Gaol, Hans Hanggara Lumban (2025) Optimasi Setting dan Koordinasi Proteksi Overcurrent Relay pada Feeder Pelanggan Prioritas PT. PLN ULP Gondang Wetan Menggunakan Modified Firefly Algorithm. Masters thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Keandalan dan kontinuitas pasokan listrik merupakan faktor penting dalam sistem tenaga listrik, terutama untuk pelanggan prioritas seperti rumah sakit dan industri yang sangat bergantung pada suplai listrik secara stabil tanpa mengalami gangguan. Untuk menjaga hal tersebut diperlukan sistem proteksi yang andal, salah satunya adalah relai proteksi arus lebih (Overcurrent Relay / OCR) yang berfungsi untuk mendeteksi dan memutus aliran listrik saat terjadi arus lebih akibat gangguan. Koordinasi proteksi yang tidak optimal dapat menyebabkan gangguan yang lebih luas khususnya ketika pelanggan prioritas mengalami gangguan arus lebih. Dalam kondisi akutal, koordinasi waktu relai pada sisi PLN terlalu singkat sehingga tidak memberikan kesempatan kepada pelanggan prioritas untuk melakukan koordinasi proteksi secara mandiri. Hal ini akan menyebabkan sisi PLN akan ikut terdampak apabila terjadi gangguan pada feeder pelanggan prioritas
Pada penelitian ini akan dilakukan optimasi dengan metode MFA (Modified firefly algorithm) yang dimodifikasi menggunakan program simulasi MATLAB dan diuji menggunakan program ETAP. Penelitian ini diharapkan dapat digunakan untuk mengatu ulang pengaturan waktu dan meningkatkan koordinasi relai proteksi arus lebih sehingga mampu meningkatkan respons proteksi sehingga gangguan pada pelanggan prioritas tidak memengaruhi sisi PLN secara keseluruhan. Implementasi dari hasil penelitian ini diharapkan dapat meningkatkan keandalan sistem distribusi listrik di PT. PLN ULP Gondang Wetan.
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The reliability and continuity of electrical power supply are critical aspects of power systems, particularly for priority customers such as hospitals and industrial facilities that require a stable and uninterrupted supply. To ensure these requirements are met, an effective and well-coordinated protection system is essential. One of the key components in such systems is the Overcurrent Relay (OCR), which functions to detect and isolate electrical faults caused by overcurrent conditions. Improper coordination of protective relay may lead to unnecessary outages and wider system disturbances, especially overcurrent faults occurs on the priority customers side. In the existing protection scheme, the relay coordination time on the utility which is PLN side is configured too short, preventing adequate coordination time for downstream (costumer-side) relays. This coordination results in the utility side relay tripping before customer side relay can respond, thereby compromising system selectivity and reliability.
This research proposes the optimization of overcurrent relay settings using the Modified Firefly Algorithm (MFA), which is implemented through MATLAB Simulations and validated using ETAP Software. The research is expected to enable the reconfiguration of relay time settings and improve the coordination of overcurrent relays, thereby enhancing protection response and ensuring that disturbances at priority customers do not affect the PLN system as a whole. The Implementation of this research is expected to increase the reliability of the power distribution system at PT. PLN ULP Gondang Wetan.
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | Optimasi, Optimization, Protection Coordination, Koordinasi Proteksi, Overcurrent Relay, Modified Firefly Algorithm, Protection Coordination |
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK2861 Electric relays. Protective relays--Security measures. |
| Divisions: | Faculty of Intelligent Electrical and Informatics Technology (ELECTICS) > Electrical Engineering > 20101-(S2) Master Thesis |
| Depositing User: | Hans Hanggara Lumban Gaol |
| Date Deposited: | 25 Jul 2025 05:08 |
| Last Modified: | 25 Jul 2025 05:08 |
| URI: | http://repository.its.ac.id/id/eprint/121470 |
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