Putra, Denny Pramana (2017) Kajian Teknis Pemilihan Generator Bertegangan Menengah Terhadap Perubahan Kapal Tugboat Menjadi Utility/Supply Vessel Menggunakan Analisa Load Flow Dan Short Circuit. Undergraduate thesis, InstitutTeknologiSepuluhNopember.
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Abstract
Kegiatan eksplorasi dan produksi minyak dan gas bumi selalu membutuhkan suplai berkala untuk melayani berbagai macam kebutuhan ke offshore platform, antara lain makanan, air bersih, bahan bakar, dan peralatan untuk keperluan pengeboran. Kapal jenis utility/supply vessel yang dapat memberikan kebutuhkan itu semua. Generator bertegangan rendah digunakan untuk menyuplai daya yang dibutuhkan kapal tersebut. Karena daya yang dibutuhkan oleh peralatan kapal besar, maka arus yang dihasilkan akan besar. Pembahasan dari penelitian ini di titik beratkan pada penggantian generator bertegangan rendah menjadi generator bertegangan menengah menggunakan analisis load flow dan short circuit. Pada simulasi load flow analysis didapatkan nilai arus dan daya yang nanti akan di jadikan perbandingan. Dari penelitian ini pada main bus didapatkan nilai arus generator bertegangan rendah sebesar 920 Ampere dan pada generator bertegangan menengah sebesar 73,7 Ampere. Untuk daya pada main bus yang dihasilkan oleh generator bertegangan rendah sebesar 707 kW dan pada generator bertegangan menengah sebesar 739 kW. Short circuit analysis menghasilkan arus hubungan singkat saat kondisi berlayar pada generator bertegangan rendah sebesar 35,9 kA dan pada generator bertegangan menengah sebesar 2,5 kA di main bus. Saat kondisi manouvering pada main bus generator bertegangan rendah menghasilkan arus hubungan singkat sebesar 35,9 dan pada generator bertegangan menengah sebesar 2,5 kA. Kondisi Bongkar muat pada main bus generator bertegangan rendah menghasilnya nilai arus hubungan singkat sebesar 36 kA dan pada generator bertegangan menengah sebesar 2,5 kA.
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Oil and gas exploration and production activities always require periodic supplies to serve a wide range of needs to offshore platforms, including food, clean water, fuel, and equipment for the exertion purposes. The ship type which can provide all the needs is the utility/supply vessel. A low-voltage generator is used to supply the required power of the vessel. Due the large amount of power that the ship equipment needed, the current result will be large as well. The discussion of this research is emphased on the replacement of low-voltage generators into medium-voltage generators using load flow analysis and short circuit. In the simulation of load flow analysis obtained the value of current and power which will be used as a comparison. From this research, on main bus obtained that the current value of low-voltage generator is equal to 920 Ampere and at medium-voltage generator is equal to 73,7 Ampere, while for the power on main bus obtained by the low-voltage generator is equal to 707 kW and on the medium-voltage generator is equal to 739 kW. Based on short circuit analysis, a short-circuit current when sailing with low-voltage generators is equal to 35.9 kA while with medium-voltage generator is equal to 2.5 kA at the main bus. When maneuvering, at the main bus on the low-voltage generator produce short-circuit current of 35.9 and in the medium-voltage generator of 2.5 kA. The loading and unloading at the main bus on the low-voltage generator resulted in a short-circuit current value of 36 kA and in the medium-voltage generator of 2.5 kA.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSSP 623.850 3 Put k |
| Uncontrolled Keywords: | Generator Tegangan Menengah, Utility/Supply Vessel, Load Flow & Short Circuit Analysis |
| Subjects: | V Naval Science > VC Naval Maintenance > VC 270-279 Equipment of vessels, supplier,allowances,etc |
| Divisions: | Faculty of Marine Technology (MARTECH) > Marine Engineering > 36202-(S1) Undergraduate Thesis |
| Depositing User: | Denny Pramana Putra |
| Date Deposited: | 30 Jan 2018 03:38 |
| Last Modified: | 08 Mar 2019 06:31 |
| URI: | http://repository.its.ac.id/id/eprint/45549 |
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