Analisa Short Circuit dan Pengaturan Koordinasi Proteksi Akibat Rekonfigurasi Listrik AC Menjadi DC Sumber Listrik Hybrid Diesel Generator dan Photovoltaic Pada Kapal Tanker

Almonda, Arialdi (2022) Analisa Short Circuit dan Pengaturan Koordinasi Proteksi Akibat Rekonfigurasi Listrik AC Menjadi DC Sumber Listrik Hybrid Diesel Generator dan Photovoltaic Pada Kapal Tanker. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Distribusi utama listrik AC pada kapal memiliki nilai impedansi yang lebih tinggi dibandingkan dengan listrik DC sehingga memberikan losses distribusi yang lebih besar. Dikarenakan losses yang besar pada sistem distribusi diperlukan keluaran daya yang lebih besar pula untuk menyeimbangkan daya yang diperlukan dan daya yang hilang. Dalam upaya untuk menurunkan nilai impedansi pada distribusi listrik di kapal dilakukan rekonfigurasi sistem distribusi listrik utama dari AC menjadi DC. Perubahan yang dilakukan akan mempengaruhi besaran arus short circuit yang mungkin terjadi. Penambahan hybrid photovoltaic sebagai sumber listrik akan menyebabkan perubahan dari nilai short circuit. Short circuit adalah gangguan umum berupa arus berlebih yang sering timbul pada kelistrikan di kapal baik karena faktor internal maupun eksternal. Penelitian ini menggunakan software simulator sistem distribusi listrik untuk melakukan perbandingan besaran arus short circuit yang berkontribusi pada masing-masing jenis distribusi. Hasil simulasi akan dianalisis untuk membandingkan mana yang lebih baik digunakan sebagai distribusi listrik utama antara listrik AC dan DC. Pada penelitian ini diperoleh nilai rata-rata arus short circuit yang terjadi pada kondisi sailing sebelum dilakukan rekonfigurasi adalah sebesar 10,494 kA sedangkan setelah rekonfigurasi sebesar 1,844 kA. Kemudian pada kondisi loading/unloading nilai rata-rata arus short circuit sebelum rekonfigurasi sebesar 13,401 kA dibandingkan dengan setelah rekonfigurasi yaitu 1,686 kA. Selain itu juga dilakukan analisis pada kondisi leaving/arriving port yang mana didapatkan nilai rata-rata arus short circuit yang terjadi sebesar 12,897 kA sedangkan setelah rekonfigurasi sebesar 2,003 kA. Terakhir pada kondisi at port didapatkan nilai rata-rata arus short circuit sebelum rekonfigurasi sebesar 6,090 kA dan setelah rekonfigurasi sebesar 1,243 kA. Gangguan arus short circuit yang mungkin terjadi perlu dilakukan pengamanan melalui sebuah koordinasi proteksi menggunakan circuit breaker.
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The main distribution of AC power on ships has a higher impedance value than DC electricity, thus providing greater distribution losses. Due to the large losses in the distribution system, a larger power output is required to balance the required power and lost power. In an effort to reduce the impedance value in the electricity distribution on board, the main electricity distribution system was reconfigured from AC to DC. Changes made will affect the amount of short circuit current that may occur. The addition of a photovoltaic hybrid as a power source will cause a change in the value of the short circuit. Short circuit is a common disturbance in the form of excess current that often occurs in the electricity on board, either due to internal or external factors. This research uses electrical distribution system simulator software to compare the amount of short circuit current that contributes to each type of distribution. The simulation results will be analyzed to compare which one is better used as the main power distribution between AC and DC electricity. In this study, the average value of short circuit current that occurs in sailing conditions before reconfiguration is 10,494 kA while after reconfiguration is 1,844 kA. Then in loading/unloading conditions, the average value of short circuit current before reconfiguration is 13,401 kA compared to after reconfiguration, which is 1,686 kA. In addition, an analysis was also carried out on the condition of the leaving/arriving port which obtained the average value of the short circuit current that occurred was 12.897 kA while after reconfiguration was 2.003 kA. Finally, in the at port condition, the average value of short circuit current before reconfiguration is 6.090 kA and after reconfiguration is 1.243 kA. Short circuit current disturbances that may occur need to be secured through a protective coordination using a circuit breaker.

Item Type:	Thesis (Other)
Additional Information:	RSSP 623.850 3 Alm a-1 2022
Uncontrolled Keywords:	Rekonfigurasi Sistem Distribusi Listrik, Hybrid Photovoltaic , Short Circuit, Koordinasi Proteksi, Electrical Distribution System Reconfiguration, Hybrid Photovoltaic, Short Circuit, Protection Coordination
Subjects:	H Social Sciences > HE Transportation and Communications > HE566.T3 Tankers T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK3030 Electric power distribution systems
Divisions:	Faculty of Marine Technology (MARTECH) > Marine Engineering > 36202-(S1) Undergraduate Thesis
Depositing User:	- Davi Wah
Date Deposited:	31 Oct 2024 11:26
Last Modified:	31 Oct 2024 11:26
URI:	http://repository.its.ac.id/id/eprint/115761

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