Betani, Carolina (2019) Studi Kapasitas Turbin Angin dan Karakteristik Dinamis Turbin Angin Lepas Pantai Terapung dengan floater ITI Energy Barge di Perairan Kepulauan Mentawai. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Kekurangan listrik di Kabupaten Kepulauan Mentawai dapat dipenuhi dengan energi alternatif, salah satu energi alternatif adalah energi angin dengan pembangkit listrik menggunakan turbin angin. Turbin angin pada laut lepas lebih unggul dibanding pada daratan. Kapasitas turbin angin lepas pantai lebih besar, namun diperlukan analisis mengenai karakteristik dinamis struktur terutama untuk struktur terapung. Penelitian ini membahas mengenai konsep turbin angin yang dapat diterapkan untuk memenuhi kekurangan listrik Kabupaten Kepulauan Mentawai saat ini dengan struktur terapung yang digunakan adalah ITI Energy Barge. Analisis karakteristik dinamis dilakukan dengan bantuan software open source FAST v.8.
Konsep turbin angin yang dapat digunakan untuk memenuhi kekurangan listrik di Kabupaten Kepulauan Mentawai adalah dibangunnya 11 turbin jenis XEMC Darwind 128 5MW dengan CF 0,22 untuk memenuhi kekurangan energi sebesar 97,543 GWh/y. Turbin diletakkan di bagian barat Sipora Utara dengan jarak 4,96 km dari pantai ke laut lepas dengan kedalaman perairan minimal 70 m. Struktur ITI Energy Barge yang diguanakn dicari karakteristik dinamisnya dan
didapatkan analisis karakteristik dinamis di perairan Kepulauan Mentawai adalah grafik spektra antara kondisi operasi dan parking cenderung memiliki bentuk yang sama dan puncak pada frekuensi yang berdekatan. Pada kondisi operasi gerak surge, heave, roll, pitch cenderung memiliki nilai lebih besar sedangkan pada kondisi parking nilai sway dan yang cenderung lebih besar. Amplitude signifikan ITI Energy Barge saat operasi gerak surge sebesar 1,37m, sway sebesar 1,29m, heave adalah 1,25m, roll adalah 8,62deg, pitch adalah 8,76deg, dan yaw saat operasi adalah 7,98deg. Gerak rotasional memiliki nilai nilai yang cukup besar, sehingga struktur tidak disarankan untuk ditempatkan di lingkungan yang lebih ganas. Tali tambat dengan tension paling besar pada Line 4 dengan nilai 1815 kN dan didapatkan minimum breaking load sebesar 3031 kN.
===============================================================The lack of electricity in several regions in Indonesia, one of which is the Mentawai Islands Regency, can be overcome by alternative energy that is sustainable, renewable and carbon free. One alternative energy is wind energy using wind turbines. Offshore wind turbines have more benefits than land, for selection of turbine capacities to adjust needs and other factors and for development analysis of dynamic characteristics of structures, especially floating structures, is needed. This study discusses the electricity needs and the selection of wind turbines that can be applied to meet the current electricity shortages of the Mentawai Islands Regency with the floating structure used is ITI Energy Barge. Dynamic characteristic analysis is done with the help of open source FAST v.8 software.
The results of the concept is XEMC Darwind XD 128 by Cf of 0.22 and the number of turbines 11 pieces can meet the needs of electricity in the Mentawai Islands Regency amounted to 97.543 GWh/y. The turbine placed in the western of Sipora Utara at 4.96 km distance from the beach to the open sea with a water depth of 70 m. While the results of the analysis of the dynamic characteristics of ITI Energy Barge in the Mentawai Island’s sea are that the spectral density graph between operating and parking conditions are likely to have the same shape and peak at adjacent frequencies. In the operating conditions of the motion of surge, heave, roll, pitch tend to have a greater value while the parking conditions of sway and yaw values tend to be larger. The significant amplitude of ITI Energy Barge surge at operation is 1.37m, sway is 1.29m, heave is 1.25m, roll is 8.62deg, pitch is 8.76deg, and yaw at operation is 7.98deg. Rotational motion has quite large values, this structure can be used in the Mentawai Islands but for other sea that are more rough environment this structure is not recommended. Mooring lines with the greatest tension on the Line 4 with a value of 1815 kN and obtained a minimum breaking load of 3031 kN.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Uncontrolled Keywords: | Kekurangan Listrik, Kepulauan Mentawai, Konsep Turbin Angin, Turbin Angin Lepas Pantai, ITI Energy Barge, FAST v.8, Karakteristik Dinamis |
| Subjects: | T Technology > TC Hydraulic engineering. Ocean engineering T Technology > TJ Mechanical engineering and machinery > TJ828 Wind turbines |
| Divisions: | Faculty of Marine Technology (MARTECH) > Ocean Engineering > 38201-(S1) Undergraduate Thesis |
| Depositing User: | Betani Carolina |
| Date Deposited: | 21 May 2026 03:59 |
| Last Modified: | 21 May 2026 03:59 |
| URI: | http://repository.its.ac.id/id/eprint/69437 |
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