Koordinasi Relay Proteksi OCR pada Sistem Distribusi Industri yang Terintegrasi Photovoltaic System dengan Linear Programming

Fitri, Evelyna Gusty (2026) Koordinasi Relay Proteksi OCR pada Sistem Distribusi Industri yang Terintegrasi Photovoltaic System dengan Linear Programming. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Sistem distribusi listrik pada industri manufaktur semakin kompleks seiring dengan integrasi Photovoltaic System (PV System) sebagai sumber Distributed Generation (DG). Kehadiran PV System menyebabkan perubahan arah aliran daya dari satu arah menjadi dua arah (bidirectional), sehingga memengaruhi koordinasi Overcurrent Relay (OCR) yang sebelumnya dirancang untuk sistem distribusi konvensional. Perubahan tersebut berpotensi menimbulkan gangguan koordinasi berupa overtripping dan undertripping, yang dapat menurunkan keandalan, selektivitas, dan sensitivitas sistem proteksi. Penelitian ini bertujuan mengoptimalkan koordinasi relay proteksi OCR pada sistem distribusi industri yang terintegrasi PV System menggunakan metode Linear Programming (LP). Studi kasus dilakukan pada proyek Grease Manufacturing Plant (GMP) di Marunda, Bekasi, yang dikerjakan oleh PT Siemens Indonesia. Pemodelan sistem dilakukan menggunakan perangkat lunak ETAP 20.6.0, sedangkan optimasi difokuskan pada penentuan nilai Time Multiplier Setting (TMS) dan arus pickup. Hasil penelitian menunjukkan bahwa metode Linear Programming mampu menghasilkan koordinasi relay yang memenuhi standar Coordination Time Interval (CTI) sebesar 0,2–0,4 detik pada setiap pasangan relay primer dan cadangan. Selain itu, kurva karakteristik waktu–arus (Time Current Characteristic/TCC) antarrelay tidak saling berpotongan, sehingga koordinasi relay dinyatakan selektif dan bekerja sesuai urutan proteksi yang diharapkan.
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Electrical distribution systems in manufacturing industries have become increasingly complex with the integration of Photovoltaic (PV) Systems as a source of Distributed Generation (DG). The integration of PV systems changes the power flow from unidirectional to bidirectional, which affects the coordination of Overcurrent Relay (OCR) protection systems originally designed for conventional distribution networks. This change may lead to coordination problems, including overtripping and undertripping, thereby reducing the reliability, selectivity, and sensitivity of the protection system. This study aims to optimize OCR protection relay coordination in an industrial distribution system integrated with a PV system using the Linear Programming (LP) method. The case study was conducted on the Grease Manufacturing Plant (GMP) project in Marunda, Bekasi, developed by PT Siemens Indonesia. The electrical distribution system was modeled using ETAP 20.6.0, while the optimization process focused on determining the optimal Time Multiplier Setting (TMS) and pickup current values. The simulation results demonstrate that the proposed LP-based approach successfully achieves relay coordination by ensuring that the Time-Current Characteristic (TCC) curves do not intersect and that the Coordination Time Interval (CTI) for all primary and backup relay pairs remains within the recommended range of 0.2–0.4 seconds. These results indicate that the proposed method improves the selectivity and reliability of the protection system while maintaining proper relay coordination in an industrial distribution network integrated with a PV system.

Item Type: Thesis (Other)
Uncontrolled Keywords: Distributed Generation, Linear Programming, Overcurrent Relay, Photovoltaic System, Proteksi Koordinasi. Coordination Protection, Distributed Generation, Linear Programming, Overcurrent Relay, Photovoltaic System.
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK2861 Electric relays. Protective relays--Security measures.
T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK3030 Electric power distribution systems
Divisions: Faculty of Vocational > 36304-Automation Electronic Engineering
Depositing User: Evelyna Gusty Fitri
Date Deposited: 10 Aug 2026 02:11
Last Modified: 10 Aug 2026 02:11
URI: http://repository.its.ac.id/id/eprint/144261

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