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Journal : Jurnal JEETech

Penggunaan Metode Rolling Sphere untuk Pengamanan Jaringan 150 kV dari Sambaran Petir Langsung Budi Sulistiawati, Irrine; Zaid Sahlan Shaufi, M; Made Wartana, I
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.
Pembuatan Prototype Pendeteksi Suhu dan Disinfektan Otomatis Pada Laboratorium Sotyohadi, Sotyohadi; Suryani F, Irmalia; Irrine Budi Sulistiawati; Aldya, Yoppy
Jurnal JEETech Vol. 5 No. 1 (2024): Nomor 1 May
Publisher : Universitas Darul Ulum

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32492/jeetech.v5i1.5103

Abstract

When the pandemic occurred in 2019, disinfectant sprayers were needed for prevention, measuring body temperature at the entrance. The pandemic has been end, we still have to do this to prevent and be disciplined in healthy living. The research here will create a prototype of an automatic temperature detection and disinfectant device at the laboratory door. The laboratory location was chosen because mobility in the laboratory was conducive, if a trial was carried out it would not disturb the activity on laboratory. This spraying tool designed includes an HC-SR04 sensor for detecting the height of disinfectant liquid, a TCRT 5000 sensor for detecting a person's forehead which will take temperature measurements to the MLX90614 sensor. The buzzer sounds when the MLX90614 sensor detects a temperature above 370C. Spraying disinfectant liquid uses 2 0.2mm spayer nozzles, and a proximity sensor when detecting people passing by the spray booth.
Implementasi Metode Artificial Bee Colony Untuk Penempatan Distributed Generator Pada Penyulang Rayon Tanjung Hidayat, Rahmat; Lomi, Abraham; Budi Sulistiawati, Irrine
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.
Perancangan Prototype Mesin Pengayak Pasir Semi Otomatis Menggunakan Photovoltaic Rue, Dionisia; 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 | Full PDF (739.493 KB) | 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 Iqbal Zajuli, Ahmad; Budi Sulistiawati, Irrine; Uji Krismanto, Awan
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.
Analysis of Load Diversion Due to AAACS Cable Breaks in the Bandar Jaya Lampung Distribution System Anam, M Khoirul; Wartana, Made; Budi Sulistiawati, Irrine
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.