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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
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Analysis of Capasitor Bank Installation for Power Quality Improvement at PT. Sunrise Steel Reza Sarwo Widagdo Widagdo; Gatut Budiono; Mohammad Irfandi Novianto
Wahana Vol 75 No 2 (2023): Wahana Tridarma Perguruan Tinggi
Publisher : LPPM Universitas PGRI Adi Buana Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36456/wahana.v75i2.7522

Abstract

The large number of inductive loads used, namely 3-phase induction motors and welding machines, has caused a low power factor in the electrical system at PT. Sunrise Steel. In this industry there are 2 production sites for coated steel named Continous Galvalume Line 1 and Continous Galvalume Line 2. There are 6 transformers that supply power to the two places, but there are 2 transformers that have a very low power factor, where Transformer 1 (Continous Galvalume Line 2) a capacitor bank has been installed but the power factor is still low, which is 0.67 and Transformer 3 (Continous Galvalume Line 1) is 0.66. The addition of Capacitor Bank is of course very much needed to increase the value of the power factor in the two electrical systems. This research targets an increase in power factor to 0.98, where Transformer 1 (Continuous Galvalume Line 2) requires the addition of a 17.831 uF capacitor and Transformer 3 (Continous Galvalume Line 1) requires a 2948,81 uF capacitor using an automatic compensation technique. The compensation method used in both is the global compensation method, a capacitor will be installed on each main LVMDP. ETAP Power Station software is used to simulate the results of installing capacitor banks.
Performance Analysis of SF6 Circuit Breakers: Case Study of Rungkut 150 kV Main Substation Reza Sarwo Widagdo; Puji Slamet; Fernanda Eka Saputra
Wahana Vol 76 No 1 (2024): Wahana Tridarma Perguruan Tinggi
Publisher : LPPM Universitas PGRI Adi Buana Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36456/wahana.v76i1.8487

Abstract

Electrical energy transmission plays an important role as a means of distributing electrical energy from generation to distribution and consumers. During the process of distributing electrical energy, disturbances such as short circuits often occur. Therefore, there needs to be safeguards so that the distribution process runs well. One of the safety equipment in the main substation is the circuit breaker. Circuit breaker is a mechanical switch or switching equipment that can close, transmit or disconnect the load current under normal conditions or under abnormal conditions such as a short circuit. Problems with circuit breaker can be detrimental and disrupt the operation of the electric power system. If the circuit breaker does not work properly when a disturbance occurs, the disturbance can damage other devices and cause instability in the distribution of electrical power. Therefore, regular testing and maintenance must be carried out to ensure the circuit breaker is suitable for operation. The testing stages include SF6 pressure, insulation resistance, contact resistance, and circuit breaker contact simultaneity. The test results show SF6 pressure with a value above the circuit breaker nameplate, insulation resistance with a value above 150 MΩ, contact resistance with a standard value below 50 µΩ, and contact simultaneity testing is carried out by calculating the delta time when close and open on each phase in below the value of 10 ms. In accordance with the results of SF6 gas pressure testing, insulation resistance, contact resistance and circuit breaker synchronization at the 150 KV Rungkut Bay Line Main Substation, Surabaya Selatan, it is in operational condition.
Analysis of the Effectiveness of Using Active Filters and Passive Filters in Reducing Harmonics Using a Power Simulator (PSIM) at PT. Delta Jaya Mas Reza Sarwo Widagdo; Puji Slamet Slamet; Cahyo Pangestu
Wahana Vol 76 No 2 (2024): Wahana Tridarma Perguruan Tinggi
Publisher : LPPM Universitas PGRI Adi Buana Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36456/wahana.v76i2.9283

Abstract

The Extruder Machine at PT. Delta Jaya Mas plays a critical role in the production of rubber and PVC hoses, as well as molded rubber products. This process involves the use of a 3-phase synchronous motor and Variable Frequency Drive (VFD), which can introduce harmonics into the electrical system due to their non-linear load. These harmonics can cause waveform distortion, leading to decreased efficiency and potential equipment damage. To overcome this issue, a comprehensive research is being conducted utilizing the Power Simulator (PSIM) program to analyze the impact of harmonics and evaluate the effectiveness of both active and passive filters in reducing these unwanted distortions. Initial assessments of the Extruder SDP panel revealed elevated levels of Total Harmonic Distortion (THD) in the current phases, while the voltage phases remained within acceptable thresholds. Simulation results demonstrated that the active filter was able to significantly reduce THD to an impressive 1.57%, showcasing its effectiveness in harmonic mitigation. On the other hand, the passive filter also proved beneficial, albeit to a slightly lesser extent, achieving a reduction in THD to 34.07%. This ongoing research not only aims to assist PT. Delta Jaya Mas in implementing appropriate harmonic reduction measures for their Extruder Machine but also seeks to advance the understanding of harmonic analysis and filter applications.
Coordination Analysis of Overcurrent Relays (OCR) and Directional Ground Relays (DGR) for Transformer Protection at Segoromadu Substation, Gresik Puji Slamet; Reza Sarwo Widagdo; Aris Heri Andriawan; Muhammad Al Ahyudi
Wahana Vol 76 No 2 (2024): Wahana Tridarma Perguruan Tinggi
Publisher : LPPM Universitas PGRI Adi Buana Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36456/wahana.v76i2.9805

Abstract

Transformers are vital components in the distribution of electrical energy that are susceptible to overcurrent and short circuit disturbances, especially in substations. In this study, an analysis of the coordination of Over Current Relay (OCR) and Directional Ground Relay (DGR) was conducted to protect transformers in the Segoromadu Substation, Gresik. This analysis aims to determine the optimal settings of OCR and DGR, as well as to test the reliability of protection rather than safety equipment. Measurements were made by calculating the short circuit current of three phases, two phases, and one phase to ground, as well as the relay time settings. The simulation results show that the right settings on OCR and DGR can improve the reliability and safety of the substation protection system in maintaining a stable energy supply. These findings provide an important contribution in improving the performance of the protection system and can be a reference for the development of protection systems in other substations.
Analysis of the Insulation Quality of 1000 kVA Distribution Transformer Oil Due to Aging at PT. Bambang Djaja Surabaya Reza Sarwo Widagdo; Puji Slamet; Aris Heri Andriawan; Bima Bayu Santoso
Wahana : Tridarma Perguruan Tinggi Vol 77 No 1 (2025): Wahana Tridarma Perguruan Tinggi
Publisher : LPPM Universitas PGRI Adi Buana Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36456/wahana.v77i1.10008

Abstract

The reliability of transformer insulation is a crucial factor in preventing damage that can lead to fatal accidents and serious disruptions in electrical systems. Aging insulation can cause performance degradation in transformers, necessitating a comprehensive evaluation to detect potential damage at an early stage. This research aims to evaluate the condition of transformer insulation using several testing methods, namely Breakdown Voltage (BDV) and Dissolved Gas Analysis (DGA). Among these methods, DGA is the main focus due to its ability to detect internal disturbances early, such as heat release, arcing, and overheating. Dissolved gas analysis in insulating oil provides critical information to detect anomalies, allowing preventive measures to be taken before the damage becomes more severe. In this study, testing data from both BDV and DGA methods were obtained through experiments and observations on transformers that have been in operation for a certain period. The obtained data were thoroughly analyzed and compared with international standards, such as IEEE and IEC, to identify potential failures, such as insulation degradation, overheating, or abnormal energy release. The analysis results show that combining several testing methods, particularly DGA, can provide accurate results in detecting potential damage at an early stage. This research makes an important contribution to transformer management, especially in the implementation of predictive maintenance, to enhance the safety, reliability, and operational efficiency of transformers.
Study of ACSR Conductor Characteristics on Power Losses and Voltage Drop in 500 kV Transmission Lines: A Case Study at Krian-Ungaran Puji Slamet; Reza Sarwo Widagdo; Balok Hariadi
Wahana : Tridarma Perguruan Tinggi Vol 77 No 1 (2025): Wahana Tridarma Perguruan Tinggi
Publisher : LPPM Universitas PGRI Adi Buana Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36456/wahana.v77i1.10315

Abstract

The transmission system is the stage of electricity distribution from the generator to the substation to the distribution system. During the process of distributing electric power, there is a voltage regulation that occurs whether it is still within safe limits or not because if it exceeds safe limits it can cause damage to electrical equipment. Power losses can occur due to several factors, namely insulator leaks, distance, and others. One of the issues identified is the use of ACSR (Aluminum Conductor Steel Reinforced) conductors, which, although commonly used due to their mechanical strength and relatively low cost, also contribute to significant power losses due to their resistance and susceptibility to environmental effects such as temperature rise. The transmission network in this study uses ACSR type conductor wire with a Dove type and a cross-sectional area of 327,77 mm² over a distance of 251 km, with a resistance value of 0.1024 Ω/km. The manual calculation method was employed by recording current and voltage values that change every day for one month. The conclusion obtained from manual calculations of power losses and voltage regulation is that the percentage of voltage regulation on transmission lines for one month remains within the safe limit, where the maximum allowed is 10 percent. However, despite the voltage being regulated within limits, significant power losses were recorded, with the highest loss being 16,79 MW and the lowest 6,01 MW. The total power losses on the transmission network for one month reached 272,92 MW, with an average of 9,09 MW per day. These findings highlight the drawback of using ACSR conductors in long-distance transmission lines, emphasizing the need for consideration of alternative conductor types or loss-reduction strategies to improve overall transmission efficiency.
Technical Support for Maintaining Solar Power Plants in Plantation Areas, Sajen Village, Mojokerto Widagdo, Reza Sarwo; Ardianik, Ardianik; Imam Suri Tauladan; Slamet, Puji; Andriawan, Aris Heri; Hariadi, Balok
BERNAS: Jurnal Pengabdian Kepada Masyarakat Vol. 6 No. 3 (2025)
Publisher : Universitas Majalengka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31949/jb.v6i3.13233

Abstract

Sajen Village is predominantly an agricultural and livestock-based community. However, the lack of sufficient electricity poses a significant challenge to the development of these sectors. Solar Power Generation Technology offers a sustainable solution due to the village’s potential for utilizing solar energy. To ensure the successful implementation of solar power plant, it is essential to provide the local community with adequate knowledge and skills in its operation, maintenance, and care. This community service program aims to introduce solar power plant to the residents of Sajen Village while equipping them with the necessary technical expertise. The program consists of several key activities: training on solar power plant operation and maintenance, an introduction to the principles of solar power plant design and installation, and evaluation sessions to assess the community's understanding. These activities are designed to empower participants to independently operate and maintain solar power plant systems. The final stage involves evaluating the program’s effectiveness by measuring the participants’ comprehension of solar power plant concepts, operations, and maintenance techniques. This initiative is expected to enhance the sustainability of Sajen Village's agricultural and livestock sectors by addressing the electricity shortage through renewable energy solutions. It also promotes community independence in managing solar power systems for long-term benefits
Estimated Life Loss of a 3-Phase Induction Motor Based on Insulation Resistance Test at PT. Delta Jaya Mas Widagdo, Reza Sarwo; Slamet, Puji; Andriawan, Aris Heri
Jurnal Teknologi Elektro Vol 15, No 3 (2024)
Publisher : Electrical Engineering, Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/jte.2024.v15i3.001

Abstract

At the company PT. Delta Jaya Mas induction motors are very necessary to run machines in the production process. An induction motor consists of a rotor and stator with insulation resistance. Insulation Resistance (IR) is a measure of the ability of the insulation in the winding to withstand current. Insulation resistance testing is needed to determine the condition of the insulation which is influenced by humidity, environmental temperature and operating time. This test procedure is regulated in the IEEE Std 43-2000 standard. The use of an appropriate insulation tester and routine testing is important to maintain the insulation resistance value and prevent accidents and damage to 3-phase induction motors. Testing is carried out when the motor is turned off to avoid component damage. Polarization index data is taken by testing the insulation resistance for 1 to 10 minutes. The test was carried out on the insulation resistance of a three-phase induction motor with a power of 75 kW which showed a value of 515 MΩ to 602 MΩ when it was in a damaged condition with one phase having a value of 0 MΩ indicating a short or short circuit condition. After repair the motor has an insulation resistance of 2000 MΩ. After operating for 3 months the decrease in resistance that occurred per month was 11.6 MΩ and the polarization index test was 3.5 MΩ. An insulation resistance of 2000 MΩ can be expected to last for 14 years if degradation occurs consistently.
Prediction of Transformer Age Based on Temperature Due to Loading Using Linear Trend Method: Case Study of 60 MVA Transformer Widagdo, Reza Sarwo; Slamet, Puji; Ubaidillah, Muhammad
Journal of Applied Electrical Engineering Vol. 8 No. 1 (2024): JAEE, June 2024
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jaee.v8i1.6999

Abstract

Power Transformers are one of the core equipment found in substations. Every year the need for electricity increases, so that the transformer can work optimally, the loading must also be considered. According to IEC 354, if the transformer is underload it is 100% stable at conditions around 20℃ and the winding temperature is 98℃, but if the ambient temperature is more than 20℃ then the life of the transformer will be reduced. In this research, the loading data used is a 60 MVA power transformer for 2020-2022, specifically to predict the age of the transformer from the load increase factor in the coming year using the linear trend method. The linear trend method aims to predict the burden in the following year and every year the burden increases. an increase of 2%. To find out the results of load forecasting, the prediction in 2030 has a life loss value of 1.2 p.u or the estimated remaining life of the power transformer is 1 year 6 months with a load of 88.64%.
Simulation of Speed Control on a PMSM Using a PI Controller Widagdo, Reza Sarwo; Hariadi, Balok; Wardah, Izzah Aula
Jambura Journal of Electrical and Electronics Engineering Vol 6, No 1 (2024): Januari-Juni 2024
Publisher : Electrical Engineering Department Faculty of Engineering State University of Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jjeee.v6i1.22287

Abstract

In order to manage the speed of a permanent magnet synchronous motor drive system, a practical approach for a PI controller has been developed and put into practice in this study. The adopted approach, which also preserves the proportional integral controller's straightforward structure and features, significantly enhanced the performance of the prior proportional integral controller. The final PI controller delivers quick and precise response, strong noise rejection, and minimal sensitivity to permanent magnet synchronous motor parameter fluctuations. The findings demonstrate that the suggested controller may provide best performance in terms of accuracy, parametric variation, and load torque disturbance when entering a proportional value of 0,013 and an integral value of 16,61. The proposed method has been exhaustively tested under various circumstances. The proposed solution not only possesses attributes like simplicity and ease of implementation for real-time, but also stability and effectiveness.
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