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Hutajulu, Albert Gifson
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Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Electrical & Electronics Engineering Engineering

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Pengaturan Automated Voltage Regulator Untuk Kestabilan Sistem Pembangkit Listrik Tenaga Uap Menggunakan Mathlab Hutajulu, Albert Gifson; Yosia, Rainhard
Jurnal Teknologi Vol. 12 No. 1 (2024): Jurnal Teknologi
Publisher : Universitas Jayabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31479/jtek.v12i1.348

Abstract

Abstrak Terjadinya gangguan pembebanan pada PLTU Bolok di semester 1 2022 Unit #1,2 dimana terjadi trip akibat gangguan jaringan sistem Timor akibat adanya hujan badai dan petir. Kejadian ini mengakibatkan unit PLTU Bolok mengalami gagal house load akibat PMT sisi 70kV dan Circuit Breaker Generator posisi Open. Tujuan penelitian agar Automatic Voltage Regulator (AVR) memiliki peran yang sangat penting dalam menjaga tegangan output generator agar tetap berada pada nilainya walaupun saat terjadi perubahan beban. Metode penelitian menggunakan simulasi mathlab yaitu pemodelan sistem Automatic Voltage Regulator dan pengujian beban dalam kondisi beban penuh ini membuktikan bahwa sistem AVR bekerja dengan baik dalam mengontrol tegangan luaran generator sesuai dengan fungsi AVR itu sendiri. Dengan terjadinya gangguan ini maka diperlukan pengaturan ulang terhadap AVR agar dapat bekerja dengan baik dalam mengatasi setiap perubahan beban yang terjadi. Dengan demikian kestabilan sistem kelistrikan pada pulau Timor dapat tetap terjaga dan juga berkontribusi dalam peningkatan kinerja perusahaan. Adapun hasil penelitian adalah nilai persentasi regulasi tegangan terendah dan tertinggi disimpulkan bahwa nilai persentase regulasi tegangan masih dalam keadaan normal dan tidak melebihi nilai toleransi yang ditetapkan sehingga Automatic Voltage Regulator bekerja dengan baik sebagai pengendalian tegangan generator. Keywords : Automatic Voltage Regulator, Over Excitation, Kestabilan Sistem
Design and Implementation of a Solar-Powered Pest Repellent System for Shallot Farms Using Ultrasonic, and Light Emitters Based on ESP32 Hutajulu, Albert Gifson; Daffa, Dhimas Alviero
Jurnal Teknik Informatika (Jutif) Vol. 6 No. 4 (2025): JUTIF Volume 6, Number 4, Agustus 2025
Publisher : Informatika, Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52436/1.jutif.2025.6.4.5198

Abstract

Shallots are an agricultural commodity of high economic value that often experiences pest attacks, causing a decrease in crop yields. Commonly used pest control methods, such as pesticides and manual expulsions, are often less effective and can have a negative impact on the environment. Therefore, this research aims to design and develop a pest repellent based on the ESP32 microcontroller that can be operated in automatic or manual mode and utilize the resources of the Solar Power Plant (PLTS) supported by ultrasonic loads and LED lights. The research methods used include device design using PCB, load testing, and system performance analysis based on the voltage and current generated. The test results show that the system has high stability during the day with an average voltage of 12.54V and an average current of 0.07A for ultrasonic loads. However, at night, the system degrades, because the solar cells do not produce energy. The stability of the system is also more optimal at the use of ultrasonic loads compared to LED loads which exhibit higher voltage fluctuations. Thus, this tool can be an effective and environmentally friendly solution for shallot farmers in reducing pest attacks. By providing a performance analysis of different actuators under solar-powered constraints, this research contributes to the development of low-power, autonomous IoT system for smart agriculture.
Co-Authors Daffa, Dhimas Alviero Yosia, Rainhard