isolasi sebelum dan setelah perendaman dalam minyak mineral campuran nanopartikel TiO2 diamati menggunakan SEM (Scanning Electron Microscope) dan EDS (Energy Dispersive X-Ray Spectroscopy). Pengujian breakdown voltage kertas isolasi terendam minyak mineral campuran nanopartikel TiO2 tertinggi berada pada lama perendaman 16 jam dengan nilai rata-rata 23,93 kV dengan peningkatan 286,65% dibandingkan dengan lama perendaman 0 jam atau tanpa perendaman yang memiliki nilai rata-rata 6,19 kV. Dapat dikatakan bahwa, terjadi peningkatan nilai breakdown voltage dari kertas isolasi terendam nanofluida karena terdapat kandungan dari nanopartikel TiO2 seperti pada hasil pengujian SEM dan EDS. Pengujian SEM dan EDS yang menunjukkan bahwa kandungan TiO2 yang terkandung dalam kertas isolasi paling tinggi berada pada 24 jam yaitu sebesar 5,13%. Semakin lama kertas isolasi terendam dalam nanofluida, maka nanopartikel yang meresap pada kertas isolasi semakin banyak.
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The most commonly used insulation system around power transformers is oil-immersed paper insulation. This study focuses on the effect of immersion duration on the breakdown voltage of insulation paper immersed in a mixture of mineral oil and TiO2 nanoparticle. The immersion durations tested were 0, 8, 16, 24, and 32 hours, using the optimal concentration determined in previous research, which is 0.02 g/L. The testing was conducted using high DC voltage. The data obtained from the breakdown voltage testing will be analyzed using the Weibull probability method. Furthermore, the elemental content of the insulation paper before and after immersion in the mixture of mineral oil and TiO2 nanoparticle was observed using SEM (Scanning Electron Microscope) and EDS (Energy Dispersive X-Ray Spectroscopy). The highest breakdown voltage of the insulation paper immersed in the mixture of TiO2 nanoparticle-enhanced mineral oil was observed at an immersion duration of 16 hours, with an average value of 23.93 kV, which is a 286.65% increase compared to the 0 hour immersion or no immersion, which had an average value of 6.19 kV. It can be concluded that the breakdown voltage of the insulation paper increases when it is immersed in the nanofluid due to the presence of TiO2 nanoparticles, as indicated by the SEM and EDS results. SEM and EDS testing showed that the highest TiO2 content in the insulation paper was observed at the 24 hour immersion, with a value of 5.13%. Therefore, the longer the insulation paper is immersed in the nanofluid, the greater the amount of nanoparticles absorbed into the insulation paper.

Item Type:	Thesis (Other)
Additional Information:	RSE 621.3 Kur p-1 2023
Uncontrolled Keywords:	DC Breakdown Voltage, Kertas Isolasi, Kertas Isolasi Terendam Minyak, Minyak Mineral, Nanopartikel TiO2, : DC Breakdown Voltage, Insulation Paper, Oil-Impregnated Paper, Mineral Oil, TiO2 Nanoparticles
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK2551 Electric transformers. T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK3401 Insulation and insulating materials T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK6565.T7 Transformers
Divisions:	Faculty of Electrical Technology > Electrical Engineering > 20201-(S1) Undergraduate Thesis
Depositing User:	Devita Ramadhani Kurniasari
Date Deposited:	27 Jul 2023 07:41
Last Modified:	06 Oct 2023 02:26
URI:	http://repository.its.ac.id/id/eprint/99557

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