Optimizing the Coordination of Overcurrent Relay with Time Current Curve Selection for Radial-Industrial System Using Firefly Algorithm

Chhun, Punleu (2020) Optimizing the Coordination of Overcurrent Relay with Time Current Curve Selection for Radial-Industrial System Using Firefly Algorithm. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Overcurrent relay (OCR) is the primary protection in the industrial distribution system. The advantages of OCR in the protection system is the ability to work coordinately in time, current, time-current grading. To attain the coordination setting of OCRs, it requires a proper minimum operating time (TOP) and satisfied coordination time interval (CTI). However, attaining the coordination of OCR is quite challenging when distributed generations (DGs) are presented in the power system. The presence of DGs gives additional fault current contribution to the fault location. In this thesis research, Firefly Algorithm (FA) is proposed to solve the coordination of OCR. The FA will be used to obtain time dial setting (TDS) with an objective to minimize the TOP and constraint of satisfying CTI for all possible network topologies and DGs operation. The proposed method is tested in a radial distribution system of Tanjung Harapan, a composite network of PT. Pupuk Kalimantan Timur industrial petrochemical plant, with two different study cases. For study case 1, the FA is applied for the radial distribution system of Tanjung Harapan without connection of DG. For study case 2, the FA is applied for the radial distribution system of Tanjung Harapan with connection of DG. The result of FA optimization for each study case is compared in different curve characteristics according to the IEC Standard 60255 in order to select the best curve with smallest overall operating time for protection coordination of OCRs in Tanjung Harapan electrical system. ==================================================================================================== Overcurrent relay (OCR) adalah perlindungan utama dalam sistem distribusi industri. Kelebihan OCR dalam sistem perlindungan adalah kemampuan untuk bekerja secara terkoordinasi dalam waktu, saat ini, penilaian waktu-saat ini. Untuk mencapai pengaturan koordinasi OCR, diperlukan operating time (TOP) minimum yang tepat dan coordination time interval (CTI) puas. Namun, mencapai koordinasi OCR cukup menantang ketika distributed generation (DG) disajikan dalam sistem tenaga. Kehadiran DG memberikan kontribusi arus gangguan tambahan ke lokasi gangguan. Dalam penelitian tesis ini, firefly algorithm (FA) diusulkan untuk menyelesaikan koordinasi OCR. FA akan digunakan untuk mendapatkan time dial setting (TDS) dengan tujuan untuk meminimalkan TOP dan kendala memuaskan CTI untuk semua topologi jaringan yang mungkin dan operasi DG. Metode yang diusulkan diuji dalam sistem distribusi radial Tanjung Harapan, jaringan komposit PT. Pabrik petrokimia industri Pupuk Kalimantan Timur, dengan dua studi berbeda. Untuk studi kasus 1, FA diterapkan untuk sistem distribusi radial Tanjung Harapan tanpa koneksi dari DG. Untuk studi kasus 2, FA diterapkan untuk sistem distribusi radial Tanjung Harapan dengan koneksi DG. Hasil optimasi FA untuk setiap studi kasus dibandingkan dalam karakteristik kurva yang berbeda sesuai dengan Standar IEC 60255 untuk memilih kurva terbaik dengan overall operating time terkecil untuk koordinasi perlindungan OCR di sistem kelistrikan Tanjung Harapan.

Item Type: Thesis (Masters)
Additional Information: RTE 621.317 Chh o-1 • Chhun, Punleu
Uncontrolled Keywords: overcurrent relay (OCR), firefly algorithm (FA), distributed generation (DG), radial distribution system, optimal protection coordination
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK3030 Electric power distribution systems
Divisions: Faculty of Intelligent Electrical and Informatics Technology (ELECTICS) > Electrical Engineering > 20101-(S2) Master Thesis
Depositing User: Punleu Chhun
Date Deposited: 31 Aug 2020 06:36
Last Modified: 19 Nov 2020 01:08
URI: https://repository.its.ac.id/id/eprint/76503

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