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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 Jurnal JEETech BEES: Bulletin of Electrical and Electronics Engineering JURNAL POLI-TEKNOLOGI Pelita: Jurnal Pengabdian kepada Masyarakat
Reza Sarwo Widagdo
Department Of Electrical Engineering, Universitas 17 Agustus 1945 Surabaya, Indonesia
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Dentistry Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Neuroscience Nursing Public Health Social Sciences Transportation Veterinary Other

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Unbalanced Voltage Detection with Measurement Analysis Current Signature (MCSA) in 3-Phase Induction Motor Using Fast Fourier Transform (FFT) Widagdo, Reza Sarwo; Hermawati, Fajar Astuti; Hariadi, Balok
Jurnal Teknologi Elektro Vol 15, No 2 (2024)
Publisher : Electrical Engineering, Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/jte.2024.v15i2.003

Abstract

This paper presents a computational tool for detecting unbalanced voltage supplies in induction motors. For real-time applications, a technique based on the Fast Fourier Transform (FFT) was used to compute the desired component frequency. A Labview virtual instrument was used to implement the computer algorithm. When supply voltage unbalance appears identical, fault diagnosis using current signature analysis becomes more difficult. The detection percentage is calculated in the following conditions: balanced voltage, under voltage (10%), over voltage (5%), and mixed voltage (UV 5% + OV 5%). The unbalanced voltage waveforms are then analyzed using the classical Fast Fourier Transform (FFT). The results were detected at frequencies of 25 Hz and 75 Hz with a high amplitude of -30 db, when compared with healthy conditions at this frequency there was no spike in amplitude values. So by using the MCSA method with the fast Fourier transform approach analysis, it was successful in detecting voltage unbalance disturbances in 3 phase induction motors.
Harmonic Mitigation in Microgrid to Improve Power Quality Widagdo, Reza Sarwo; Andriawan, Aris Heri; Hartayu, Ratna
Jurnal Teknologi Elektro Vol 15, No 1 (2024)
Publisher : Electrical Engineering, Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/jte.2024.v15i1.003

Abstract

Microgrids are a technology that is developing quite rapidly and is attracting world attention in facing the energy and pollution crisis. There are three types of microgrid structures: AC, DC, and AC-DC hybrid microgrid. Because it consists of an AC bus and a DC bus, AC-DC hybrid microgrids can connect more types of Distributed Generation (DG) and have smaller converter losses, making it more economical and reliable than other types of microgrids. Due to the use of nonlinear devices, harmonic distortion in microgrids is a problem that needs to be solved. In this research, the AC-DC hybrid microgrid system is simulated using ETAP software. Then the characteristics of the distribution of harmonics in the system obtained from harmonic load flow simulations are also analyzed. Following the installation of the passive filter, Bus 1 and Bus 2 now suitable to the IEEE Std standards 519-1992 for harmonic values. After the application of the filter, Bus 1 refer a THD of 1.32%, while Bus 2 indicate a THD of 0.84%. In addition, the Individual Harmonic Distortion (IHD) for Bus 1 has dropped below 3% at the 5th harmonic and below 1.5% at the 13th harmonic. Besides that, Bus 2 IHD has decreased to less than 3% at the 11th harmonic and less than 1.5% at the 13th harmonic.
Analysis of Determining the Surge Arrester Protective Distance for Protection on 60 MVA Power Transformers at the 150 KV Main Substation in Surabaya Barat Reza Sarwo Widagdo; Gatut Budiono; Miftachun Nasichin
Jurnal Riset Rekayasa Elektro Vol 6, No 1 (2024): JRRE VOL 6 NO 1 JUNI 2024
Publisher : PROGRAM STUDI TEKNIK ELEKTRO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30595/jrre.v6i1.21555

Abstract

Because it provides electrical energy to customers that require protection from lightning interference, the substation is a crucial location. An electrical equipment's defense against lightning strikes is provided by a lighting arrestor. The arrester should be placed as near to the transformer as feasible for optimal protection. In order to restrict the installation of arresters to safeguard equipment, the maximum distance for arrester installation must be established. This study only looks at one 60 MVA transformer in the Surabaya Barat Main Substation, and its goal is to determine the minimum amount of error in transformer protection. Based on the maximum possible surge arrester surge arrester jarak with a power transformer at the Surabaya Barat Main Substation, the maximum possible surge arrester distance is 8,135 meters. Based on surge arrester capability, the transformer may be protected from over voltage since the maximum voltage that can occur is just 150.83 kV, with the maximum voltage remaining below the transverse impulse drop of around 650 kV.
Analysis of The Reliability Index of The Platuk Feeder Distribution System at PT. PLN ULP Kenjeran with Section Technique Method Reza Sarwo Widagdo; Gatut Budiono; Puji Slamet; Muhammad Sultan Abdai Habibullah
Jurnal Riset Rekayasa Elektro Vol 6, No 2 (2024): JRRE VOL 6 NO 2 DESEMBER 2024
Publisher : PROGRAM STUDI TEKNIK ELEKTRO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30595/jrre.v6i2.22920

Abstract

A high success rate is required to ensure the continuity of the supply of electricity, so that the distribution of electricity can maintain its availability continuously and have a reliable reliability value. Therefore, this study is intended to help evaluate the reliability of electric power distribution in plate feeders at PT. PLN ULP Kenjeran. The effect of failure on the system caused by equipment failure, as well as its impact on the load point will be evaluated using the section technique method. The results of the calculation show that the value of SAIFI is 2,699 times/year, SAIDI is 5.128 hours/year, and CAIDI is 1.9 hours/disturbance. Based on SPLN No. 68-2: 1986 concerning the reliability index, the value of SAIFI is 3.2 times/year, SAIDI is 21 hours/year, and CAIDI is 6.56 hours/disturbance, where the reliability index value can be categorized in accordance with SPLN standards and is considered reliable. Meanwhile, in the comparison of calculations between the section method and the method without sections, the reliability results were worse. Where the SAIFI value was 3.21112 times/disturbance (up 15.93%), the SAIDI value was 12.4056 hours/year (up 58.65%), and the CAIDI value was 3.9 hours/interruption (up 51.12%). Efforts to improve reliability by improving preventive maintenance and adding switching equipment such as LBS
Design and Installation of Lightning Arrester System at Karitas Yogyakarta Junior High School Widagdo, Reza Sarwo; Puji Slamet; Aris Heri Andriawan; Izzah Aula Wardah; Balok Hariadi; Iswahyudi, Yolan Bagus Putra
BERNAS: Jurnal Pengabdian Kepada Masyarakat Vol. 6 No. 1 (2025)
Publisher : Universitas Majalengka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31949/jb.v6i1.10612

Abstract

The Karitas Yogyakarta junior high school building is located in Yogyakarta, standing on an area of 4,750 m² with two buildings of two floors each. This building is located near swamps and settlements between people's houses, and is surrounded by plantations and rice fields at the back. This building is not equipped with a lightning distribution system, even though tall buildings need this system to protect against the danger of lightning strikes. This research designs a lightning distribution system according to applicable standards, and the results show that the density of lightning strikes per year is 20.28 km²/year with the largest equivalent coverage area of 8,297.045466 m². The highest probability of a lightning strike to a building is 0.086 with protection level I for all buildings. To protect the entire building, 9 lightning rods are needed and the grounding system requires 3 electrode rods.
Analysis of Leakage Current Calculation Through Thermal Failure Voltage on 150/20 kV Transformers in GIS Simpang, Surabaya Widagdo, Reza Sarwo; Andriawan, Aris Heri; Suri Tauladan, Imam; Ivan Maulana, Ade
Jurnal ELEMENTER (Elektro dan Mesin Terapan) Vol 10 No 2 (2024): Jurnal Elektro dan Mesin Terapan (ELEMENTER)
Publisher : Politeknik Caltex Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35143/elementer.v10i2.6366

Abstract

In the current test, leaks really need to be carried out at GIS Simpang. This test was carried out by strengthening the 20 kV incoming cable in the GIS Simpang 150/20 kV transformer bay. The impact of measuring this leakage current is to reduce the occurrence of leakage currents so that they are not too severe because this can determine how much the leakage current increases in the incoming cable. The trend test results were measured to determine the comparison between the leakage current in January and the leakage current measurement process at GIS Simpang. Based on the results of leakage current testing on transformer 1 and transformer 2 incoming 20 kV cables from several phases, it shows that the results of the leakage current trend in the cables have not increased significantly. However, from the calculation results listed, it can be seen from the comparison table that the results have increased during the calculation and have slight differences compared to the leakage current measurement results themselves. This is because from the calculation results, the cable temperature detection experienced a slight increase in the cable temperature as measured by thermovision to determine the thermal failure voltage. However, the cable is still suitable for operation because the temperature of the cable itself has a standard that does not exceed 150C for several measured cable phases.
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.
Development and Improvement of Catfish Cultivation Productivity in Balongmojo Village, Mojokerto Widagdo, Reza Sarwo; Hariadi, Balok; Wardah, Izzah Aula; Ardianik, Ardianik; Kusmiyati, Kusmiyati
Pelita: Jurnal Pengabdian kepada Masyarakat Vol. 5 No. 1 (2025): Pelita: Jurnal Pengabdian kepada Masyarakat
Publisher : Perkumpulan Kualitama Edukatika Indonesia

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

Abstract

Balongmojo Village is an entrepreneurial village in Mojokerto that has great potential in the livestock sector, especially catfish cultivation. The community service carried out aims to increase the productivity and sustainability of fisheries businesses in the village through the application of simple and environmentally friendly technology. Community service activities carried out include: (1) development of alternative feed based on agricultural waste (tofu dregs) for catfish; (2) making probiotics to improve catfish health; (3) managing catfish pond waste into liquid fertilizer; and (4) implementing an IoT-based automatic feeding system. The results of the study showed that the application of this technology was able to improve the quality of pond water and the growth of catfish. In addition, the use of organic waste also contributes to increasing soil fertility and reducing environmental pollution. Overall, this community service program has had a positive impact on improving the welfare of the Balongmojo Village community through increasing income, improving the environment, and developing community capacity in adopting modern technology.
Analysis of Fault Locations Using the Impedance Method on the GIS 150 kV Transmission Line Karang Pilang Surabaya Reza Sarwo Widagdo; Budiono, Gatut; Aris Heri Andriawan; Puji Slamet; Putra, Roy Wibatsu
Jurnal Poli-Teknologi Vol. 23 No. 2 (2024)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v23i2.6837

Abstract

Transmission lines often experience difficulties in determining the location of interference, due to the length of the transmission line. This interference can be secured by using relays, one of which is a distance relay, this tool secures the zone 1, zone 2 and zone 3 areas on the transmission line. Apart from relays, there is also a tool to determine the fault distance, namely a fault locator. These two tools are examples of protection on transmission lines. The method used in this research uses the impedance method to determine the distance the fault occurs and the settings on the distance relay. This technique is often used in electric power systems and is very effective for transmission lines, such as those in Karang Pilang, because of its ability to detect disturbances in transmission lines and equipment. Based on the analysis results, calculating the fault distance using the impedance method shows that the calculated value is very close to the distance measured by the fault finder. Specifically when a short circuit occurs, the impedance method calculates a distance of 14.35 km, while the fault locator measures it at 14.59 km with a margin of error of 1.5%.
Voltage Regulation and Power Loss Analysis on 500 kV EHV Transmission Line Krian-Grati Reza Sarwo Widagdo; I Made Kastiawan; Imam Suri Tauladan; Indra Budi Hermawan
International Journal of Electrical, Energy and Power System Engineering Vol. 8 No. 1 (2025): The International Journal of Electrical, Energy and Power System Engineering (I
Publisher : Electrical Engineering Department, Faculty of Engineering, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ijeepse.8.1.40-54

Abstract

The transmission system distributes electricity from power plants to substations before reaching consumers. During this process, obstacles such as power loss and voltage regulation occur, which must meet specific standards to prevent equipment damage. Power loss can result from factors like corona effects and insulator leakage. This study aims to analyze power loss and voltage regulation based on daily peak load data at 14:00 over 15 days, recording current and voltage values on the extra-high voltage Krian-Grati transmission network. This system uses ACSR Gannet conductors with a cross-sectional area of 392.84 mm² and a length of 79.41 km, having a resistance of 0.00086 Ω/km. Manual calculations for short transmission lines show a voltage difference between sending and receiving ends, with the sending voltage being slightly higher due to reactance, preventing a drastic voltage drop. Over 15 days in December 2024, voltage regulation did not exceed the standard maximum of <10%, with the highest recorded value at 4.7%. The highest power loss occurred on day 7 at 0.089 MW, while the lowest was on day 9 at 0.023 MW. The total power loss over 15 days reached 1.024 MW, with a daily average of 0.068 MW.
Co-Authors Aris Heri Andriawan Aris Heri Andriawan Aris Heri Andriawan, Aris Heri Balok Hariadi Balok Hariadi Balok Hariadi Balok Hariadi Balok Hariadi, Balok Bima Bayu Santoso Cahyo Pangestu Fajar Astuti Hermawati Fernanda Eka Saputra Gatut Budiono Gatut Budiono Gatut Budiono Hartayu, Ratna Hartono, Elvianto Dwi I Made Kastiawan 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 M Ary Heryanto Miftachun Nasichin Mohammad Irfandi Novianto Muhammad Al Ahyudi 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 Raden Mohamad Herdian Bhakti Rafli, Syah Achmad Amar Ratna Hartayu Ratna Hartayu Santoso SANTOSO SANTOSO Tasmono, Hadi Wahyu Setyo Pambudi Wardah, Izzah Aula