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All Journal Buletin Poltanesa Jurnal Impresi Indonesia Industrial Research Workshop and National Seminar
Samsu Tuwongkesong
Politeknik Negeri Manado
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Kontrol RTU pada GH Manembo dengan Scada Jaringan Distribusi 20 KV Sistem Minahasa Samsu Tuwongkesong; Muchdar Daeng Patabo; Sukandar Sawidin; Julianus G. Daud; I Wayan E. P. Utama
Prosiding Industrial Research Workshop and National Seminar Vol 11 No 1 (2020): Prosiding 11th Industrial Research Workshop and National Seminar (IRWNS)
Publisher : Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1278.967 KB) | DOI: 10.35313/irwns.v11i1.2043

Abstract

Pada Sistem Kelistrikan Minahasa penanganan gangguan dapat dilakukan secara cepat dengan menggunakan sistem pengaturan proteksi jarak jauh yang mampu memonitoring, kendali dan akuisi data secara real time. Supervisory Control and Data Acquisition (SCADA) terdapat sistem proteksi yang bekerja secara real time yang dapat dikendalikan dari jarak jauh sehingga mampu dijadikan solusi dari permasalahan yang terjadi dalam sistem distribusi agar penanganan terhadap gangguan dapat dilakukan dengan cepat. Tapi pada kenyataannya Sistem SCADA pada Remote Terminal Unit (RTU) yang ada di Gardu Hubung Manembo-Nembo kadang kala tidak bisa di kontrol oleh Master Terminal Unit (MTU) pada sistem SCADA. Penelitian ini bertujuan untuk mengetahui apa penyebab terjadinya gangguan tersebut dan mencari jalan keluar untuk meminimalisir frekuensi terjadinya kegagalan eksekusi sehingga dapat meningkatkan keandalan dari sistem distribusi tersebut. Hasil pengujian menunjukkan bahwa gagal remote control disebabkan oleh sinyal provider komunikasi yang kurang baik di lokasi remote station dan keandalan dari peralatan komunikasi seperti modem GSM dalam menangkap sinyal mempengaruhi tingkat kegagalan remote control. Trend remote control setelah dilakukan perbaikan presentase keberhasilan remote control mengalami peningkatan dari 94.83% dengan perhitungan 2089 kali eksekusi sukses dari 2203 kali eksekusi di bulan april naik menjadi 95.29% di bulan mei 2020 dengan 2672 sukses dari 2804 kali eksekusi.
Solutions to Power Quality Problems in Electric Vehicle Battery Recharging Julianus Gesuri Daud; Deitje Sofie Pongoh; Samsu Tuwongkesong; Muchdar Dg. Patabo
Poltanesa Vol 26 No 2 (2025): December 2025
Publisher : P3KM Politeknik Pertanian Negeri Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51967/tanesa.v26i2.3561

Abstract

The recent proliferation of electric vehicle (EV) charging stations has a serious impact on the power quality of the electricity distribution network. This issue cannot be ignored, as EV chargers are a type of non-linear load. With the increasing presence of non-linear loads in modern power systems due to the influence of EV charging, harmonic distortion, both THD and TDD, will become a significant problem, especially for distribution transformers that supply power to EVs. The increasing number of high-power electric vehicle batteries being charged at DC fast-charging stations, especially those with large load capacities, and when parallel with other vehicles, can cause overloads during peak hours, sudden power gaps, and voltage drops, all of which contribute to power quality issues, particularly in the surrounding electricity grid. Harmonic distortion, particularly due to the access of EV power supplies to the distribution network, which causes increased power quality disturbances, must be eliminated because the resulting odd harmonics will impact the performance of electrical equipment due to the suboptimal P and Q power in the distribution line. To understand the impact of charging electric vehicles, high-efficiency chargers are required in the power grid. Simulations revealed a high harmonic spectrum approaching 25%, but this was reduced to a much lower and safer level using passive filters.
Protection System Analysis of 20 kV Medium Voltage Distribution Network: A Case Study on SM3 Feeder, Tomohon Main Substation Amelia Oktavianty Palit; Marcela Beatrix Karewur; Brayen Aprilio Pijoh; Samsu Tuwongkesong; Donald Bastian Noya
Jurnal Impresi Indonesia Vol. 5 No. 5 (2026): Jurnal Impresi Indonesia
Publisher : Riviera Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58344/jii.v5i5.7773

Abstract

The protection system of a 20 kV medium-voltage distribution network plays a critical role in ensuring the reliability and safety of power delivery. An effective protection system must rapidly and selectively detect and isolate faults to minimize the affected area and outage duration. The SM3 Feeder at the Tomohon Main Substation, operated by PT PLN (Persero) UP3 Manado, serves a region characterized by diverse network configurations and environmental conditions, requiring a robust and well-coordinated protection scheme. This study analyzed the performance of the protection system on the SM3 Feeder, employing a methodology that encompasses collection of technical data for installed protection devices including circuit breakers (PMT), automatic reclosers, fuse cut outs (FCO), and protection relays. The analysis evaluates the coordination and settings of these devices against the fault characteristics of the network and benchmarks them against PLN and IEC standards. In addition, an IoT-based monitoring and protection system was designed and tested to complement conventional field protection. Results indicate that the protection system on SM3 Feeder generally functions adequately in safeguarding the network. However, certain conditions require adjustment particularly the coordination margin between the main relay and Recloser RC-1 at fault currents between 500–700 A. Improved coordination is expected to reduce the extent of affected areas during faults and enhance overall supply reliability. This study serves as an evaluation basis and provides actionable recommendations for PLN in managing and improving the medium-voltage distribution protection system in the UP3 Manado service area.
Co-Authors Amelia Oktavianty Palit Brayen Aprilio Pijoh Deitje S. Pongoh Donald Bastian Noya I Wayan E. P. Utama Julianus G. Daud Julianus Gesuri Daud Marcela Beatrix Karewur Muchdar Daeng Patabo Muchdar Dg. Patabo Sukandar Kandar Sawidin