Fadhilah, Arkan (2025) Karakteristik Partial Discharge Nanofluida TiO2 Berbasis Ester Sintetis Bersirkulasi Akibat Variasi Kontaminan Selulosa dan Bentuk Elektroda. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Dalam studi ini dilakukan pengujian partial discharge (PD) pada minyak ester sintetis yang dicampur dengan nanopartikel titanium dioksida (TiO2) semikonduktif. Nanofluida ini terkontaminasi partikel selulosa dengan konsentrasi 0 g/L, 0,5 g/L, dan 1 g/L, serta sirkulasi minyak dengan kecepatan 0 m/s, 0,3 m/s, dan 0,5 m/s. Media uji dirancang untuk memompa minyak dengan kecepatan yang dapat disesuaikan dan dipantau oleh sensor aliran. Pengujian menggunakan elektroda jarum-pelat dengan variasi ujung runcing, kotak, dan tumpul untuk mendapatkan nilai partial discharge inception voltage (PDIV) dan grafik phase resolved partial discharge (PRPD). Hasil analisis menunjukkan bahwa peningkatan konsentrasi selulosa menurunkan PDIV, sedangkan peningkatan kecepatan sirkulasi meningkatkannya. Urutan konfigurasi elektroda berdasarkan rata-rata PDIV dari tertinggi ke terendah adalah tumpul-datar, kotak-datar, dan runcing-datar. Analisis PRPD menunjukkan bahwa peningkatan konsentrasi selulosa meningkatkan jumlah titik PD dan menggeser klaster pada pola PRPD ke titik tengah siklus, dengan densitas yang lebih padat. Sebaliknya, peningkatan kecepatan sirkulasi menurunkan jumlah titik PD dan menyebabkan klaster konsentrasi lebih menyebar dan tidak berpusat pada titik tengah siklus, dengan densitas yang lebih menyebar. Urutan konfigurasi elektroda berdasarkan jumlah total titik PD dari tertinggi ke terendah adalah runcing-datar, kotak-datar, dan tumpul-datar. Seluruh plot menunjukkan bentuk yang asimetris dengan siklus positif yang lebih dominan, diakibatkan oleh aktivitas PD yang dihasilkan oleh medan non homogen.
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In this study, partial discharge (PD) testing was conducted on synthetic ester oil mixed with semiconductive titanium dioxide (TiO2) nanoparticles. This nanofluid was contaminated with cellulose particles at concentrations of 0 g/L, 0.5 g/L, and 1 g/L, along with oil circulation speeds of 0 m/s, 0.3 m/s, and 0.5 m/s. The testing medium was designed to pump oil at adjustable speeds monitored by flow sensors. The tests utilized needle-plane electrodes with variations in tip shapes, including pointed, square, and blunt, to determine the partial discharge inception voltage (PDIV) and the phase-resolved partial discharge (PRPD) graphs. The analysis results indicated that an increase in cellulose concentration led to a decrease in PDIV, while an increase in circulation speed resulted in an increase in PDIV. The order of electrode configurations based on average PDIV from highest to lowest was blunt-plane, square-plane, and sharp-plane. PRPD analysis revealed that an increase in cellulose concentration raised the number of PD points and shifted clusters in the PRPD pattern towards the midpoint of the cycle, resulting in a denser distribution. Conversely, an increase in circulation speed reduced the number of PD points and caused the concentration clusters to spread out, not centering on the midpoint of the cycle, leading to a more dispersed density. The order of electrode configurations based on the total number of PD points from highest to lowest was sharp-plane, square-plane, and blunt-plane. All plots exhibited an asymmetric shape with a more dominant positive cycle, attributed to PD activity generated by a non-homogeneous field.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Bentuk Elektroda, Nanofluida TiO2, Partial Discharge, Selulosa, Sirkulasi, Cellulose, Circulation, Electrode Configuration, Partial Discharge, TiO2 Nanofluids |
| 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 > TK452 Electric apparatus and materials T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK6565.T7 Transformers |
| Divisions: | Faculty of Intelligent Electrical and Informatics Technology (ELECTICS) > Electrical Engineering > 20201-(S1) Undergraduate Thesis |
| Depositing User: | Arkan Fadhilah |
| Date Deposited: | 25 Jul 2025 08:46 |
| Last Modified: | 25 Jul 2025 08:46 |
| URI: | http://repository.its.ac.id/id/eprint/121637 |
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