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All Journal ELKHA : Jurnal Teknik Elektro Jurnal Ilmiah Kursor ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika JEEMECS (Journal of Electrical Engineering, Mechatronic and Computer Science) International Journal of Smart Grid and Sustainable Energy Technologies Jurnal Aplikasi Dan Inovasi Ipteks SOLIDITAS Jurnal Mnemonic Journal of Sustainable Technology and Applied Science Journal of Applied Smart Electrical Network and System (JASENS) ALINIER: Journal of Artificial Intelligence & Applications SinarFe7 Magnetika: Jurnal Mahasiswa Teknik Elektro Jurnal JEETech Nucleus Journal
Irrine Budi Sulistiawati
Institut Teknologi Nasional Malang
Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Social Sciences

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Analysis of System Performance Improvement Due to DG Integration on 20kV Feeder Ampelgading: Case Study Using ETAP Simulation Akbar, Fajar Maulana; Sulistiawati, Irrine Budi; Wartana, I Made
SinarFe7 Vol. 7 No. 1 (2025): SinarFe7-7 2025
Publisher : FORTEI Regional VII Jawa Timur

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Abstract

The 20 kV Ampelgading feeder, which is integrated with the Ampelgading Hydropower Plant (PLTA) as a Distributed Generation (DG), still faces technical challenges such as low voltage at the downstream part of the network and relatively high active power losses. These issues are mainly caused by the long distribution line of approximately ±180 km and the uneven load distribution, which results in suboptimal power quality. This research aims to analyze the impact of capacitor bank installation on the voltage profile and line losses of the distribution system. The method employed is a simulation using ETAP 21.0.1 software under peak load conditions as the basis of analysis. The improvement strategy is implemented through the Optimal Capacitor Placement (OCP) method, which recommends the installation of 220 kVAR capacitors at Bus 62, Bus 70, and Bus 80 as the optimal locations based on voltage sensitivity analysis. The simulation results indicate that the capacitor bank injection successfully improves the minimum bus voltage from 0.939 p.u. in the base case to 0.973 p.u., ensuring that all buses meet the lower voltage limit standard of 0.95 p.u. Furthermore, total active power losses are reduced from 93.36 kW to 83.37 kW, representing a decrease of approximately 10.7%. These findings demonstrate that the OCP method is an effective technical solution for optimizing the performance of distribution networks, particularly for feeders with geographical and load characteristics similar to the Ampelgading feeder.
The Frequency Stability Analysis Due to the Integration of 100 MW Solar Power Plant in the 150 kV Power System: A Case Study on the Impact of Large-Scale Solar PV Penetration on Grid Frequency Stability Davis, Vincentius; Abraham Lomi; Irrine Budi Sulistiawati
SinarFe7 Vol. 7 No. 1 (2025): SinarFe7-7 2025
Publisher : FORTEI Regional VII Jawa Timur

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Abstract

This study analyzes the impact of integrating a 100 MW Solar Power Plant (PLTS) (4×25 MW) on the frequency stability of the power system in the 150 kV transmission network in Bali. Simulations were conducted using DIgSILENT PowerFactory software employing Load Flow and RMS Simulation methods, covering disturbance scenarios such as load increases up to 60%, generator outages (Gilimanuk and Pemaron), and the effect of system protection settings. Results show that without proper protection settings, the integration of PLTS leads to a frequency drop below the minimum threshold (47.76 Hz) and a high Rate of Change of Frequency (ROCOF) (-1.21 Hz/s), which poses a risk of system disconnection. After configuring protective relays (underfrequency, undervoltage, and df/dt), the system stability improved; frequency was maintained within the 48–52 Hz range, and ROCOF decreased below -0.5 Hz/s. Therefore, large-scale PLTS integration can be safely implemented without compromising system stability, provided that appropriate protection configurations are in place. This research supports the implementation of clean energy in Bali and serves as a reference for integrating renewable energy sources into existing power systems.
The Effect of Cirata PV Power Plant Integration on Small-Signal Stability in the 500 kV Jawa-Bali System NORMALITA, NABILLYA ARGA; KRISMANTO, AWAN UJI; SULISTIAWATI, IRRINE BUDI
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 14, No 2: Published April 2026
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v14i2.195

Abstract

Renewable energy resources (RES) integration significantly affects power system stability, corresponding with the system to maintain stable conditions when the system is subjected with small disturbance. In this research, the effects of Cirata integration on the Jawa Bali 500kV power system network's dynamic and small signal stability are analyzed. The critical eigenvalue trajectories showed that increasing power injection from PLTS improved the stability, it is indicated by the movement of critical eigenvalues to the left away from the imaginary axis, from σ = -1.253 to σ = -1.255. And is followed by an increase in the system damping ratio from 10,85% to 10,88%. These results indicate that the integration provides a positive contribution to damping oscillations and increasing system stability when faced with small disturbances.
Perancangan Prototype Mesin Pengayak Pasir Semi Otomatis Menggunakan Photovoltaic Dionisia Rue; Irrine Budi Sulistiawati; Ni Putu Agustini
Jurnal JEETech Vol. 2 No. 1 (2021): Nomor 1 May
Publisher : Universitas Darul Ulum

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.48056/jeetech.v2i1.152

Abstract

The sand sieving system is generally still done manually which requires full human power for the sieving process. This is quite time consuming and the resulting fine sand mass is far from what is required for a construction project. Therefore the author made the idea of ​​​​designing a sand sieving machine that can be applied anywhere. This machine uses a driving system of a Brushless Direct Current electric motor with a capacity of 350W as the driving motor. Brushless Direct Current Motor is used because it has the advantage of a large starting torque, higher speed because it does not use a brush. As a source of electricity, new renewable energy solar panels with a capacity of 400Wp are used which are more environmentally friendly and efficient. This machine works when the solar panels supply a power source to the driving motor and then transmitted by the chain and gear to the sieve tube for the sieving process. This machine has a faster sand sieving process than manual sieving and the type of motor used is more efficient.
Evaluasi Penambahan Pembangkit Baru 0,5 MWp Terhadap Profil Tegangan Pada Sistem Distribusi Singosari Ahmad Iqbal Zajuli; Irrine Budi Sulistiawati; Awan Uji Krismanto
Jurnal JEETech Vol. 3 No. 1 (2022): Nomor 1 May
Publisher : Universitas Darul Ulum

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32492/jeetech.v5i1.3105

Abstract

The development of renewable energy in Indonesia has grown quite rapidly, one of which is PLTS. With this new power plant, it is hoped that the excessive use of fossil fuels will be reduced. in 2021 there a new PLTS operating in one of the universities, i.e at the Malang National Institute of Technology with a capacity of 0.5 MWp. The PLTS works on-grid into the Singosari distribution system through the Karangploso feeder so that the addition of a new generator of 0.5 MWp can cause changes in the voltage profile. the voltage profile itself is the voltage condition to be at the nominal voltage either when there is a change in load conditions or when power losses occur in the line with a standard allowable voltage profile of 0.95>V> 1.05 pu. The study used in this research is a power flow study with the Newton-Raphson method. This method is used to calculate the voltage profile on each bus of the power system either during the base case condition or when the system is integrated with PLTS 0.5 MWp. so that with the addition of a new power plant with a capacity of 0.5 MWp, it is necessary to evaluate the addition of a new generator with a capacity of 0.5 MWp to the voltage profile in the Singosari distribution system through the Karangploso feeder.
Penggunaan Metode Rolling Sphere untuk Pengamanan Jaringan 150 kV dari Sambaran Petir Langsung Irrine Budi Sulistiawati; M Zaid Sahlan Shaufi; I Made Wartana
Jurnal JEETech Vol. 4 No. 1 (2023): Nomor 1 May
Publisher : Universitas Darul Ulum

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32492/jeetech.v4i1.4104

Abstract

Lightning strikes can cause protection failure at substations such as equipment damage at substations due to insulation failure or what is known as flashover. Because of that, a lightning strike protection system is needed to minimize the occurrence of direct lightning strikes to equipment and buses at the substation. This study discusses the modeling of the protection of the substation from direct lightning strikes using the rolling sphere method at the Wonosari-pedan 150 kV substation using lightning rod poles. The calculation results show that with the configuration of a lightning rod as high as 21 m and the use of a ground wire of 17.8 m it meets the safe criteria for the height of the protected area in the case study of this research.
Implementasi Metode Artificial Bee Colony Untuk Penempatan Distributed Generator Pada Penyulang Rayon Tanjung Rahmat Hidayat; Abraham Lomi; Irrine Budi Sulistiawati
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.v5i2.5202

Abstract

Distributed Generation (DG) is a power plant that is spread over the power distribution network. In principle, electrical power output is generated by power plants located far from the load center and electrical power is transmitted to the load center through transmission and distribution networks. The longer the cable from the power plant or substation, the lower the voltage at the end load. Sub-optimal DG placement and size can result in increased power losses and affect the system voltage profile. In addition, suboptimal generation capacity can lead to voltage instability, reduced system security, and potential impacts on system frequency and emissions. Therefore, this study will use the Artificial Bee Colony (ABC) method to determine the optimal DG capacity and location. In the base case condition, the power losses in the system are 118 KW and 99 Kvar. Power losses after the installation of 1 DG active power loss becomes 37.4 KW and reactive power loss becomes 31.65 Kvar. Placement of 2 DGs reduces active power loss to 17 KW and reactive power loss to 15 Kvar. While the placement of 3 DG reduces active power loss to 33 KW and reactive power loss to 28 KVar.
Analysis of Load Diversion Due to AAACS Cable Breaks in the Bandar Jaya Lampung Distribution System M Khoirul Anam; Made Wartana; Irrine Budi Sulistiawati
Jurnal JEETech Vol. 6 No. 2 (2025): Nomor 2 November
Publisher : Universitas Darul Ulum

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32492/jeetech.v6i2.62002

Abstract

The electric power distribution system is the final component that is connected to consumers in the energy transmission chain. This distribution system is particularly vulnerable lightning strikes that can cause conductor cables to break. The 20 kV distribution network of the Rambutan Feeder, under Bandar Jaya ULP in Lampung, experienced a lightning strike that resulted in the disconnection of the AAACS cable, leading to a power outage in the service area. The geographical conditions of the Lampung region, which has a high isokeraunic level, contribute significantly to the likelihood of lightning-related disturbances. Based on real data, this study analyzes the impact of disturbances caused by lightning strikes on Feeder and proposes mitigation strategies to minimize the effects of resulting power outages. Analysis using ETAP shows that the recomendation to divert the load sypply to the arimbi feeder is able to maintain the bus voltage at a rating of 19,86 KV.
Pembuatan Prototype Pengereman Turbin Pada Pembangkit Listrik Tenaga Bayu Dengan Menggunakan Dummy Load Resistor Agil Herlambang Rizki; Irrine Budi Sulistiawati; Bima Romadhon Romadhon PDP
Nucleus Journal Vol. 3 No. 1 (2024): May
Publisher : Universitas Darul Ulum

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32492/nucleus.v3i1.3103

Abstract

This study aims to develop a prototype braking system for wind turbines used in wind power plants by utilizing a dummy load resistor. The background of this research is the necessity for an effective braking system to control the speed of wind turbines, especially under extreme wind conditions, which can cause damage to the system and electrical components. The designed braking system uses a dummy load resistor to reduce the rotational speed of the turbine by dissipating excess electrical energy as heat. Tests were conducted to evaluate the effectiveness of the system under various wind conditions and to measure performance parameters such as turbine speed stability and protection of electrical components. The results show that the uses of dummy load resistors are effective in diverting excess voltage with a set point of 14 volts, and at 300 rpm using voltage sensors, proximity sensor and MOSFETs as voltage control, which will be diverted to the dummy load resistor system. Thus, this research makes a significant contribution to the development of wind power technology, particularly in terms of safety and operational efficiency.
Co-Authors Abraham Lomi Adi Soepriyanto Agil Herlambang Rizki Ahmad Iqbal Zajuli Akbar, Fajar Maulana Aldya, Yoppy Alfarid Hendro Yuwono Angga Budi Prastyo Anto Nugroho Ardyono Priyadi Ardyono Priyadi Aryuanto Soetedjo Aventus Wagur Awan Uji Krismanto Bima Romadhon Romadhon PDP Davis, Vincentius Decky Satrio Pamungkas Dionisia Rue Eko Nurcahyo F. Yudi Limpraptono farhan_esa_maulaya Fikri, Mohammad Alfa Zaidanil Fransiscus R B N Kabosu Gaguk Sukowiyono Hendra Prayoga Huda, Muhamad Tri Agus Latifatul Huda Hunip Setio I Made Wartana Ical Toka, Kristianus Iqbal Zajuli, Ahmad Irmalia Suryani F Kukuh Maulana Arhami Leci, Geraldi M Khoirul Anam M Khoirul Anam, M Khoirul M Zaid Sahlan Shaufi M. Rizal Sanaky Made Wartana Made Wartana, I Maizul Anwar MATURBONG, RIRIN KATARINA Muhammad Riza Anugrah Muhammad Riza Anugrah Muljanto, Widodo Pudji MULYANTO, WIDODO PUDJI Ni Putu Agustini Ni Putu Agustini Ni Putu Agustini NORMALITA, NABILLYA ARGA Nova Zainur Rifki Pandu Fajar Satria Pandu Fajar Satria Putu Agustini, Ni Rahmansyah, Aldi Rahmansyah Rahmat Hidayat Rahmat Hidayat Rizki, Agil Herlambang Romadhon PDP, Bima Romadhon Rue, Dionisia Rusilawati Rusilawati Salam, Muhammad Farhan Sotyohadi Sugeng Priyanto, Sugeng Sunnu Wahyu Setiawan Suryani F, Irmalia Susanti, Debby Budi Wartana, Made Widodo Pudji Muljanto Willy Armando Wabes WIYOGA, BELDA ROSALIE PUTRI yohanes moa Yoppy Aldya Yusuf Ismail Nakhoda Zaid Sahlan Shaufi, M Zulfani , Dyah Erika Mining Aurora