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All Journal Jurnal Edukasi Elektro JTEV (Jurnal Teknik Elektro dan Vokasional ELKHA : Jurnal Teknik Elektro SITEKIN: Jurnal Sains, Teknologi dan Industri JURNAL NASIONAL TEKNIK ELEKTRO PROtek : Jurnal Ilmiah Teknik Elektro Briliant: Jurnal Riset dan Konseptual Seminar Nasional Teknologi Informasi Komunikasi dan Industri CYCLOTRON JURNAL Al-AZHAR INDONESIA SERI SAINS DAN TEKNOLOGI G-Tech : Jurnal Teknologi Terapan MSI Transaction on Education Indonesian Journal of Electrical Engineering and Renewable Energy (IJEERE) Power Elektronik : Jurnal Orang Elektro Indonesian Journal of Electronics, Electromedical Engineering, and Medical Informatics Jurnal Teknik Elektro
Liliana Liliana
Universitas Islam Negeri Sultan Syarif Kasim Riau
Humanities Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Public Health Social Sciences Other

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Analysis of the Effect of Winding Wire Cross-sectional Area and Rotating Speed on the Efficiency of 18 Slot 16 Pole Permanent Magnet Synchronous Generator Delafena, Irfan; Liliana, Liliana
PROtek : Jurnal Ilmiah Teknik Elektro Vol 11, No 1 (2024): PROtek : Jurnal Ilmiah Teknik Elektro
Publisher : Program Studi Teknik Elektro Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/protk.v11i1.6209

Abstract

The potential of renewable energy in Indonesia is very large with a total of 3,643.0 GW. One of them is wind energy, the huge potential of wind energy which is 154.9 GW is very wasted if it is not optimized as well as possible. The biggest obstacle to utilizing wind potential is low wind speed in some areas in Indonesia. So an effective generation system is needed to produce efficient output. A permanent Magnet Synchronous Generator (PMSG) is very suitable for use in areas of potential low-speed winds because low rotation can produce good efficiency. The output value of the Permanent Magnet Synchronous Generator (PMSG) is currently still low and can still be improved, for this research will analyze the broad influence of the cross-section of the winding wire on the stator on the efficiency of the 18 slots 16 poles Permanent Magnet Generator with rotational speed based on wind speed in Indonesia. Variations were carried out on a cross-sectional area of 0.6 mm2-3.6 mm2 winding wire and rotating speeds of 500 rpm, 750 rpm, and 1000 rpm. By using MagNet Infolytica 7.5 software based on Finite Element Method (FEM) to obtain output values in the form of voltage, current, and torque.  For efficiency values, data is reprocessed using Microsoft Excel. The results of this study show that the value of efficiency increases. The best efficiency produced when the rotating speed is 500 rpm is 97.04% at a cross-sectional area of 2.6 mm2 winding wire, for a rotating speed of 750 rpm the efficiency reaches 97.24% at a cross-sectional area of 2.4 mm2 winding wire and at a rotating speed of 1000 rpm the resulting efficiency is 97.16% at a cross-sectional area of 2.4 mm2 winding wire.
PENGARUH PERUBAHAN BEBAN GENERATOR SINKRON TERHADAP SISTEM EKSITASI STUDI KASUS PT. PLN INDONESIA POWER UPK PLTA MANINJAU: PENGARUH PERUBAHAN BEBAN GENERATOR SINKRON TERHADAP SISTEM EKSITASI STUDI KASUS PT. PLN INDONESIA POWER UPK PLTA MANINJAU M.Chaisar Al Furqon, Furqon
Indonesian Journal of Electrical Engineering and Renewable Energy (IJEERE) Vol 4 No 2 (2024): IJEERE December 2024
Publisher : Institut Riset dan Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57152/ijeere.v4i2.1467

Abstract

Generators play an important role in providing electrical energy in power systems. Changing loads on generators in an interconnected system can cause voltage instability. The generator voltage can be regulated through excitation current, which is a DC electrical supply that amplifies the field in the generator to produce electrical energy with an output voltage that depends on the excitation current. The purpose of this study is to analyze the effect of synchronous generator load changes on the excitation system on the generator and the effect of excitation current on the generator voltage of unit 2 of Maninjau Hydroelectric Power Plant. The type of excitation system at Maninjau Hydropower Plant is an excitation system with PMG, the output voltage of unit 2 generator of Maninjau Hydropower Plant is 10 kV. The method used in this research is by looking at the data read on the generator load data and the excitation current read on the DCS parameters. Furthermore, from the data obtained, the generator voltage value is in the range of 10.3 kV - 10.6 kV. This shows that the AVR component works well in reading and giving commands in regulating the generator output voltage. From the data obtained, the value of load changes in the generator affects the value of the injected excitation current. The lowest load is at 10.4 MW with an injected excitation current value of 8 A and the generator voltage is at 10.6 kV, while the largest load is at a value of 16.5 MW with a higher excitation current value.
Optimalization of Load Balancing using Fuzzy Logic to Power Lost Costs in a 1 MVA Transformer Liliana, Liliana; Ullah, Aulia; Aini, Zulfatri
ELKHA : Jurnal Teknik Elektro Vol. 17 No.2 October 2025
Publisher : Faculty of Engineering, Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/elkha.v17i2.97809

Abstract

The 1 MVA transformer at UIN Suska Riau has experienced severe load imbalance, resulting in significant power losses, excessive neutral current, and reduced efficiency that accelerates insulation degradation and shortens its service life. Unlike previous studies that mainly focused on static phase balancing or software-based estimations, this research introduces a real-time load balancing strategy using Fuzzy Logic and projects power loss costs over 10 years. Real-time current measurements were collected over eight consecutive days under peak load conditions and processed through a MATLAB-based Fuzzy Logic system employing triangular membership functions and expert-defined inference rules. The research methodology includes load balancing, calculation of power losses and operational costs, and a comparison of pre- and post-balancing conditions. The results indicate a 95.58% reduction in load imbalance and more than 90% decrease in power losses. Furthermore, the 10-year projection analysis shows long-term operational cost savings of up to 99.65%, while the method also contributes to extending transformer lifetime by preventing overheating and insulation deterioration. The proposed approach enables utilities to mitigate neutral current, reduce energy losses, and lower operating costs across distribution networks.
Analisis Peramalan Susut Umur Transformator Daya Berdasarkan Pembebanan Menggunakan Metode Regresi Linear Juwita, Retno Sari; Liliana, Liliana
BRILIANT: Jurnal Riset dan Konseptual Vol 8 No 3 (2023): Volume 8 Nomor 3, Agustus 2023
Publisher : Universitas Nahdlatul Ulama Blitar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28926/briliant.v8i3.1286

Abstract

Masa pakai transformator dipengaruhi oleh banyak faktor, salah satunya adalah pengaruh pembebanan.  Beban pada trafo menyebabkan peningkatan suhu hot spot. Kenaikan suhu pada trafo juga dipengaruhi oleh suhu sekitar tempat trafo dioperasikan. Penelitian ini bertujuan untuk menganalisis susut umur transformator daya berdasarkan pembebanan menggunakan metode regresi linear. Penelitian ini dilakukan digardu induk pasir putih, Permasalahan yang sering terjadi pada trafo adalah adanya pembebanan berlebih atau peningkatan beban yang mengakibatkan menurunnya kinerja trafo daya dan dapat mengurangi susut umur pada transformator tersebut. Berdasarkan masalah yang ditemukan, Upaya yang dapat dilakukan adalah mengetahui susut umur transformator dengan cara peramalan pembebanan menggunakan metode regresi linear guna membantu memprediksi kapan transformator akan berhenti berfungsi atau berhenti handal dan stabil. Dari hasil perhitungan suhu hot spot menurut standar IEC 60076-7 mencapai batas aman 98⁰C, Pada pembebanan 89,517% dengan susut umur 1,07 pu/tahun pada tahun 2024. Peningkatan beban pada trafo daya 3 yang semakin meningkat setiap waktu dapat mempengaruhi susut umur trafo. Pada tahun 2022 dan 2023 nilai beban masih dibawah 89,517%. Pada periode tahun 2025, Pertumbuhan beban sudah melebihi beban maksimum akibatnya susut umur transformator akan meningkat secara signifikan.
Analisis Jarak Penempatan Arrester Sebagai Pengaman Transformator Daya Dari Gangguan Surja Petir Mahmudah, Aryatul; Liliana, Liliana
BRILIANT: Jurnal Riset dan Konseptual Vol 8 No 3 (2023): Volume 8 Nomor 3, Agustus 2023
Publisher : Universitas Nahdlatul Ulama Blitar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28926/briliant.v8i3.1290

Abstract

Sambaran petir pada saluran transmisi 150 kV dapat menimbulkan tegangan lebih yang dapat menyebabkan kerusakan pada peralatan jika tegangan melebihi tingkat isolasi dasar peralatan (TID). Penelitian ini bertujuan untuk menghitung tinggi parameter tower transmisi, menghitung karaktersitik lightning arrester, dan penentuan jarak optimal penempatan arrester dengan transformator daya dengan menggunakan metode Pantulan Berulang. Metode ini digunakan untuk menghitung jarak arrester dengan cara menghitung karakteristik arrester hingga sampai pada akhirnya mendapatkan hasil jarak optimal arrester. Hasil perhitungan parameter tinggi tower transmisi didapatkan hasil sebesar 41,9 meter. Hasil perhitungan karaktersitik arrester didapatkan nilai tegangan maksimum (Vm) sebesar 165kV, tegangan pengenal (Ea) sebesar 500kV, faktor perlindungan (Vp) sebesar 160kV, margin (M) sebesar 490kV, faktor perlindungan dari TID peralatan (Fp) sebesar 73,3%, faktor perlindungan dari tingkat perlindungan arrester (Fp) sebesar 306,2%, arus pelepasan (R) sebesar 16,5kA dan jarak optimal penempatan arrester (S) sebesar 22,5 meter.
Potensi Listrik Bioetanol Air Kelapa Tua Serta Analisis Biaya Investasinya di Provinsi Riau Mahendra, Kariza Awal; Liliana, Liliana
BRILIANT: Jurnal Riset dan Konseptual Vol 8 No 3 (2023): Volume 8 Nomor 3, Agustus 2023
Publisher : Universitas Nahdlatul Ulama Blitar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28926/briliant.v8i3.1362

Abstract

Besarnya konsumsi listrik saat ini masih dipenuhi oleh listrik yang dihasilkan dari energi tak terbarukan, seperti PLTU maupun PLTD. Pabrik kelapa di Riau dapat memproduksi 6.354 ton/jam. Dari kelapa yang diolah, akan menghasilkan limbah cair sebesar 67% atau 4.190,18 ton limbah. Maka setiap harinya, pabrik kelapa di Riau menghasilkan limbah cair kelapa tua sebesar 100.564,32 ton. Limbah ini menimbulkan dampak buruk bagi lingkungan, diantaranya polusi asam asetat yang terjadi karena fermentasi limbah tersebut. Air kelapa tua memiliki kandungan yang dapat dimanfaatkan menjadi bioethanol, diantaranya kandungan protein, lemak, karbohidrat, gula, zat lainnya. Penelitian ini bertujuan menganalisis potensi bioetanol yang dihasilkan dari air kelapa tua untuk dimanfaatkan menjadi listrik dengan variasi campuran dexlite diantaranya E10, E30, dan E50. Penelitian ini juga bertujuan untuk mengetahui biaya investasi meliputi analisis keuntungan dan juga periode balik modal nya. Penelitian ini dilakukan dengan Metode Fermentasi dan Destilasi yang disimulasikan pada aplikasi superpro designer. Dari penelitian yang dilakukan diperoleh hasil air kelapa tua di Provinsi Riau dalam 5 tahun terakhir dapat menghasilkan rata-rata 12.707,8 liter bio etanol dan  diketahui bahwa campuran E10 merupakan campuran paling optimal menghasilkan energi listrik dan potensi daya, yakni rata-rata menghasilkan energi listrik sebesar 142,5MWh dan potensi daya sebesar 6,074MW. Untuk campuran paling minimum menghasilkan energi maupun daya adalah campuran E50, yakni 123,26 MWh energi dan daya sebesar 5,13 MW. Biaya investasi reaktor bioethanol ini mencapai Rp.216.930.727.724,52 dengan potensi keuntungan yang diperoleh sebesar Rp.237.847.804.709.84, dengan analisis rasio B/C 1,09 dan periode balik modal adalah 11 bulan dari operasional pabrik
Analysis of the Effect of Winding Wire Cross-sectional Area and Rotating Speed on the Efficiency of 18 Slot 16 Pole Permanent Magnet Synchronous Generator Delafena, Irfan; Liliana, Liliana
PROtek : Jurnal Ilmiah Teknik Elektro Vol 11, No 1 (2024): PROtek : Jurnal Ilmiah Teknik Elektro
Publisher : Program Studi Teknik Elektro Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/protk.v11i1.6209

Abstract

The potential of renewable energy in Indonesia is very large with a total of 3,643.0 GW. One of them is wind energy, the huge potential of wind energy which is 154.9 GW is very wasted if it is not optimized as well as possible. The biggest obstacle to utilizing wind potential is low wind speed in some areas in Indonesia. So an effective generation system is needed to produce efficient output. A permanent Magnet Synchronous Generator (PMSG) is very suitable for use in areas of potential low-speed winds because low rotation can produce good efficiency. The output value of the Permanent Magnet Synchronous Generator (PMSG) is currently still low and can still be improved, for this research will analyze the broad influence of the cross-section of the winding wire on the stator on the efficiency of the 18 slots 16 poles Permanent Magnet Generator with rotational speed based on wind speed in Indonesia. Variations were carried out on a cross-sectional area of 0.6 mm2-3.6 mm2 winding wire and rotating speeds of 500 rpm, 750 rpm, and 1000 rpm. By using MagNet Infolytica 7.5 software based on Finite Element Method (FEM) to obtain output values in the form of voltage, current, and torque.  For efficiency values, data is reprocessed using Microsoft Excel. The results of this study show that the value of efficiency increases. The best efficiency produced when the rotating speed is 500 rpm is 97.04% at a cross-sectional area of 2.6 mm2 winding wire, for a rotating speed of 750 rpm the efficiency reaches 97.24% at a cross-sectional area of 2.4 mm2 winding wire and at a rotating speed of 1000 rpm the resulting efficiency is 97.16% at a cross-sectional area of 2.4 mm2 winding wire.
Forecasting Electricity Consumption in Riau Province Using the Artificial Neural Network (ANN) Feed Forward Backpropagation Algorithm for the 2024-2027 Tengku Reza Suka Alaqsa; Zulfatri Aini; Liliana; Nanda Putri Miefthawati
Indonesian Journal of Electronics, Electromedical Engineering, and Medical Informatics Vol. 7 No. 1 (2025): February
Publisher : Jurusan Teknik Elektromedik, Politeknik Kesehatan Kemenkes Surabaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35882/7eeq7029

Abstract

Electricity production in Riau Province fluctuates between surplus and deficit, as reported by the Central Statistics Agency. From a peak of 3,758.75 GWh in 2017, production fell to 525.19 GWh in 2019, mainly due to lack of investment in new power plants and dependence on external electricity supply. This study addresses these challenges by using the Artificial Neural Network (ANN) Feed Forward Backpropagation method to forecast electricity demand from 2024 to 2027. This study aims to analyze the accuracy of the prediction through the Mean Absolute Percentage Error (MAPE), evaluate electricity consumption projections, and calculate the annual growth rate. The gap in this study is the inclusion of previously ignored variables, namely the GRDP of Government Buildings and the number of Government Building customers. The methodology used is Artificial Neural Network Feed Forward Backpropagation. In the training data training, the MAPE was obtained at 4,315%. The electricity consumption prediction obtained is 8,679 GWh in 2024, 9,690 GWh in 2025, 10,959 GWh in 2026, and 12,681 GWh in 2027. The growth rate is also projected to increase, namely 5.67% from 2023 to 2024, 11.65% from 2024 to 2025, 13.10% from 2025 to 2026, and 15.71% from 2026 to 2027.
Medium and Low Voltage Quality Improvement with Shunt Bank Capacitor and Transformer Tap on Morocco Tapung Feeder Duri Sepannur Bandri; Liliana Liliana; Rafika Andari; Zuriman Anthony
G-Tech: Jurnal Teknologi Terapan Vol 9 No 3 (2025): G-Tech, Vol. 9 No. 3 July 2025
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/g-tech.v9i3.7021

Abstract

Voltage and frequency quality are paramount in 20 kV distribution systems that supply both medium and low voltage feeders. This study explores the significant voltage deficiency in the Maroko Tapung extension of PT PLN (PERSERO), ULP Duri, which dropped 16% from the nominal value. The main objective is to implement a comprehensive voltage restoration strategy to improve the efficiency of the 20 kV distribution system so that it reaches a better standard. The restoration was carried out by setting tap changers, installing shunt capacitor banks, and gradually increasing the tap settings on distribution transformers. Simulation results show a significant improvement in the minimum voltage level across the network, with the lowest voltage on the medium voltage side increasing to 91.69% and on the low voltage side to 90.47%. These outcomes demonstrate that the implemented multi-stage restoration procedures effectively brought the voltage quality within the acceptable limits defined by SPLN 1: 1987 standards, which permit a deviation of +5% and -10% from the nominal voltage. This study highlights the effectiveness of combined tap adjustments and shunt capacitor installation in mitigating voltage drops and ensuring compliance with regulatory standards in distribution systems.
Comparative Analysis of Static Var Compensator and Distributed Generation Installation on Voltage Profile Zulfatri Aini; Guido, Muhammad Guido Randa Febiant; Tengku Reza Suka Alaqsa; Liliana
Jurnal Teknik Elektro Vol. 16 No. 1 (2024)
Publisher : LPPM Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jte.v16i1.8824

Abstract

In Indonesia, electricity is a basic need with demand that continues to grow. PT PLN (Persero) projects an increase in electricity consumption of 8.9% by early 2022, highlighting the urgent need to address frequent problems such as blackouts, power losses, and voltage sags in the power distribution system. Effective solutions, including Static VAR Compensator (SVC) and Distributed Generation (DG), have been proposed to improve voltage stability and reduce power losses. This study evaluates and compares the performance of SVC and DG on a standard IEEE 14-bus system under increased load conditions. Using power flow analysis in ETAP, we simulate the installation of SVC at 15.99 Mvar and DG at 20.58 Mvar on bus 9, which shows optimal results. The findings show that DG slightly outperforms SVC in improving voltage stability and reducing power losses, with a 0.16% greater voltage increase and a 3.2 MW or 17.3% reduction in power losses. These results indicate that although both devices meet PLN’s voltage standards and improve power system efficiency, DG provides a slightly superior improvement in overall system performance.
Co-Authors A Fahrezi, Irgi Andaiyani, Sri Candra, Oriza Delafena, Irfan Esa Mutari Guido, Muhammad Guido Randa Febiant Hanif Naufal Qasthari Hendrick, Fran Hidayat, Ariodillah Irgi A Fahrezi Irvan Nurhadi Nurhadi Juwita, Retno Sari Mahendra, Kariza Awal Mahmudah, Aryatul Mardalena Mardalena Nanda Putri Miefthawati Rafika Andari Sepannur Bandri Sepannur Bandri Shodrokova, Xenaneira Syahputra. I Syarief, Ahmad Ridwan tahlil darmiayu putri Tengku Reza Suka Alaqsa Ullah, Aulia Zulfatri Aini Zuriman Anthony