Merta, I Nengah Sri Dana (2026) Optimalisasi Konfigurasi Sistem Tenaga Listrik Pada Dua Subsistem WPO Banten Dengan Penambahan IBT-4 Cilegon Menggunakan Metode Multi-Criteria Decision Making (MCDM). Masters thesis, Institut Teknologi Sepuluh November.
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Abstract
Pertumbuhan beban listrik industri di wilayah Banten memicu tantangan signifikan terhadap stabilitas dan keandalan operasi Subsistem Suralaya dan Cilegon. Integrasi Interbus Transformer (IBT-4 Cilegon) berkapasitas 500 MVA diimplementasikan untuk mengoptimalkan konfigurasi jaringan melalui keseimbangan tiga pilar operasi: keandalan, mutu, dan keekonomian. Penelitian ini bertujuan menentukan konfigurasi optimal dari empat alternatif skenario pasca-integrasi IBT-4. Metodologi penelitian melibatkan simulasi kriteria teknis menggunakan DIgSILENT PowerFactory untuk mengevaluasi parameter keamanan jaringan (Kontingensi N-1) dan Short-Circuit Level (SCL), serta simulasi kriteria ekonomis menggunakan jROS. Evaluasi multi-kriteria dilakukan secara hibrida menggunakan Analytical Hierarchy Process (AHP) untuk pembobotan kriteria dan TOPSIS untuk perangkingan alternatif konfigurasi. Hasil simulasi menunjukkan integrasi IBT-4 efektif meredistribusi pembebanan termal normal di bawah 66%. Pada kondisi kontingensi N-1, pembebanan maksimum IBT di subsistem Cilegon turun drastis dari 97% menjadi 61% dengan profil tegangan yang terjaga sesuai standar Grid Code PLN untuk sistem 150 kV. Konfigurasi tertentu mampu mengoptimalkan biaya generasi melalui penonaktifan PLTGU Cilegon dengan arus N-1 IBT tetap berada di bawah batasan rele Overload Shedding (OLS) 1.875 A. Namun, Konfigurasi 3 (C.3) melanggar batas fisis keamanan karena menghasilkan SCL sebesar 54,42 kA, melebihi kapasitas breaking rating pemutus daya eksisting (50 kA). Berdasarkan integrasi kriteria tersebut, metode AHP-TOPSIS menetapkan Konfigurasi 4 (C.4) sebagai peringkat pertama dengan nilai preferensi tertinggi 0,811 yang optimal menyeimbangkan keandalan, mitigasi arus gangguan, serta efisiensi economic dispatch. Penelitian ini membuktikan bahwa integrasi IBT-4 Cilegon memberikan manfaat multi-dimensional yang kokoh bagi operasional sistem kelistrikan Banten.
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The growth of industrial electrical load in the Banten region poses significant challenges to the operational stability and reliability of the Suralaya and Cilegon subsystems. The integration of a 500 MVA Inter-bus Transformer (IBT-4 Cilegon) is implemented to optimize network configuration by balancing three operational pillars: reliability, quality, and economy. This study aims to determine the optimal configuration among four alternative scenarios post-IBT-4 integration. The methodology involves technical criteria simulation using DIgSILENT PowerFactory to evaluate network security parameters (N-1 contingency) and Short-Circuit Level (SCL), alongside economic criteria simulation using jROS. Multi-criteria evaluation is conducted hybrid using the Analytical Hierarchy Process (AHP) for criteria weighting and TOPSIS for configuration alternative ranking. Simulation results indicate that IBT-4 integration effectively redistributes normal thermal loading below 66%. Under N-1 contingency conditions, the maximum IBT loading in the Cilegon subsystem drops drastically from 97% to 61% with a voltage profile maintained within the PLN Grid Code standard for the 150 kV system. Certain configurations optimize generation costs by enabling the shutdown of the Cilegon CCGT while keeping the IBT N-1 current below the Overload Shedding (OLS) relay setting of 1,875 A. However, Configuration 3 (C.3) violates physical safety limits by generating an SCL of 54.42 kA, exceeding the existing circuit breaker breaking rating of 50 kA. Based on criteria integration, the AHP-TOPSIS method establishes Configuration 4 (C.4) as the first rank with the highest preference value of 0.811, which optimally balances reliability, fault current mitigation, and economic dispatch efficiency. This study proves that the integration of IBT-4 Cilegon provides robust multi-dimensional benefits for the Banten power system operation.
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | Analisa Arus Hubung Singkat, Analisa Ekonomis, Analisa Kontingensi N-1, Inter-Bus Transformer (IBT), Konfigurasi Sistem Tenaga, Multi-Criteria Decision Making, Economic Analysis, Inter-Bus Transformer (IBT), Power System Configuration, N-1 Contingency Analysis, Multi-Criteria Decision Making, Short Circuit Analysis |
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK201 Electric Power Transmission |
| Divisions: | Faculty of Intelligent Electrical and Informatics Technology (ELECTICS) > Electrical Engineering > 20101-(S2) Master Thesis |
| Depositing User: | I Nengah Sri Dana Merta |
| Date Deposited: | 30 Jul 2026 09:14 |
| Last Modified: | 30 Jul 2026 09:14 |
| URI: | http://repository.its.ac.id/id/eprint/140097 |
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