Wibisono, Rahmat Rifqi (2025) Koordinasi Directional Overcurrent Relay (DOCR) Menggunakan Adaptive Modified Firefly Algorithm Pada Sistem Ring Kelistrikan PT. Linde Indonesia Gresik. Masters thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Koordinasi proteksi mempunyai daya dukung aktif pada sebuah sistem tenaga listrik untuk keandalan sistem, mengenali adanya kondisi tidak normal, serta sifat selektif untuk mengisolasi gangguan agar tidak meluas sehingga mengamankan peralatan lainnya. Penggunaan Directional Overcurrent Relay (DOCR) dikarenakan mempunyai karakteristik respon cepat, pengaturan koordinasi proteksi yang fleksibel menyesuaikan arah arus gangguan, dan optimalisasi antara rele utama dan cadangan menghindari kegagalan proteksi. Metode optimasi Adaptive Modified Firefly Algorithm (AMFA) digunakan untuk memperoleh koordinasi optimal dari DOCR pada sistem distribusi ring. Parameter penentuan arus pickup (Ipickup), Time Dial Setting (TDS) untuk diselesaikan dengan metode AMFA. Skema proteksi dengan DOCR diusulkan bekerja dengan operasi dua arah yaitu, maju dan mundur untuk setiap kondisi gangguan dengan kurva Time Current Characteristic (TCC).Metode optimasi AMFA diterapkan pada jaringan sistem distribusi ring PT. Linde Indonesia Gresik dengan mempertimbangkan gangguan yang terjadi pada masing-masing bus. Metode AMFA mencapai koordinasi optimal dan koordinasi rele untuk dua studi kasus pada penelitian dengan nilai total Time Operating (TOP) minimum masing-masing 0,810 detik dan 0,809 detik dengan dasar memenuhi Coordination Time Interval (CTI) setiap pasangan rele tidak kurang dari 0,2 detik dengan jenis kurva IEC Extremely Inverse. Selanjutnya, perbandingan metode AMFA lebih cepat konvergensi (iterasi) dibandingkan metode Firefly Algorithm (FA)
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Protection coordination has an active support capacity in an electric power system for system reliability, recognizing abnormal conditions, and selective properties to isolate disturbances from spreading so as to secure other equipment. The use of Directional Overcurrent Relay (DOCR) is because it has fast response characteristics, flexible protection coordination settings to adjust the direction of the disturbance current, and optimization between the main and backup relays to avoid protection failure. The Adaptive Modified Firefly Algorithm (AMFA) optimization method is used to obtain optimal coordination of DOCR in the ring distribution system. The parameters for determining the pickup current (Ipickup), Time Dial Setting (TDS) to be solved by the AMFA method. The protection scheme with DOCR is proposed to work with two-way operations, namely, forward and backward for each disturbance condition with the Time Current Characteristic (TCC) curve. The AMFA optimization method is applied to the PT. Linde Indonesia Gresik ring distribution system network by considering the disturbances that occur on each bus. The AMFA method achieves optimal coordination and relay coordination for two case studies in the research with a minimum total Time Operating (TOP) value of 0.810 seconds and 0.809 seconds respectively on the basis of meeting the Coordination Time Interval (CTI) of each relay pair of not less than 0.2 seconds with the type of IEC Extremely Inverse curve. Furthermore, the comparison of the AMFA method is faster in convergence (iteration) compared to the Firefly Algorithm (FA) method
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | adaptive modified firefly algorithm, directional overcurrent relay, koordinasi proteksi, sistem ring |
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK1322.6 Electric power-plants T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK152.A75 Electrical engineering--Safety measures 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: | Rahmat Rifqi Wibisono |
| Date Deposited: | 20 Jan 2025 07:58 |
| Last Modified: | 20 Jan 2025 07:58 |
| URI: | http://repository.its.ac.id/id/eprint/116454 |
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