'Azmi, Muhammad Faisal Ijlal (2019) Deteksi Partial Discharge Akibat Partikel Benda Melayang Terhadap Karakteristik Breakdown Pada Isolasi Cair Menggunakan Metode Ultra High Frequency. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Partial discharge adalah Peluahan sebagian yang secara definisi mempunyai arti pelepasan muatan listrik sebagian atau keseluruhan antara dua elektroda yang seharusnya tidak terhubung, sehingga berakibat timbulnya bunga api pada suatu bahan isolasi. Apabila dibiarkan hal ini dapat berpengaruh terhadap ketahanan isolasi yang menyebabkan kegagalan isolasi. Isolasi merupakan suatu media yang memisahkan antara bagian bertegangan dan tidak bertegangan pun juga antara dua konduktor lebih yang memiliki beda tegangan. Isolasi sendiri memiliki kekuatan dielektrik yang mana jika terjadi penurunan kekuatan dielektrik akibat beda potensial yang sangat tinggi menyebabkan terjadinya kegagalan (breakdown). Pada tugas akhir ini membahs tentang deteksi partial discharge akibat kontaminan melayang terhadap tegangan breakdown pada isolasi cair dengan metode UHF, dimana PD yang dideteksi tidak tampak secara visual sehingga di tugas akhir ini menggunakan antenna monopole untuk menangkap medan elektromagnetik saat objek pengujian disuplai tegangan tinggi. Dimana hasil sinyal elektromagnetik yang dideteksi antenna akan divalidasi oleh HFCT bahwa yang terdeteksi adalah benar partial discharge. Pada pengujian ini menggunaklan kontaminan berukuran masing-masing 5 mm dan 10 mm. Dan hasil dari pengujian ini selama pre-breakdown PD yang terdeteksi paling banyak jumlahnya adalah saat kontaminan berada dijarak 10mm atau pusat celah elektroda dimasing-masing kontaminan. Dan tegangan tembus paling tinggi bernilai 80 kV yang menandakan isolasi minyak masih baik dan dapat digunakan.
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Partial discharge is a partial discharge which by definition means the partial or total release of electric charge between two electrodes which should not be connected, resulting in sparks on an insulating material. If left unchecked this can affect the resistance of insulation which causes insulation failure. Isolation is a media that separates between the voltage and non-voltage parts also between two more conductors which have a voltage difference. Insulation it self has a dielectric strength which if there is a decrease in dielectric strength due to a very high potential difference causes a breakdown. In this final assignment, the detection of partial discharge is due to floating contaminants against breakdown voltage in liquid isolation using the UHF method, where PD is detected visually so that in this final project uses a monopole antenna to capture electromagnetic fields when the test object is supplied with high voltage. Where the result of an antenna-detected electromagnetic signal will be validated by HFCT that what is detected is a true partial discharge. In this test using contaminants measuring 5 mm and 10 mm each. And the results of this test during the PD pre-breakdown detected the most amount is when the contaminants are at a distance of 10mm or the center of the electrode gap in each contaminant. And the highest breakdown voltage is 80 kV which indicates that oil insulation is still good and can be used.
| Item Type: | Thesis (Other) |
|---|---|
| Additional Information: | RSE 621.319 37 Azm d-1 2019 |
| Uncontrolled Keywords: | Ultra high frequency, Breakdown characteristics, Partial Discharge, HFCT |
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK201 Electric Power Transmission T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK6565.T7 Transformers T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK7871.6 Antennas (Electronics) |
| Divisions: | Faculty of Electrical Technology > Electrical Engineering > 20201-(S1) Undergraduate Thesis |
| Depositing User: | Muhammad Faisal Ijlal Azmi |
| Date Deposited: | 07 Mar 2023 02:52 |
| Last Modified: | 07 Mar 2023 02:52 |
| URI: | http://repository.its.ac.id/id/eprint/63610 |
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