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Wiwin A Oktaviani
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Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Engineering

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Respon Frekuensi dan Tegangan Saat Gangguan pada Bus-Bus Sistem Kelistrikan Steam Turbine Generator – Batu Bara (Stg-Bb) P.T Pupuk Sriwijaja Palembang Wiwin A Oktaviani; Agus Alpran Munandar; Taufik Barlian
Jurnal Rekayasa Elektro Sriwijaya Vol. 3 No. 2 (2022): Jurnal Rekayasa Elektro Sriwijaya
Publisher : Jurusan Teknik Elektro Fakultas Teknik Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jres.v3i2.49

Abstract

Steam Turbine Generator – Batu Bara (STG-BB) merupakan unit pembangkit baru di PT.PUSRI berkapasitas 32 MW yang diperuntukkan untuk mendukung unit-unit pembangkit lama yang berusia lebih dari 20 tahun. Untuk menilai kinerja sistem kelistrikan STG-BB saat terjadi gangguan dilakukan simulasi stabilitas transient dengan asumsi gangguan terjadi di setiap bus sistem. Penelitian ini dibatasi mencakup kestabilan frekuensi dan tegangan. Dari simulasi yang dilakukan menunjukkan baik frekuensi dan tegangan mengalami kenaikan dan penurunan melebihi batas toleransi yang diizinkan, baik saat terjadi gangguan simetris maupun asimetris. Perubahan nilai kedua parameter ini berlangsung di kisaran 1,2 – 2 detik dengan penurunan frekuensi rata-rata sebesar 98,3%. Dari sisi tegangan, pada saat terjadi gangguan simetris tegangan pada setiap bus akan mengalami penurunan terutama pada bus yang terganggu dan bus-bus yang berada di bawahnya tegangan turun hingga mencapai nol. Sedangkan pada saat terjadi gangguan asimetris kenaikan tegangan mencapai lebih dari 200%. Hasil ini menunjukkan tingkat kestabilan transient sistem kelistrikan STG-BB saat gangguan terjadi di bus-bus belum baik, sehingga diperlukan analisis lanjutan dengan mensimulasikan proteksi frekuensi mengikuti standar pedoman tertentu seperti IEEE.
Penempatan Kapasitor Paralel pada Penyulang Pajajaran GI Jakabaring Wiwin A Oktaviani; Supri Suhendra; Taufik Barlian
Jurnal Rekayasa Elektro Sriwijaya Vol. 4 No. 1 (2022): Jurnal Rekayasa Elektro Sriwijaya
Publisher : Jurusan Teknik Elektro Fakultas Teknik Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jres.v4i1.79

Abstract

In order to compensate for reactive power on electrical power distribution lines, parallel capacitors have been utilized extensively. Capacitor placement does not constantly improve the total voltage and power factor. Therefore, it is crucial to establish the ideal capacitance (size) and position of the capacitors to reduce power losses in the distribution line. Palembang City's New Jakabaring Substation is a substation situated in a region with a rapid load increase. Pajajaran Feeder, one of the several feeders at this substation, carries the weight of numerous significant loads as well as expanding residential areas. Reactive power computation and optimal capacitor placement (OCP) were the two simulation techniques used in the study, which were carried out using ETAP 19.0. The study's findings demonstrate that using reactive power calculations, the original Padjajaran feeder voltage drop is improved from 93.26% to 98.98% while utilizing OCP, the voltage drop is improved from 93.26% to 100.1%. However, OCP provides a more consistent capacitance value of the capacitors in the range of 930 kVAR compared to reactive power calculations, whose results are more inconsistent. Calculations using OCP gives more capacitors, namely as many as 20 more than those produced by calculating the reactive power of 14 capacitors. The location of parallel capacitors in the Padjajaran feeder can function optimally and support a load of up to 80% of the transformer capacity rating.
Analisis Kinerja PLTS 200WP Secara Realtime Menggunakan IoT Yosi Apriani; Muhammad Alfarizi; Zulkifli Saleh; Wiwin A Oktaviani; Krisna Nata Wijaya
Jurnal Ampere Vol. 8 No. 1 (2023): JURNAL AMPERE
Publisher : Universitas PGRI Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31851/ampere.v8i1.12300

Abstract

Technological developments occur in various ways, for example wireless communication technology, computer networks and the internet, designing monitoring and control systems based on the Internet of Things (IoT). The application of the IoT concept has been widely carried out with various studies in various fields of life including analyzing solar panels in real time which can be done by utilizing the development of micro and wireless and internet-based control technology called IoT. The performance of a PLTS can be assessed by calculating the efficiency of the PLTS components themselves. The purpose of this study is to analyze the performance of a 200Wp PLTS from IoT-based Blynk application data. The methodology used in this study starts from 1) tool design; 2) tool making; 3) tool testing; 4) evaluation. From the results of the study it was found that the efficiency of solar panels was 11.35% The efficiency of SCC was 93%, the efficiency of Baerai was 94.8%, the efficiency of inverters was 92.6%, and the total efficiency of PLTS was 9.29% . The efficiency of this PLTS is considered low for a 200Wp PLTS
Co-Authors Agus Alpran Munandar Apriani, Yosi Krisna Nata Wijaya Muhammad Alfarizi Supri Suhendra Taufik Barlian Zulkifli Saleh