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All Journal JURNAL NASIONAL TEKNIK ELEKTRO Jurnal Ilmiah Flash JTERA (Jurnal Teknologi Rekayasa) TELKA - Telekomunikasi, Elektronika, Komputasi dan Kontrol Infotekmesin REKA ELKOMIKA: Jurnal Pengabdian kepada Masyarakat Jurnal Jaringan Telekomunikasi E-JOINT (Electronica and Electrical Journal Of Innovation Technology) JITEL (Jurnal Ilmiah Telekomunikasi, Elektronika, dan Listrik Tenaga) Jurnal Hilirisasi Technology kepada Masyarakat (SITECHMAS) Procedia of Social Sciences and Humanities Urecol Journal. Part E: Engineering Power Elektronik : Jurnal Orang Elektro Jurnal Ecotipe (Electronic, Control, Telecommunication, Information, and Power Engineering) Journal of Power, Energy, and Control
Riyani Prima Dewi
Politeknik Negeri Cilacap
Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering Social Sciences

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Distribusi Medan Listrik di Kompartemen Busbar Gas Insulated Switchgear (GIS) Menggunakan Charge Simulation Method Saepul Rahmat; Riyani Prima Dewi
E-JOINT (Electronica and Electrical Journal Of Innovation Technology) Vol. 1 No. 2: E-JOINT, Desember 2020
Publisher : Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/e-joint.v1i2.436

Abstract

Penelitian ini bertujuan untuk mengilustrasikan distribusi medan listrik di kompartemen busbar tipe gas insulated switchgear (GIS). Gas Insulated Substation (GIS) merupakan rangkaian peralatan gardu induk yang terpasang di dalam sebuah metal enclosure dan diisolasi oleh gas bertekanan yaitu Sulfur Hexafluoride (SF6). Dalam simulasi ini, diasumsikan titik referensi berada di sekitar contact pin busbar, dan titik muatan buatan berada disekitar kompartemen busbar. Simulasi dilakukan dengan menentukan titik referensi dan titik muatan bantuan untuk menghitung nilai muatan yang akan dicari yaitu contact pin. Titik muatan buatan ini terletak disembarang titik disekitar kompartemen busbar GIS dan akan dihitung nilai muatannya melalui metode simulasi muatan (charge simulation method) dengan bantuan komputasi Matlab
English Language Training for Local Community in the Tourism Site of Karang Talun Mangrove Forest, Cilacap, Central Java Betti Widianingsih; Dodi Satriawan; Fadhillah Hazrina; Novita Asma Ilahi; Riyani Prima Dewi; Devi Taufiq Nurrohman
Procedia of Social Sciences and Humanities Vol. 1 (2021): Proceedings of the 2nd International Conference On Intelectuals Global Responsibility
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/pssh.v1i.45

Abstract

Mangrove Forest which is located at Karang Talun village, Tritih Kulon sub-district, North Cilacap, Central Java has a various potentials to develop. Its development can be conducted by utilizing local community for participating to improve with mastery of English language. Thus, it is necessary to conduct empowerment of local community through English language training to create qualified ones who can support in tourism field. The purpose of this training is to improve their English language skill and increase their economy and be able to survive by being local tour guide in the New Normal. There were 15 participants consist of traders and some employees who work in Mangrove forest. It was conducted for three days and used some methods, namely preaching method i.e, giving theory and practice learning on each unit of learning and drilling and repetition method. In addition, they were given pre test and post test to evaluate each participant’s skill. From the result, the participant’s skill in pronunciation, vocabulary and practicing dialogue has improved, but it still needs more practices. Drilling and repetition method in learning activity has been success to be applied for participants
Persebaran Medan Listrik akibat Proses Exothermic Welding pada Kabel Tegangan Menengah 20 kV Riyani Prima Dewi; Saepul Rahmat
Infotekmesin Vol 12 No 1 (2021): Infotekmesin: Januari 2021
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v12i1.432

Abstract

In the 20 kV distribution system, insulated cables and conductors of fibrous and solid copper are used. Some problems on 20 kV system occur due to the line length of the lines. This obstacle occurs in the cable, mostly at the cable connection. To overcome this problem, a cable connection technique known as extothermic welding was developed. However, in this process, it is also undeniable that there is a thickening due to the contact which causes the uneven distribution of the electric field in the cable. To see the distribution of the electric field on the surface of the cable that was carried out by the exothermic welding process, a simulation was carried out in FEMM 4.2 with 3 final connection conditions, namely perfect jointing, jointing with a thickness of 0.5 mm and jointing with a thickness of 1 mm. As a result of this imperfect connection, the distribution of the electric field on the surface cable is uneven. There was a high electric field surge at the ends of the cable joint with a thickness of 1 mm and a reduced surge in the cable with a thickness of 0.5 mm at the joint. In a perfect connection, the distribution of the electric field occurs evenly.
Optimalisasi Kapasitas Rooftop PV System Skala Rumah Tangga di Perumahan Riyani Prima Dewi; Fadhillah Hazrina; Betti Widianingsih
Infotekmesin Vol 13 No 1 (2022): Infotekmesin: Januari, 2022
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v13i1.937

Abstract

One of the renewable energies in Indonesia is solar energy. The geographical condition of Indonesia, which is a tropical country, is one of the advantages it has for applying solar energy. The Indonesian government is gradually regulating the population system for Solar Power Plants (PLTS). The resident system is in demand because of the advantage that it can be connected to the PLN grid and used as an energy reserve. The installation of rooftop PLTS both in government buildings and on the roofs of houses has now become a common trend in the community as a form of participation in the use of New and Renewable Energy (EBT). Before installing PLTS Roofs, it is necessary to determine in advance how much capacity will be installed. This is also related to the community's question, what is the percentage of electricity costs if PLTS roofs are installed in bulk. These designs and calculations are generally carried out with the help of simulations. To discuss these problems, in this article, we will discuss a simulation of the potential for electrical energy generated from rooftop solar power plants in Cilacap Green Smart Living housing. The simulation was carried out with the help of the SolarGIS PV lunar device. Analytical calculations are carried out by software based on input of regional location and solar irradiation. SolarGis will calculate the daily output power generated by the rooftop PV mini-grid and the average monthly and yearly power. The simulation results show that one house with a daily energy requirement of 13 kWh by installing a rooftop PLTS with a capacity of 3 kWp, the demand for electrical energy imported from the PLN network to the house is only 7.8% in one year.
Simulation of Piko Hydro Power Generator Using Thread Turbine With 10 Watt Power Afrizal Abdi Musyafiq; Novita Asma Ilahi; Riyani Prima Dewi; Usman Barokah
Jurnal Jaringan Telekomunikasi Vol 12 No 2 (2022): Vol. 12 No. 02 (2022) : June 2022
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jartel.v12i2.329

Abstract

Renewable energy is one of the efforts to utilize electricity from renewable energy sources. Hydroelectric power is one of the plants that utilizes water as the main energy. Although the amount of energy is abundant, but in Indonesia the use of water as a power plant is still below 7%. This is due to the lack of human resources to manage water energy. Therefore, in this study, a simulation of a pico-hydro power plant using a screw turbine was designed which is expected to provide benefits. This tool is equipped with digital monitoring using Arduino Uno. Power monitoring on this tool uses the INA219 power sensor which is displayed on the LCD display. This tool uses a 12-24V DC generator. The turbine used is a screw turbine type. This pico-hydro power plant simulation is capable of turning on a load equivalent to 1 lamp of 10 watts/12 VAC with an inverter. The measurement of the current and voltage of the generator shows that the average current reaches 11.75 mA and the average voltage produced is 2.11 VDC and the power generated is 24.82 mW. The resulting step-up voltage measurement to charge the battery is 13.04 VDC and the current is 12.4 mA and the battery charging power is 0.161 watts.
APLIKASI NODEMCU ESP8266 DAN SENSOR SUHU UNTUK MONITORING SUHU PERMUKAAN PANEL SURYA MELALUI SMARTPHONE Riyani Prima Dewi; Uli Karyani; Rony Darpono
Jurnal Ilmiah Flash Vol 8 No 2 (2022)
Publisher : P3M- Politeknik Negeri Kupang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32511/flash.v8i2.954

Abstract

Potensi energi surya menurut energi outlook Indonesia (OEI) tahun 2019 sebesar 207,8 Gwp. Potensi tersebut merupakan yang terbesar diantara jenis energi terbarukan lainnya. Panel surya adalah peralatan utama sistem pembangkit listrik tenaga surya. Panel surya berfungsi untuk mengkonversikan energi cahaya matahari menjadi energi listrik. Kinerja sebuah panel surya dapat diketahui dengan cara mengukur parameter keluarannya seperti tegangan, arus dan daya. Kinerja panel surya dipengaruhi oleh beberapa faktor, diantaranya intensitas iradiasi matahari dan temperature kerja panel surya. Semakin besar iradiasi matahari yang ditangkap oleh panel surya makan semakin besar daya listrik yang dibangkitkan. Sekitar 15%-20% energi matahari yang diserap panel surya diubah menjadi listrik, sementara sisanya menghasilkan panas yang menyebabkan naiknya temperature permukaan panel surya. Kenaikan temperature ini justru akan menurukan daya listrik yang dihasilkan. Melalui pnelitian ini suhu panel permukaan panel surya akan diukur oleh sensor suhu DS18B20 kemudian dikirimkan ke NodeMCU ESP8622 sehingga dapat ditampilkan melalui aplikasi bylink di smartphone. Monitoring ini adalah upaya awal sebelum melakukan control terhadap suhu permukaan panel surya. Dari 3 hari percobaan, diketahui bahwa sistem monitoring yang dibuat berhasil berjalan dengan baik. Sensor suhu dapat membaca suhu permukaan panel dan aplikasi dapat menampilkan hasil pembacaan sensor. Terdapat selisih pembacaan suhu antara alat dengan alat ukur suhu sebesar 1,5 °C.
Unjuk Kerja Pengembangan Prototype Alat Pengering Padi Metode Thin Layer Afrizal Abdi Musyafiq; Riyani Prima Dewi; Purwiyanto Purwiyanto; Rafiq Subarkah
Infotekmesin Vol 14 No 1 (2023): Infotekmesin: Januari, 2023
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v14i1.1564

Abstract

Based on data from the Central Statistics Agency (BPS) for 2019, Cilacap Regency has an area of ​​14,000 hectares of rice farming land with a potential for harvesting up to 920,000 tons of rice, then the Binangun District area has 66.5 hectares of rice farming land with a potential of harvesting up to 32,000 tons of rice. Turning paddy into rice requires many processes, one of which is drying rice. Traditional rice drying takes a relatively long time, has an uneven moisture content, and is under an unstable temperature therefore it is necessary to develop a thin-layer method for drying rice. This study used the Rex C100 Thermocontrol as a drying temperature controller, used an Arduino Uno equipped with a BTS 7960 driver to adjust the stirring speed, and a YL-69 sensor to read the rice moisture content. Tests in this study were carried out using Inpari-32 rice with a mass of 2 Kg and a drying temperature of 50-80oC. The result of this study was that the relationship between temperature and time in drying was inversely proportional. The rice drying process uses the highest drying power of 654.5 watts while the lowest power is 467.5 watts. The lowest overall energy use was 2.05 x106 J and the highest energy was 2.60 x106 J. The highest drying rate was 0.50%bk/minute. Effective drying uses a temperature of 80oC with a time of 30 minutes to reach the store-dry rice and 70 minutes to reach the dry milled rice category.
Design and Build Electrical Gamelan as a Cultural Tourism Supporting Object Erna Alimudin; Arif Sumardiono; Zaenurrohman Zaenurrohman; Saepul Rahmat; Riyani Prima Dewi; Hera Susanti
Urecol Journal. Part E: Engineering Vol. 1 No. 2 (2021): August-Dec
Publisher : Konsorsium LPPM Perguruan Tinggi Muhammadiyah 'Aisyiyah (PTMA) Koordinator Wilayah Jawa Tengah - DIY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53017/uje.104

Abstract

Widarapayung Wetan, Binangun District, Cilacap Regency is an innovation village entrusted by the Regional Planning, Development, Research and Development Agency (BAPPEDA) of Cilacap Regency to the Cilacap State Polytechnic. The current partner's problem is the difficulty in introducing cultural tourism to tourists visiting Widarapayung Wetan Village. One of the cultural tourism potentials in Widarapayung Wetan Village is a traditional Javanese musical instrument, namely the gamelan. Currently, gamelan cultural activities in Widarapayung Wetan Village have been actively carried out on a regular basis based on the existing schedule of activities. Therefore, in order for gamelan to become a unique attraction, it is combined with electronic technology to become an electric gamelan. The electric gamelan can be used by visitors freely to learn to play the gamelan, while the existing original gamelan can be well preserved for rehearsals and performances. The electric gamelan made are saron and demung instruments. The saron and demung blades use acrylic material. When the acrylic blade is hit/beaten with a hammer, the piezoelectric sensor will receive vibrations when the blade is hit. The vibrations will be converted into electrical energy. The electrical energy will go through the Zener diode and 1 M? resistor, and will enter into IC 4051. IC 4051 in the system functions as a multiplexer that will take only one input according to the tone of the saron or demung instrument blades that are hit. The input will be passed to Arduino for processing. Arduino will issue a sound output in the form of a tone according to the blade that is hit. The electric gamelan tone is the original tone recorded by the saron and demung instruments. The two electric gamelan instruments, saron and demung, were tested together with wiyaga and the head of the Padhang Bulan Widarapayung Wetan art studio. The next activity was socialization with members of the Padhang Bulan art studio and the village apparatus of Widarapayung Wetan.
Pengujian Partial Discharge Konfigurasi Elektroda Jarum-Plat Pada Isolasi Udara Menggunakan Metode Elektrik; Detecting Impedance (RC) Alyssa Diva Mustika; Riyani Prima Dewi
Power Elektronik : Jurnal Orang Elektro Vol 9, No 2 (2020): POWER ELEKTRONIK
Publisher : Politeknik Harapan Bersama Tegal

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30591/polektro.v9i2.1991

Abstract

Partial discharge (peluahan sebagian) merupakan suatu fenomena yang terjadi pada tegangan tinggi. Pengukuran Partial Discharge (PD) sangat penting untuk mengetahui kondisi suatu isolasi. Pada percobaan yang dilakukan kali ini adalah pengukuran partial discharge menggunakkan metode detecting impedance (RC) dengan elektoda jarum-plat jarak 1 cm dan isolasi udara. Pengukuran Background Noise (BGN) dilakukan sebelum memulai percobaan untuk membedakan antara sinyal noise dengan sinyal PD yang akan diukur. Dari percobaan didapatkan hasil bahwa Partial Discharge Inception Voltage (PDIV)  adalah PD yang muncul pertama kali, dalam percobaan ini PD negatif muncul terlebih dahulu saat tegangan sumber 3.32 kV, dengan  rise time 0.1 µs dan fall time sekitar 0.25 µs. Saat tegangan sumber dinaikkan menjadi 4.3 kV, muncul PD negatif dengan rata rata jarak munculnya 83.6 µs muncul PD positif dengan rata rata jarak munculnya 89.5 µs. Kata kunci: Partial Discharge, Detecting Impedance, Isolasi Udara,  Elektroda Jarum-Plat.
Performance Process of Coil Winding Machine Based on Accuracy and Speed for Water Pump Motor Novita Asma Ilahi; Afrizal Abdi Musyafiq; Purwiyanto; Saepul Rahmat; Riyani Prima Dewi; Hendi Purnata
JURNAL NASIONAL TEKNIK ELEKTRO Vol 12, No 3: November 2023
Publisher : Jurusan Teknik Elektro Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jnte.v12n3.1101.2023

Abstract

A coil winding machine for water pumps using a monitoring system is a development of conventional winding tools. In regular coil winding tools, the coil winding process is done manually by rotating the handle as many times as the desired number of turns. The conventional winding tools have problems consisting of inconsistent working speed and operator-dependent winding continuity. Undesirable windings can occur with conventional winding tools, and the winding process requires close supervision. Therefore, the automatic coil winding machine was developed to optimize the coil winding process. The machine utilizes a DC motor to rotate the coil rolls, replacing the conventional roller handle function. This machining method uses an optocoupler sensor. The sensor serves to identify and evaluate the rotation of the roller. In addition, the ATmega8 microcontroller was applied to develop a system that can work automatically. Data collection involves varying the number of wire turns and the wire diameter dimension. The variation is necessary because the number of windings and wire diameter affect pump efficiency and performance. The data testing showed a machine accuracy rate of 98%, with a maximum difference of 1 coil winding in the results. This data confirms that the coil winding machine meets the tool's accuracy standards.
Co-Authors Afrizal Abdi Musyafiq Agus Setiawan Akbar, Mohammad Hafiz Alimudin, Erna Alyssa Diva Mustika Arif Sumardiono Betti Widianingsih Devi Taufiq Nurrohman Dodi Satriawan Erna Alimudin Erna Alimudin Fadhillah Hazrina Hazrina, Fadhillah Hendi Purnata Hera Susanti Illahi, Novita Asma Maemunah, Putri Maya Much. Sobri sungkar Muhamad Yusuf Muhammad Fakhruriza Pradana, Muhammad Fakhruriza Novita Asma Ilahi Purwiyanto Purwiyanto Purwiyanto Purwiyanto Purwiyanto Purwiyanto, Purwiyanto Rafiq Subarkah Robbihim Nurdiansyah Rony Darpono Rony Darpono Rony Darpono Rosmeriana, Fitriana Saepul Rahmat Saepul Rahmat Saepul Rahmat Saepul Rahmat, Saepul Sainudin Sainudin Sugeng Dwi Riyanto Sumardiono, Arif Uli Karyani Usman Barokah Widianingsih, Betti Zaenurrohman Zaenurrohman