Adaptive Protection Scheme For Optimal Relay Coordination In Tboung Khmum Radial Distribution System Using Adaptive Modified Firefly Algorithm

So, Phanit (2025) Adaptive Protection Scheme For Optimal Relay Coordination In Tboung Khmum Radial Distribution System Using Adaptive Modified Firefly Algorithm. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Relay coordination plays an essential role in power system protection, ensuring the safety and reliability of the operation of the electrical network. In the presence of distribution generators (DGs), directional overcurrent relays (DOCRs) are used to ensure the reliability and speed of relay operation and avoid malfunction in the primary relay and the backup during the contributed current injected from DGs when the fault occurs in the system. This paper presents an adaptive scheme for optimizing the DOCRs coordination in the radial distribution system with multiple DGs. An adaptive protection scheme is applied to determine the optimal protection coordination for different system configurations. An adaptive modified firefly algorithm (AMFA) is proposed to find the DOCR coordination in the distribution system by determining the optimal values of the plug setting (PS) and the time multiplier setting (TMS). In this study, the Tboung Khmum radial distribution system in Cambodia, with two DGs connected at the end of each line, is used as the case study. The proposed AMFA is tested under four different cases and compared with the conventional method. The results illustrate that AMFA can reduce the total operating time of DOCR coordination.
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Koordinasi relai berperan penting dalam proteksi sistem tenaga listrik, memastikan keamanan dan keandalan pengoperasian jaringan listrik. Pada distribution generators (DGs), directional overcurrent relays (DOCR) digunakan untuk memastikan keandalan dan kecepatan operasi relai serta menghindari malafungsi pada relai primer dan cadangan selama arus yang disumbangkan dari DGs saat gangguan terjadi pada sistem. Tesis ini menyajikan skema adaptif untuk mengoptimalkan koordinasi DOCR dalam sistem distribusi radial dengan beberapa DG. Skema proteksi adaptif diterapkan untuk menentukan koordinasi proteksi yang optimal untuk konfigurasi sistem yang berbeda. Metode adaptive modified firefly algorithm (AMFA) diusulkan untuk mencari koordinasi DOCR dalam system distribusi dengan menentukan nilai optimal plug setting (PS) dan time multiplier setting (TMS). Dalam studi ini, metode tersebut diverifikasi dengan simulasi pada sistem distribusi radial Tboung Khmum di Kamboja, dengan dua DG yang terhubung di ujung setiap saluran. AMFA yang diusulkan diuji dalam empat kasusberbeda dan dibandingkan dengan metode konvensional. Hasil simulasi menunjukkan bahwa AMFA dapat mengurangi total waktu operasi koordinasi DOCR.

Item Type:	Thesis (Masters)
Uncontrolled Keywords:	Adaptive Protection Scheme, Adaptive Modified Firefly Algorithm, Directional Overcurrent Relay, Radial Distribution System
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:	Phanit So
Date Deposited:	21 Jul 2025 02:17
Last Modified:	21 Jul 2025 02:17
URI:	http://repository.its.ac.id/id/eprint/120165

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