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All Journal Jurnal Pendidikan Teknologi dan Kejuruan JTEIN: Jurnal Teknik Elektro Indonesia Andalasian International Journal of Applied Science, Engineering, and Technology Jurnal Andalas: Rekayasa dan Penerapan Teknologi
Savira, Resti
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Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Health Professions Industrial & Manufacturing Engineering Mechanical Engineering Other

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Effect of PLTS power factor settings on power losses and voltage conditions in 20 kV medium voltage networks Savira, Resti; Sudiarto, Budi
Jurnal Pendidikan Teknologi Kejuruan Vol 6 No 2 (2023): Regular Issue
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jptk.v6i2.32523

Abstract

As technology develops, the rapid increase in PV capacity will affect the grid. This makes it important to determine the PV limit that can be injected into the grid defined as the PV Hosting Capacity (PVHC). In this paper, the author evaluates and analyses the impact of PV connections on medium voltage distribution lines (20kv) using ETAP 19.01 simulation. A medium voltage Grid with a capacity of 30MVA, has an industrial load varies from 650 kVA to 25 kVA with the total load capacity of 2225 KVA. The loads are supplied from two sources, grid and PV system. The simulation results state that the best of grid performance which provide the best losses and voltage condition when connecting 100% capacity of PV to the existing grid network is by setting the inverter power factor to 0.9. This setting will provide lowest power losses of 0,7 kW and improve the voltage value.
Sosialisasi Energi Hijau untuk Masa Depan : Mengenal Energi Terbarukan Sejak Dini di SMA Negeri 16 Padang Muhardika; Abadi, Akbar; Savira, Resti; Kamisa Putri , Yani; Meka Seftiani, Yudia
Jurnal Andalas: Rekayasa dan Penerapan Teknologi Vol. 5 No. 1 (2025): Juni 2025
Publisher : Electrical Engineering Department Faculty of Engineering Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jarpet.v5i1.116

Abstract

Peningkatan pemahaman generasi muda tentang energi terbarukan sangat penting untuk mendukung transisi energi bersih dan pembangunan berkelanjutan di Indonesia. Namun, tingkat literasi energi hijau di kalangan siswa SMA masih tergolong rendah. Untuk itu, Program Studi Teknik Listrik Politeknik Negeri Padang melaksanakan kegiatan pengabdian masyarakat berupa sosialisasi energi terbarukan di SMA Negeri 16 Padang. Kegiatan dilaksanakan dalam bentuk presentasi edukatif, diskusi interaktif, dan demonstrasi aplikasi energi terbarukan. Evaluasi dilakukan menggunakan kuesioner pre-test dan post-test untuk mengukur efektivitas kegiatan terhadap peningkatan pemahaman siswa. Hasil kegiatan menunjukkan adanya peningkatan pemahaman yang signifikan pada seluruh indikator yang diukur. Pemahaman siswa terhadap konsep dasar energi terbarukan meningkat dari 32% menjadi 87%, pemahaman tentang jenis-jenis energi hijau meningkat dari 25% menjadi 80%, dan pemahaman manfaat energi terbarukan bagi lingkungan meningkat dari 38% menjadi 95%. Selain itu, seluruh siswa (100%) menyatakan pentingnya penerapan energi terbarukan di masa depan. Dengan demikian, kegiatan ini terbukti efektif dalam meningkatkan literasi energi hijau di kalangan siswa SMA dan dapat menjadi model yang layak direplikasi di sekolah lain. Ke depan, diperlukan kesinambungan program serupa untuk memperkuat pendidikan lingkungan di tingkat pendidikan menengah.
Effectiveness Analysis of Soft Starter in Reducing Starting Current of 400 kW Three-Phase Induction Motor for Chipper Machines in the Wood Processing Industry Savira, Resti; Abadi, Akbar; Putri, Yani Kamisa; Rahman, Aldi; Alhamda, Dinda Sukra
Jurnal Teknik Elektro Indonesia Vol 6 No 2 (2025): JTEIN: Jurnal Teknik Elektro Indonesia
Publisher : Departemen Teknik Elektro Fakultas Teknik Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jtein.v6i2.788

Abstract

The wood processing industry heavily relies on three-phase induction motors to drive high-power equipment such as chipper machines. One of the major challenges in operating these motors is the high inrush current during startup, which can destabilize the power system and accelerate equipment wear. This study aims to analyze the effectiveness of using a soft starter as a starting method for a 400kW induction motor in a chipper application. The research method is an experimental case study involving direct field observation and theoretical calculations of electrical parameters such as nominal current, current limiting, torque, and trip class. The observation results show that the actual starting current of 1,216.15 A remains below the calculated current limiting threshold of 1,575 A, while the trip class value of 2,835 A provides optimal protection. The use of a soft starter proves effective in reducing inrush current, maintaining voltage stability, and enhancing the reliability and efficiency of motor operation. This research supports the application of soft starters as a suitable solution for high-power motor starting in heavy industrial settings.
Sosialisasi Penguatan dan Pemahaman Renewable Energy di SMK Negeri 2 Solok Kecamatan Tj. Harapan, Kota Solok, Sumatera Barat Muhardika; Dodi, Nofri; Meka Seftiani, Yudia; Savira, Resti; Kamisa Putri , Yani
Jurnal Andalas: Rekayasa dan Penerapan Teknologi Vol. 4 No. 2 (2024): Desember 2024
Publisher : Electrical Engineering Department Faculty of Engineering Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jarpet.v4i2.107

Abstract

Pemahaman dan kesadaran tentang pentingnya renewable energy harus ditanamkan sejak dini melalui Pendidikan formal. Sekolah Menengah Kejuruan (SMK), sebagai institusi Pendidikan vokasi memiliki peran strategis dalam menghasilkan lulusan yang siap kerja. SMK N 2 Solok merupakan salah satu sekolah menengah kejuruan yang memiliki potensi besar dalam mengintegrasikan konsep renewable energy. SMK N 2 Solok dipilih sebagai lokasi kegiatan karena memiliki jurusan Teknik Instalasi Tenaga Listrik yang relevan dengan pengembangan teknologi energi terbarukan serta didukung oleh fasilitas laboratorium yang memadai. Pelaksanaan program pengabdian masyarakat di SMKN 2 Solok berfokus pada peningkatan pemahaman siswa dan guru terhadap renewable energy. Dengan metode sosialisasi bentuk ceramah yang meliputi presentasi materi dan permainan simulasi integrasi renewable energy kedalam existing grid. Hasil evaluasi menyatakan bahwa, dari 25 responden, dimana 92% adalah siswa, 44% menyatakan sangat sesuai dan 48% diantaranya menyatakan sesuai topik dan materi sosialisasi dengan kebutuhan mitra.
Effect of PLTS power factor settings on power losses and voltage conditions in 20 kV medium voltage networks Savira, Resti; Sudiarto, Budi
Jurnal Pendidikan Teknologi Kejuruan Vol 6 No 2 (2023): Regular Issue
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jptk.v6i2.32523

Abstract

As technology develops, the rapid increase in PV capacity will affect the grid. This makes it important to determine the PV limit that can be injected into the grid defined as the PV Hosting Capacity (PVHC). In this paper, the author evaluates and analyses the impact of PV connections on medium voltage distribution lines (20kv) using ETAP 19.01 simulation. A medium voltage Grid with a capacity of 30MVA, has an industrial load varies from 650 kVA to 25 kVA with the total load capacity of 2225 KVA. The loads are supplied from two sources, grid and PV system. The simulation results state that the best of grid performance which provide the best losses and voltage condition when connecting 100% capacity of PV to the existing grid network is by setting the inverter power factor to 0.9. This setting will provide lowest power losses of 0,7 kW and improve the voltage value.
Performance Analysis of a 220 V DC Lead-Acid Battery Using the Dummy Load (Torkel 840) Method in The Electrical System of a Steam Power Plant 2x 100 MW Onanda, Witri; Muhardika; Savira, Resti; Abadi, Akbar; Amir, Anisa
Andalasian International Journal of Applied Science, Engineering and Technology Vol. 6 No. 1 (2026): March 2026
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijaset.v6i1.317

Abstract

Battery performance can be affected by operational disturbances such as overcharging and deep discharging, which may lead to voltage instability, temperature rise, and accelerated degradation. This study analyzes the effect of discharge current on the voltage and temperature characteristics of a lead-acid battery in a 220 V DC LAA system using a dummy load method. The experimental test was conducted using a Torkel 840 battery discharge tester with a constant discharge current of 25 A for a duration of 10 hours. Parameters including total battery voltage, average cell voltage, battery temperature, and electrolyte specific gravity were measured periodically during the discharge process. The minimum allowable battery voltage was determined based on manufacturer specifications to ensure safe operation. The results indicate that the battery voltage decreased gradually and remained above the minimum allowable limit of 187.2 V, demonstrating stable voltage performance under constant load conditions. Battery temperature increased moderately from 22.36 °C to 25.93 °C and remained within the recommended operating range. The electrolyte specific gravity showed a consistent decrease corresponding to normal electrochemical behaviour. These results confirm that the tested lead-acid battery is suitable for reliable operation as a DC backup power source in power plant applications.
Co-Authors Akbar Abadi, Akbar Alhamda, Dinda Sukra Amir, Anisa Budi Sudiarto Kamisa Putri , Yani Meka Seftiani, Yudia Muhardika Nofri Dodi, Nofri Onanda, Witri Putri, Yani Kamisa Rahman, Aldi