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All Journal SITEKIN: Jurnal Sains, Teknologi dan Industri JAIM: Jurnal Aliansi Ilmu Multidisiplin
Winarta, Fadhel Putra
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Humanities Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Industrial & Manufacturing Engineering Social Sciences Other

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Optimal Coordination of Directional Overcurrent Relays Using a Modified Grey Wolf Optimization Algorithm Considering Multiple Characteristic Curves Eka Putra, R. Reski; Pujiantara, Margo; Harjian, Muhammad Rivaldi; Winarta, Fadhel Putra; Fahreza, Muhammad
SITEKIN: Jurnal Sains, Teknologi dan Industri Vol 22, No 1 (2024): December 2024
Publisher : Fakultas Sains dan Teknologi Universitas Islam Negeri Sultan Syarif Kasim Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24014/sitekin.v22i1.33737

Abstract

The effective coordination of directional overcurrent relays (DOCRs) is essential for maintaining the stability and dependability of power systems. This work presents a modified grey wolf optimization (MGWO) approach for addressing the DOCR coordination problem. The MGWO algorithm improves the original grey wolf optimization (GWO) by increasing convergence characteristics and balancing the exploration and exploitation stages. This equilibrium is attained by a dimension learning-hunting method and a quadratic reduction in the control parameter during the optimization phase. DOCR coordination is optimized using the MGWO method, using decision factors such as pickup current, time dial setting, and curve type. The goal is to reduce the total working time of primary relays while maintaining selectivity and shortening the discrimination time between primary and backup relays. The suggested MGWO technique is evaluated on the IEEE 8 bus system with two scenarios and compared to other optimization approaches. The results reveal that MGWO outperforms previous algorithms, achieving improvements in the objective function ranging from 5.52% to 58.19%. Additionally, the DOCR settings created by MGWO are evaluated using ETAP software to assure compliance with operational requirements and prevent violations of DOCR coordination.Keywords: Directional Overcurrent Relay Coordination, Grey Wolf Optimization, Multiple Curves, Pickup Current, Time Dial Setting.
ANALISIS POTENSI PEMASANGAN PLTS DI ROOFTOP SD-SMP SWASTA SABILINA Fahreza, Muhammad; Fadli, Muhammad Najmul; Winarta, Fadhel Putra; Nugroho, Satrio Dwi; Putri, Yani Kamisa; Sari, Dyah Ayu Kartika; Frasetyo, Mohd. Brado
JAIM: Jurnal Aliansi Ilmu Multidisiplin Vol. 1 No. 2 (2025): Juli 2025
Publisher : CV Sentra Nusa Connection

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63545/jaim.v1.i2.162

Abstract

Penggunaan Pembangkit Listrik Tenaga Surya (PLTS) merupakan salah satu pilihan untuk menghasilkan energi bersih. PLTS merupakan pilihan yang sangat baik bagi keberlangsungan lingkungan. Meskipun kita dapat menggunakan panel surya untuk mengubah energi matahari menjadi energi listrik, penggunaan yang paling banyak untuk saat ini adalah penggunaan PLTS rooftop. Namun, penggunaan PLTS perlu ditingkatkan, terutama karena kita sekarang bergantung pada listrik yang bersumber dari PLN. Oleh karena itu, perlu dianalisa penggantian sumber energi listrik menggunakan PLTS rooftop di sistem SD-SMP Swasta Sabilina, yang saat ini masih menggunakan sumber listrik dari PLN dan generator. Berdasarkan analisis yang dilakukan, SD-SMP Swasta Sabilina memiliki potensi menggunakan PLTS 500 wattpeak sebanyak 728 panel surya dimana PLTS tersebut disusun secara seri dan parelel yang terdapat 28 array serta membutuhkan SCC 380 A dan inverter 16 kW, serta 396 unit baterai berkapasitas 12 V 400 Ah dengan sistem PLTS off-grid
Co-Authors Eka Putra, R. Reski Fadli, Muhammad Najmul Fahreza, Muhammad Frasetyo, Mohd. Brado Harjian, Muhammad Rivaldi Margo Pujiantara Putri, Yani Kamisa Sari, Dyah Ayu Kartika Satrio Dwi Nugroho