Perancangan Struktur Jacket Penopang Turbin Angin Lepas Pantai Untuk Perairan Indonesia Menggunakan Pendekatan Coupled Analysis

Priasta, Shofiyah Iklil (2025) Perancangan Struktur Jacket Penopang Turbin Angin Lepas Pantai Untuk Perairan Indonesia Menggunakan Pendekatan Coupled Analysis. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Peningkatan kebutuhan energi terbarukan di Indonesia mendorong pengembangan teknologi turbin angin lepas pantai yang memerlukan perencanaan struktur fondasi yang andal dan adaptif terhadap kondisi lingkungan laut. Penelitian ini bertujuan untuk menentukan lokasi potensial turbin angin lepas pantai serta merancang struktur fondasi jenis jacket yang sesuai untuk turbin angin tipe NREL 5 MW. Penilaian lokasi dilakukan dengan metode TOPSIS yang didahului oleh pembobotan kriteria menggunakan Shannon Entropy, berdasarkan parameter lingkungan seperti kecepatan angin, kedalaman perairan, tinggi gelombang, arus laut, dan akses infrastruktur. Tiga wilayah diuji, yaitu Sulawesi, Maluku, dan Papua, dengan hasil akhir menunjukkan Papua sebagai lokasi paling layak. Simulasi gaya dan momen pada turbin dilakukan menggunakan software OpenFAST dengan pendekatan pemodelan coupled melalui modul AeroDyn, HydroDyn, ElastoDyn, SubDyn, dan InflowWind. Hasil validasi model terhadap data standar NREL menunjukkan tingkat kesalahan kurang dari 5%, sehingga model dapat digunakan dalam analisis lebih lanjut. Hasil simulasi menunjukkan bahwa gaya dan momen meningkat signifikan seiring bertambahnya kedalaman laut, dengan gaya maksimum lebih dari 1.400 kN dan momen lebih dari 170.000 kNm pada kedalaman 100 meter. Evaluasi struktural melalui analisis in-place mengungkapkan bahwa terdapat joint dengan nilai unity check (UC) >1 pada kondisi ekstrem, khususnya pada perairan dalam, yang mengindikasikan perlunya perkuatan atau penyesuaian perancangan. Penelitian ini memberikan landasan teknis penting untuk perencanaan struktur turbin angin lepas pantai di Indonesia dan mendukung pengembangan energi angin sebagai bagian dari transisi energi nasional.
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The growing need for renewable energy in Indonesia is encouraging the development of offshore wind turbine technology, which requires strong and flexible foundation structures that can adapt to ocean conditions. This study aims to find the best locations for offshore wind turbines and to design a jacket-type foundation suitable for the NREL 5 MW wind turbine. The site selection was done using the TOPSIS method, with criteria weights calculated using the Shannon Entropy method. Environmental factors such as wind speed, water depth, wave height, ocean currents, and access to infrastructure were considered. Three areas were studied: Sulawesi, Maluku, and Papua. The results showed that Papua is the most suitable location. Wind and wave loads on the turbine were simulated using OpenFAST software with a coupled modeling approach that includes AeroDyn, HydroDyn, ElastoDyn, SubDyn, and InflowWind modules. The model was validated against NREL standard data and showed less than 5% error, meaning it is reliable for further analysis. The simulations showed that forces and moments increase significantly with deeper water, reaching more than 1,400 kN of force and 170,000 kNm of moment at a depth of 100 meters. Structural analysis using in-place checks showed some joints had a unity check (UC) value greater than 1 under extreme conditions, especially in deep water, meaning those parts may need strengthening or redesign. This research provides important technical input for planning offshore wind turbine structures in Indonesia and supports the development of wind energy as part of the country’s energy transition.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Coupled Analysis, Struktur Jacket, OpenFAST, Analisis In-Place, Turbin Angin Lepas Pantai
Subjects:	V Naval Science > V Naval Science (General)
Divisions:	Faculty of Marine Technology (MARTECH) > Ocean Engineering > 38201-(S1) Undergraduate Thesis
Depositing User:	Shofiyah Iklil Priasta
Date Deposited:	25 Jul 2025 04:25
Last Modified:	25 Jul 2025 04:25
URI:	http://repository.its.ac.id/id/eprint/121639

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