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All Journal Jurnal Teknologi Elektro Jurnal Elementer (Elektro dan Mesin Terapan) JEEMECS (Journal of Electrical Engineering, Mechatronic and Computer Science) RELE: Rekayasa Elektrikal dan Energi Jurnal Teknik Elektro Wahana : Tridarma Perguruan Tinggi Journal of Engineering and Scientific Research (JESR) Jambura Journal of Electrical and Electronics Engineering Jurnal Riset Rekayasa Elektro Abdimas: Jurnal Pengabdian Masyarakat Universitas Merdeka Malang International Journal of Electrical, Energy and Power System Engineering (IJEEPSE) Journal of Applied Electrical Engineering BERNAS: Jurnal Pengabdian Kepada Masyarakat BEES: Bulletin of Electrical and Electronics Engineering JURNAL POLI-TEKNOLOGI Journal Geuthee of Engineering and Energy Pelita: Jurnal Pengabdian kepada Masyarakat Jurnal JEETech
Reza Sarwo Widagdo
Department Of Electrical Engineering, Universitas 17 Agustus 1945 Surabaya, Indonesia
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Solar Panel Education as a Renewable Energy System for Students of SMAN 20 Surabaya Widagdo, Reza Sarwo; Slamet, Puji; Hariadi, Balok; Hartayu, Ratna; Wardah, Izzah Aula
Pelita: Jurnal Pengabdian kepada Masyarakat Vol. 4 No. 1 (2024): Pelita: Jurnal Pengabdian kepada Masyarakat
Publisher : Perkumpulan Kualitama Edukatika Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51651/pjpm.v4i1.483

Abstract

Introduction of Solar Panels as a Renewable Energy System for high school students in Surabaya City. In particular, the city of Surabaya can be an effort to support the realization of the Sustainable Development Goals (SDGs) program. The team has held online discussions with partners, namely SMAN 20 Surabaya to carry out the introduction of solar panels as a renewable energy system to students at SMAN 20 Surabaya. The purpose of community service is to socialize the use of solar power plants through learning activities (education) and solar power plants training for school students and teachers. The method used in this activity is divided into three stages. In the first stage, field observations were carried out to find problems related to the availability of electrical energy in schools. In the second stage, the implementation of community service includes the delivery of solar panel material with lectures, demonstrations, and the design of solar power plants systems at schools. In the third stage, it is an evaluation or feedback stage by giving questionnaires to participants. The results of this community service activity provide information on understanding solar panels and batteries in the good category. Practical activities need to be taught to student, so solar power plants teaching aids are needed at the school. The team made an educational activity for students, namely a demo of converting solar energy into electrical energy. The implementation of this community service has been carried out well.
BUMDes Development Program by Creating Packaging Design and Marketing Through Online Stores to Increase Economic Value in Balongmojo Village, Mojokerto Widagdo, Reza Sarwo; Ardianik, Ardianik; Hartayu, Ratna; Setyadjit, Kukuh; Kusmiyati, Kusmiyati
Pelita: Jurnal Pengabdian kepada Masyarakat Vol. 4 No. 2 (2024): Pelita: Jurnal Pengabdian kepada Masyarakat
Publisher : Perkumpulan Kualitama Edukatika Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51651/pjpm.v4i2.503

Abstract

Achieving social welfare in all aspects is one of Indonesia's national goals. The village, as the smallest unit in the structure of society, is often neglected in efforts to achieve this goal. Therefore, regulations were created to address village issues in the hope of improving their welfare. One of the aspects regulated in village regulations is BUMDes, an entity that has a significant role in improving the village economy. This article will discuss the role of BUMDes in advancing the economy, with a case study of Balongmojo Village. Several work programs are proposed, including diversifying the production of kerupuk kelor, creating attractive packaging designs using Canva, and utilizing sugarcane bagasse waste to make it marketable. The results show that BUMDes can be effective in improving the economy of Balongmojo Village by developing local entrepreneurs through strong branding strategies and product market expansion.
Assessment of Grounding System to Reduce Potential Electrical Disturbances at Haji Regional General Hospital, East Java Province Widagdo, Reza Sarwo; Budiono, Gatut; Tauladan, Imam Suri; Tasmono, Hadi; Nababan, Wendi Antonius S
Pelita: Jurnal Pengabdian kepada Masyarakat Vol. 4 No. 3 (2024): Pelita: Jurnal Pengabdian kepada Masyarakat
Publisher : Perkumpulan Kualitama Edukatika Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51651/pjpm.v4i3.517

Abstract

The grounding system in the Hospital is used to overcome when there is a touch voltage and step voltage on the transformer and also other equipment installed on the transformer. The process carried out in this study was carried out by measuring the grounding and processing the data used to determine the size and smallness of the touch voltage and Step voltage. The results of the calculation of the grounding resistance in the hospital obtained a value of 5,056 ? which can cause a touch voltage with a value of 1014 V. The step voltage in humans weighing 50 Kg produces a value of 962,8 V and the step voltage for humans weighing 70 Kg produces a value of 1299 Volts. With the results of the values ??obtained, that the value has been in accordance with the standard of Step voltage based on IEEE 80-2013 with a value of 3,140 V with a duration of disturbance of 0,5 seconds.
Analysis of Losses Due to Load Unbalance in a 2000 kVA Transformer at Supermall Mansion 2 Tower Tanglin Surabaya Reza Sarwo Widagdo; Aris Heri Andriawan
Journal of Engineering and Scientific Research Vol. 5 No. 2 (2023)
Publisher : Faculty of Engineering, Universitas Lampung Jl. Soemantri Brojonegoro No.1 Bandar Lampung, Indonesia 35141

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jesr.v5i2.144

Abstract

The load unbalance causes a neutral current, the current flowing in the neutral conductor will cause an increase in losses in the transformer. The greater the losses incurred, the efficiency and reliability of the transformer will decrease. Based on this, a study was conducted on analyzing the losses on distribution transformers at Supermall Mansion 2 Tower Tanglin which aims to determine the percentage value of transformer loading, the value of transformer imbalance, the value of transformer losses, and the value of transformer efficiency. This is done so that the value of the installed transformer does not exceed the applicable SPLN value. During the measurement, it was found that the percentage value of the transformer loading was 38.88% during the daytime and 48.89% at night (maximum SPLN 80%, minimum 40%). The load unbalance value is 11.66% during the daytime and 10.33% at night (SPLN is categorized as good if < 10%). Copper losses (Pcu) are 91.3 kW during the daytime and 94.2 kW at night. The value of losses due to neutral currents is 0.134 kW with a percentage of 0.0071% during the daytime and 0.173 kW with a percentage of 0.0090% at night. The percentage of the current value in the neutral conductor is 26.36% during the day and 24.04% at night (SPLN is categorized as good if < 20%).
Implementation of Solar Cell and Photocell-Based Street Lighting in Gaprang Village, Blitar Widagdo, Reza Sarwo; Ardianik; Puji Slamet; Aris Heri Andriawan; Tauladan, Imam Suri; Balok Hariadi
Pelita: Jurnal Pengabdian kepada Masyarakat Vol. 5 No. 4 (2025): Pelita: Jurnal Pengabdian kepada Masyarakat
Publisher : Perkumpulan Kualitama Edukatika Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The increasing demand for sustainable energy sources has encouraged the application of renewable technologies in rural infrastructure, particularly in public lighting systems. This study focuses on the implementation of solar cell and photocell-based street lighting in Gaprang Village, Blitar Regency, as a solution to reduce dependency on conventional electricity and to enhance energy efficiency. The system utilizes photovoltaic modules as the primary energy source to convert solar radiation into electrical power, which is stored in batteries and subsequently used to supply street lamps during nighttime. In addition, the integration of photocell sensors enables automatic control of the lighting system by detecting environmental illumination levels, ensuring that the lamps operate only when required. The design and installation process involved site surveying, load estimation, solar panel configuration, and the application of photocell-based automation. The results demonstrated that the system provided reliable illumination for rural roads, significantly lowering operational costs and minimizing environmental impact compared to traditional grid-powered lighting. Furthermore, the use of photocells improved energy management by preventing unnecessary power consumption during daylight. The activity will take place in August 2025, with a focus on installation in Gaprang Village. The results of the activity include community understanding of the benefits and maintenance of street lights, as well as the implementation of solar cell-based technology. The conclusion states that this project can provide a positive and sustainable impact, empowering communities and creating efficient infrastructure that aligns with renewable energy initiatives.
Pengaruh Penyesuaian Parameter Membership Function pada Sistem Kendali Robot Balancing Berbasis Fuzzy Logic Santoso Santoso; Balok Hariadi; Ratna Hartayu; Reza Sarwo Widagdo; Wahyu Setyo Pambudi; M Ary Heryanto
Jurnal JEETech Vol. 5 No. 2 (2024): Nomor 2 November
Publisher : Universitas Darul Ulum

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32492/jeetech.v5i2.5205

Abstract

This research develops a balancing robot control system using a fuzzy logic approach, focusing on the adjustment of membership function parameters. The main components of the system include the ESP32 microcontroller, MPU6050 sensor for detecting tilt angle and angular velocity, and L298 motor driver for DC motor actuation. Triangular-shaped membership functions are implemented, and parameters a, b, and c are adjusted through simulation to enhance system performance. Evaluation results indicate an average settling time of 1.2 seconds, a maximum overshoot of 5%, and a steady-state error of less than 2 degrees. This adjustment successfully balances response speed and stability, providing important guidance for developers in designing a more optimal fuzzy logic control system. The research was conducted at the Electrical Engineering Laboratory of 17 August 1945 University (Untag) Surabaya from June to December 2023.
Service Life Analysis of Underground Cables Using PI and DAR Methods Giovanni Dimas Prenata; Mohammad Eriko Ramadhani; Reza Sarwo Widagdo
Jurnal JEETech Vol. 7 No. 1 (2026): Nomor 1 May
Publisher : Universitas Darul Ulum

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32492/jeetech.v7i1.7109

Abstract

This study examines the insulation resistance of underground conductors connecting 3-phase induction motors that drive pump machines. The results of the insulation resistance measurements were analyzed using the Polarization Index (PI) method and the Dielectric Absorption Ratio (DAR) method. There are 3 areas of conductor cables analyzed to calculate the remaining life of each conductor cable. For area 1, the remaining life of the inter-phase conductor cable is R-S 20.9 years, S-T 20.5 years T-R 20.8 years. Area 2, the remaining life of the inter-phase conductor cable is R-S 20.6 years, S-T 20.7 years T-R 21.1 years. For area 3, the remaining life of the inter-phase conductor cable is R-S 16.5 years, S-T 14 years T-R 15 years.
Analysis of Estimated Generator Lifespan at Siman Hydroelectric Power Plant Based on Insulation Resistance Testing Reza Sarwo Widagdo; Aris Heri Andriawan; R. Raafi Jalu Rahmadani Purbo Pamungkas
Jurnal Riset Rekayasa Elektro Vol. 8 No. 1 (2026): JRRE VOL 8 NO 1 JUNI 2026
Publisher : PROGRAM STUDI TEKNIK ELEKTRO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30595/jrre.v8i1.26974

Abstract

Insulation Resistance (IR) merupakan parameter penting yang digunakan untuk mengukur kemampuan bahan isolasi dalam menahan aliran arus listrik dengan memberikan hambatan tinggi terhadap aliran tersebut. Nilai IR yang rendah menunjukkan penurunan kualitas isolasi, yang dapat menyebabkan kebocoran arus dan berpotensi menimbulkan gangguan pada sistem kelistrikan. Faktor-faktor yang memengaruhi penurunan IR antara lain suhu lingkungan, kelembapan udara, kondisi ruangan yang tidak memadai, serta akumulasi debu dan kotoran. Penelitian ini bertujuan untuk menganalisis data tahanan isolasi yang diukur antara rotor–body dan stator–body pada generator AC berkapasitas 3,6 MW di PLTA Siman, yang dikelola oleh PT PLN Nusantara Power UP Brantas Siman. Fokus utama penelitian adalah memprediksi sisa umur operasional generator unit 1 dan 3 berdasarkan data pengukuran IR dari tahun 2018 hingga 2024. Metode yang digunakan melibatkan pendekatan matematis untuk memodelkan tren penurunan nilai IR seiring waktu. Berdasarkan referensi bahwa umur desain generator umumnya mencapai 30 tahun, hasil analisis menunjukkan bahwa rotor dan stator pada generator 1 memiliki sisa umur sekitar 10 tahun lagi dari tahun 2024. Sementara itu, pada generator 3, rotor diperkirakan masih memiliki umur pakai sekitar 21 tahun, dan stator sekitar 22 tahun. Estimasi ini didasarkan pada asumsi load factor rata-rata sebesar 77%, yang mencerminkan tingkat pemanfaatan generator selama periode pengamatan.
Analisis Voltage Flicker Akibat Starting Motor Induksi Tiga Fasa di Rumah Pompa Karah Surabaya Reza Sarwo Widagdo; Puji Slamet; Imam Suri Tauladan; Lutfi Agung Swarga; Bima Gilang Pratama; Izzah Aula Wardah
Jurnal ELEMENTER (Elektro dan Mesin Terapan) Vol 12 No 1 (2026): Jurnal Elektro dan Mesin Terapan (ELEMENTER)
Publisher : Politeknik Caltex Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35143/elementer.v12i1.7024

Abstract

This study aims to analyze the causes of voltage flicker during the starting process of a three-phase induction motor at the Karah Pump House in Surabaya. The use of high power induction motors is essential for supporting flood control systems; however, conventional starting methods such as Direct On Line (DOL) and Star-Delta can generate high inrush currents that negatively affect power quality. The research evaluates starting current characteristics, distribution system impedance, and the resulting voltage flicker based on IEC standards. The analysis shows that the DOL method produces greater voltage drop and voltage flicker compared to the Star Delta method. Although the Star-Delta method is able to reduce voltage disturbances, both methods still have the potential to exceed standard flicker limits if the distribution system is not equipped with adequate mitigation devices. Therefore, proper starting current control is an important factor in maintaining power quality and ensuring the stability of the pump house distribution system.
Application of fourier transform for early detection of bearing failures in electric motors Giovanni Dimas Prenata; Muhammad Alif Sofi Syariffudin; Reza Sarwo Widagdo
Journal Geuthee of Engineering and Energy Vol 5, No 1 (2026): Journal Geuthee of Engineering and Energy
Publisher : Geuthèë Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52626/joge.v5i1.69

Abstract

This study presents an analysis of bearing fault conditions in electric motors through stator current measurements and their transformation into the frequency domain. Measurements were conducted under two main bearing conditions: normal and damaged, each tested with three load variations (no load, generator load, and generator load with one lamp). The time-domain current waveforms showed minimal visual distinction between normal and damaged bearing conditions, making classification difficult. Therefore, the current data were transformed into the frequency domain using the Discrete Fourier Transform (DFT). The frequency domain analysis revealed that in normal bearing conditions, the frequency magnitude distribution was relatively stable and symmetrical, with low fluctuation in the frequency index range k = 0 to k = 10. In contrast, damaged bearing conditions exhibited larger and irregular fluctuations in frequency magnitude across different load levels, indicating a distinct signature of bearing failure. Consequently, frequency domain analysis proves to be an effective approach for detecting bearing faults based on the spectral characteristics of motor current signals.
Co-Authors Aris Heri Andriawan Aris Heri Andriawan Aris Heri Andriawan, Aris Heri Balok Hariadi Balok Hariadi Balok Hariadi Balok Hariadi Balok Hariadi Balok Hariadi, Balok Bima Bayu Santoso Bima Gilang Pratama Cahyo Pangestu Eriko Ramadhani, Mohammad Fajar Astuti Hermawati Fernanda Eka Saputra Gatut Budiono Gatut Budiono Gatut Budiono Giovanni Dimas Prenata Giovanni Dimas Prenata Giovanni Dimas Prenata Hartayu, Ratna Hartono, Elvianto Dwi I Made Kastiawan Robert Firmandus, I Made Kastiawan Imam Suri Tauladan Imam Suri Tauladan Indra Budi Hermawan Iswahyudi, Yolan Bagus Putra Ivan Maulana, Ade Izzah Aula Wardah Izzah Aula Wardah Kukuh Setyadjit Kukuh Setyadjit, Kukuh Kusmiyati Kusmiyati Lutfi Agung Swarga M Ary Heryanto Miftachun Nasichin Mohammad Eriko Ramadhani Mohammad Irfandi Novianto Muhammad Al Ahyudi Muhammad Alif Sofi Syariffudin Muhammad Sultan Abdai Habibullah Nababan, Wendi Antonius S Prenata, Giovanni Dimas Puji Slamet Puji Slamet Puji Slamet Puji Slamet Puji Slamet Puji Slamet Slamet Puji Slamet, Puji Putra, Roy Wibatsu R. Raafi Jalu Rahmadani Purbo Pamungkas Raden Mohamad Herdian Bhakti Rafli, Syah Achmad Amar Ratna Hartayu Ratna Hartayu Santoso Santoso Santoso Tasmono, Hadi Wahyu Setyo Pambudi Wardah, Izzah Aula