Sanjaya, Sofwat (2026) Perancangan Model Sistem Pengambilan Keputusan Prioritas Pemeliharaan Berbasis Multi-Kriteria Untuk Ketahanan Operasional Sistem Kelistrikan Terisolasi Di Bali. Masters thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Sistem kelistrikan Pulau Bali merupakan sistem terisolasi dengan cadangan daya terbatas sehingga sangat sensitif terhadap gangguan maupun penghentian operasi pembangkit dalam rangka pemeliharaan terencana. Dalam kondisi ini, keputusan outage maintenance tidak dapat hanya mengandalkan pendekatan Time-Based Maintenance (TBM). Penentuan prioritas pemeliharaan menghadapi konflik antar-kriteria, karena unit dengan interval pemeliharaan terlama belum tentu memiliki kondisi aset terburuk, risiko keselamatan tertinggi, atau dampak operasi terbesar. Sebaliknya, unit yang paling membutuhkan pemeliharaan belum tentu dapat segera dihentikan akibat keterbatasan suku cadang, tenaga kerja, dan peralatan. Penelitian ini bertujuan mengembangkan sistem pengambilan keputusan prioritas Outage Maintenance yang objektif dan adaptif pada PLTDG Pesanggaran Unit 1-12. Metode yang digunakan adalah integrasi metode Delphi, Analytic Hierarchy Process (AHP) dan Technique for Order Preference by Similarity to Ideal Solution (TOPSIS). Metode Delphi digunakan untuk melakukan penyaringan dan validasi terhadap 17 kandidat kriteria dengan mempertimbangkan tingkat kepentingan, keterukuran, kemampuan membedakan alternatif, serta potensi tumpang tindih antarkriteria. AHP digunakan untuk menentukan bobot kriteria berdasarkan penilaian sepuluh ahli melalui perbandingan berpasangan, sedangkan TOPSIS digunakan untuk memeringkat alternatif berdasarkan kedekatannya dengan solusi ideal. Kriteria yang digunakan meliputi keselamatan, lingkungan, produksi dan operasi, kondisi aset, interval pemeliharaan, tren degradasi, serta ketersediaan sumber daya, mengacu pada ISO 14224. Hasil menunjukkan bahwa Failure Consequences menjadi faktor dominan dengan Safety sebagai subkriteria utama. PLTDG 10 menjadi prioritas tertinggi, diikuti PLTDG 2 dan PLTDG 1. Model ini terbukti stabil dan mampu menghasilkan keputusan yang lebih transparan, terukur, dan sesuai dengan keterbatasan sistem kelistrikan terisolasi
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The Bali power system is an isolated electrical system with limited reserve capacity, making it highly sensitive to disturbances and generating-unit shutdowns for planned maintenance. Under these conditions, outage maintenance decisions cannot rely solely on a Time-Based Maintenance (TBM) approach. Maintenance prioritization involves conflicting criteria, as the unit with the most overdue maintenance interval does not necessarily have the poorest asset condition, the highest safety risk, or the greatest operational impact. Conversely, the unit with the most urgent maintenance requirement may not be immediately taken out of service because of limitations in spare-part availability, workforce readiness, and supporting equipment. This study aims to develop an objective and adaptive decision support system for prioritizing outage maintenance among Pesanggaran PLTDG Units 1–12. The proposed approach integrates the Delphi method, the Analytic Hierarchy Process (AHP), and the Technique for Order Preference by Similarity to Ideal Solution (TOPSIS). The Delphi method is employed to screen and validate 17 candidate criteria by considering their importance, measurability, ability to differentiate among alternatives, and potential conceptual overlap. Subsequently, AHP is used to determine criterion weights based on pairwise comparisons provided by ten experts, while TOPSIS is applied to rank the alternatives according to their relative proximity to the ideal solution. The assessment criteria comprise safety, environmental impact, production and operational impact, asset condition, maintenance interval, degradation trend, and resource availability, with reference to ISO 14224. The results indicate that Failure Consequences constitute the dominant criterion group, with Safety identified as the most influential subcriterion. PLTDG Unit 10 is ranked as the highest outage maintenance priority, followed by PLTDG Units 2 and 1. The proposed model demonstrates relative stability under the evaluated scenarios and provides a more transparent, measurable, and context-sensitive decision-making mechanism for maintenance prioritization in an isolated power system.
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | Outage Management, Multi-Criteria Decision Making (MCDM), Delphi, AHP, TOPSIS, PLTDG, Sistem Terisolasi, Asset Management |
| Subjects: | T Technology > TS Manufactures > TS176 Manufacturing engineering. Process engineering (Including manufacturing planning, production planning) |
| Divisions: | Faculty of Industrial Technology and Systems Engineering (INDSYS) > Industrial Engineering > 26101-(S2) Master Thesis |
| Depositing User: | Sofwat Sanjaya |
| Date Deposited: | 02 Jul 2026 08:48 |
| Last Modified: | 02 Jul 2026 08:48 |
| URI: | http://repository.its.ac.id/id/eprint/134224 |
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