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All Journal International Journal of Electrical and Computer Engineering Mechatronics, Electrical Power, and Vehicular Technology Bulletin of Electrical Engineering and Informatics Jurnal Teknologi Jurnal EECCIS CYCLOTRON Jurnal Ilmiah Sutet Jurnal Rekayasa Hijau Jurnal Nasional Teknik Elektro dan Teknologi Informasi Journal of Engineering and Technological Sciences
Nanang Hariyanto
Institut Teknologi Bandung
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Materials Science & Nanotechnology Mechanical Engineering

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Optimization of Power System Stabilizer Parameters Using Genetic Algorithm Considering WECC Criteria Kevin Marojahan Banjar-Nahor; Rofi Maytsa Syahida; Nanang Hariyanto
CYCLOTRON Vol 9 No 01 (2026): CYCLOTRON
Publisher : Universitas Muhammadiyah Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30651/ct.v9i01.30230

Abstract

Makalah ini membahas optimasi parameter Power System Stabilizer (PSS) menggunakan Genetic Algorithm (GA) yang diimplementasikan pada MATLAB dan DIgSILENT PowerFactory, dengan tujuan meningkatkan stabilitas sistem terhadap osilasi frekuensi rendah akibat pertukaran energi kinetik antar generator. Fokus utama diberikan pada model PSS2B, yang merupakan stabilizer yang banyak digunakan, dengan penyetelan parameter ditujukan untuk memenuhi standar performa yang ditetapkan oleh Western Electricity Coordinating Council (WECC) dan Aturan Jaringan Listrik Indonesia. Optimasi difokuskan pada parameter-parameter penting, termasuk gain stabilizer, konstanta waktu washout, dan konstanta waktu pada blok Lead-Lag Compensator. Melalui analisis eigenvalue dan evaluasi respon frekuensi, proses optimasi menunjukkan bahwa pendekatan Genetic Algorithm menghasilkan parameter yang memenuhi persyaratan regulasi yang ketat. Efektivitas parameter hasil optimasi dievaluasi menggunakan berbagai indikator performa, seperti bode plot, lokasi nilai eigen, dan simulasi domain waktu. Hasil penelitian ini menegaskan kemampuan teknik Genetic Algorithm dalam meningkatkan kinerja PSS serta memastikan kepatuhan terhadap standar yang berlaku.
Mitigating Maloperations of Generator Protection in Oil and Gas Facilities: A Coordination Strategy for Overcurrent and Overcurrent Voltage Restrained Relays Alvin Harista Rahman; Kevin Marojahan Banjar-Nahor; Nanang Hariyanto
Journal of Engineering and Technological Sciences Vol. 58 No. 5 (2026): Vol. 58 No. 5(2026): October
Publisher : Directorate for Research and Innovation, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2026.58.5.9

Abstract

The oil and gas industry requires a highly reliable and adaptive electrical protection system to prevent maloperation and ensure operational continuity. Unlike conventional industrial systems, electrical configurations in oil and gas facilities often feature short electrical distances between generators and loads, with some connected directly and others through transformers. This condition increases the risk of miscoordination in overcurrent relays (50/51 and 50/51V), potentially leading to widespread blackouts that may disrupt production processes and cause significant financial losses. Such maloperations are often linked to improper relay settings. Inaccurate modelling of time–current characteristic (TCC) curves and misadjustment of 50/51V relays can result in non-selective tripping, where the 50/51V relay operates before the 50/51 relay as the primary protection. This study proposes relay coordination strategies for three representative power system configurations in the oil and gas sector, which are evaluated through relay coordination simulations using power system simulation software. The approach considers for the unique characteristics of the 50/51V relay and equipment damage curves, using power system simulation software for evaluation. The results demonstrate that the proposed scheme avoids maloperation by maintaining IEEE standard coordination margins (0.2–1 s), ensuring relay curves remain below electrical equipment damage thresholds, preserving selectivity and preventing relay coordination maloperations. These findings provide practical guidelines for engineers in designing selective and reliable protection systems, thereby reducing blackout risks and supporting continuous operation in oil and gas facilities.
Co-Authors Alvin Harista Rahman Boy Ihsan Deny Hamdani Dini, Hasna Satya Halim, Levin Jaka Sembiring Kevin Marojahan Banjar-Nahor Kevin Marojahan Banjar-Nahor Khomarudin, Riki Mohamad Ramdan Febriana Herawan Muhammad Ikhsan Muhammad Nurdin Musa Partahi Marbun Ngapuli Irmea Sinisuka Nur Iksan Rofi Maytsa Syahida Ryandi Ryandi Suhono Harso Supangkat