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All Journal Jurnal Elkolind : Jurnal Elektronika dan Otomasi Industri JAREE (Journal on Advanced Research in Electrical Engineering)
Jaelani Putra, Riko Satrya Fajar
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Control & Systems Engineering Electrical & Electronics Engineering

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Optimization Protection Coordination by Optimizing Time Dial Settings at PT. Pupuk Sriwidjaja Palembang Using Grey Wolf Method Januarestu, Achmad Jawahir; Pujiantara, Margo; Priyadi, Ardyono; Jaelani Putra, Riko Satrya Fajar
JAREE (Journal on Advanced Research in Electrical Engineering) Vol 9, No 1 (2025): January
Publisher : Department of Electrical Engineering ITS and FORTEI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/jaree.v9i1.430

Abstract

Overcurrent Rele (OCR) is an important component in the electric power protection system. One of the parameters that must be set on the OCR is the Pickup Current (Ip) and Time Dial Setting (TDS). To achieve optimum relay coordination by setting the time dial, several optimisation methods have been used such as Genetic Algorithm (GA), Particle Swarm Optimisation (PSO), Fire Fly Algorithm (FA) and Grasshopper Optimisation Algorithm (GOA).In this study, the TDS setting was determined through Using the Grey Wolf Optimisation (GWO) method. The GWO algorithm was able to determine the optimum value of the TDS setting for each OCR process. This is validated by the results of tests conducted using the ETAP application. The primary and secondary relays are able to coordinate effectively to secure three-phase faults that occur on each bus.Furthermore, GWO demonstrated a superior convergence rate in compared to GOA, therefore enhancing its capacity to identify a more optimal TDS setting value. Furthermore, the objective function of GWO is more effective than that of GOA, thereby enhancing its ability to function in a more optimal manner. The results of this test demonstrate that the GWO algorithm is a reliable method for directly identifying the optimal TDS setting value for determining relay coordination settings.Keywords—Protection Coordination Overcurrent Rele ( OCR ), Short Circuit Maximum ( IscMax ), Time Dial Setting ( TDS ), Grey Wolf Optimization ( GWO ).
Implementasi Estimasi Jarak Relatif Objek Berbasis ROS2 pada Robot Sepak Bola Menggunakan YOLO dan Kamera Omnidirectional 360° Saputra, Muhammad Jardin; Khumaidi, Agus; Jaelani Putra, Riko Satrya Fajar
Jurnal Elektronika dan Otomasi Industri Vol. 13 No. 1 (2026): Jurnal Elkolind Vol. 13, No. 1, 2026 (Mei 2026)
Publisher : Program Studi Teknik Elektronika Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/elkolind.v13i1.9813

Abstract

Penelitian ini bertujuan untuk mengimplementasikan sistem estimasi posisi relatif objek pada robot sepak bola menggunakan kamera omnidirectional 360° yang terintegrasi dengan metode deteksi objek YOLOv5 dan komunikasi berbasis ROS 2. Sistem dirancang untuk mendeteksi objek berupa bola dan robot secara real-time serta menghitung posisi relatif dalam bentuk koordinat (?,?) dalam satuan milimeter berdasarkan titik pusat kamera. Hasil pengujian menunjukkan bahwa sistem mampu mengestimasi posisi objek dengan tingkat akurasi yang baik. Rata-rata error yang diperoleh sebesar 2,83% untuk objek bola dan 8,25% untuk objek robot. Selain itu, faktor jarak dan pencahayaan mempengaruhi performa sistem, di mana peningkatan jarak menyebabkan kenaikan error, sedangkan peningkatan intensitas cahaya meningkatkan nilai confidence deteksi.Implementasi komunikasi menggunakan ROS 2 menunjukkan bahwa data posisi objek dapat dikirim dan diterima antar node secara real-time tanpa kehilangan data dan tanpa keterlambatan yang signifikan.Dengan demikian, sistem yang dikembangkan mampu mendukung proses navigasi robot sepak bola secara efektif dan real-time.
Co-Authors Agus Khumaidi Ardyono Priyadi Januarestu, Achmad Jawahir Margo Pujiantara Saputra, Muhammad Jardin