DESAIN SISTEM PROTEKSI OVERCURRENT DAN GROUND FAULT RELAY UNTUK JARINGAN TEGANGAN MENENGAH MENGGUNAKAN ETAP 19.0.1

Authors

  • M.Wahyu Prawindu Universitas Negeri Medan
  • Muhammad Ilham Hasibbuan Universitas Negeri Medan
  • Hutur P Siahaan Universitas Negeri Medan
  • Arwadi Sinuraya Universitas Negeri Medan
  • Desman Jonto Sinaga Universitas Negeri Medan

DOI:

https://doi.org/10.61722/jssr.v3i6.7088

Keywords:

ETAP; Overcurrent Relay; Power system protection; Relay coordination; Short-circuit current.

Abstract

Medium-voltage (20 kV) power distribution systems are highly susceptible to short-circuit faults and single line-to-ground faults. To ensure system reliability and supply continuity, a protection scheme that is selective, fast, and adaptive to real network conditions is essential. This study aims to design a protection system based on Overcurrent Relays (OCR) and Ground Fault Relays (GFR) using the ETAP 19.0.1 software. The methodology includes single-line system modeling, fault simulations, and analysis of Time-Current Characteristic (TCC) curves and relay selectivity. Simulation results indicate that all relays operate within a selective time range (0.12 s – 0.65 s) without curve overlaps. The minimum selectivity factor (Ks) achieved is 2.1, exceeding the standard threshold of 1.8 for isolated-neutral systems. The proposed design provides reliable protection against high-resistance faults and is suitable for practical implementation in Indonesia’s distribution networks.

References

Barker, T. (2020). Protection coordination using ETAP: A practical guide. IEEE Protection Series. https://doi.org/10.1109/9781728164375

Kulinski, K., & Heyduk, A. (2024). Spectral and wavelet analysis of ground faults in MV systems. Energies, 17(1), 151. https://doi.org/10.3390/en17010151

Toader, C., Enache, A. C., & Stănescu, C. (2021). High-resistance earth fault detection in isolated neutral networks. IEEE Transactions on Power Delivery, 36(4), 2924–2931. https://doi.org/10.1109/TPWRD.2021.3067751

Prasetya, Y., Hartono, A., & Widodo, H. (2022). Evaluasi proteksi gangguan tanah pada sistem isolasi netral 20 kV berbasis simulasi ETAP. Jurnal Rekayasa Elektrika, 20(2), 95–102. https://doi.org/10.25077/jre.v20n2.p95-102.2022 (SINTA 2)

Nugroho, A., Suryana, R., & Kurniawan, I. (2019). Koordinasi OCR dan GFR berbasis trial-error di sistem distribusi 20 kV. Jurnal Teknikom, 12(1), 45–53. https://ejurnal.teknikom.ac.id/index.php/teknikom/article/view/156 (SINTA 2)

IEEE Power Engineering Society. (2001). IEEE Std C37.112-1996: Inverse-time characteristics equations for overcurrent relays. IEEE.

International Electrotechnical Commission. (2016). IEC 60909-0: Short-circuit currents in three-phase AC systems – Part 0: Calculation of currents. IEC Standard.

PT ETAP Automation Inc. (2021). ETAP 19.0.1 User Manual: Power system analysis & operation. Irvine, CA: ETAP.

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Published

2025-11-20

Issue

Vol. 3 No. 6 (2025): Jurnal Sains Student Research (JSSR) Desember

Section

Articles

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