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All Journal Jurnal Sustainable: Jurnal Hasil Penelitian dan Industri Terapan Jambura Journal of Electrical and Electronics Engineering Aviation Electronics, Information Technology, Telecommunications, Electricals, Controls (AVITEC)

Dina Mariani

Universitas Muhammadiyah Semarang

Author-ID : 2758206

Aerospace Engineering Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering

Published : 5 Documents Claim Missing Document

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Articles

Perancangan Perangkat Keras MPPT Metode Perturb and Observation Safarudin, Yanuar Mahfudz; Mariani, Dina; Hendrawati, Dwiana; Suwarti, Suwarti; Ali, Machrus; Nurrohmah, Hidayatul
Jurnal Sustainable: Jurnal Hasil Penelitian dan Industri Terapan Vol 7 No 2 (2018): Jurnal Sustainable: Jurnal Hasil Penelitian dan Industri Terapan
Publisher : Fakultas Teknik Universitas Maritim Raja Ali Haji

This study discusses the use of perturb and observation algorithm in the application of maximum power point tracking. The algorithm is simulated and tested hardware in two shading conditions. The results show the similarity result of hardware testing and simulation.

Rancang Bangun Antena Mikrostrip dengan Metamaterial CSRR untuk Penerima TV Digital Mariani, Dina; Safarudin, Yanuar Mahfudz
Jurnal Sustainable: Jurnal Hasil Penelitian dan Industri Terapan Vol 7 No 1 (2018): Jurnal Sustainable: Jurnal Hasil Penelitian dan Industri Terapan
Publisher : Fakultas Teknik Universitas Maritim Raja Ali Haji

Digital television technology has more benefit than analog television, for example several TV channel may included in one frequency channel. The changing from analog to digital televisions system require more innovative antenna parameter such as working frequency, bandwidth, return loss, VSWR, and gain. In other hand, the size of the antenna must be minimalized, so it can be integrated inside digital television. This research used metamaterial element of Complementary Split Ring Resonator (CSSR) method with negative permittivity that manufactured in the patch and Double Pole Ground Plane in the ground side. The antenna ad 478-694 operating frequency. Antenna design and simulation using CST (Computer Simulation Technology) Microwave Studio 2012. The result show that return-loss value < -10 dB, and VSWR â¤ 2 at 478-625 MHz range of frequency. Te value of gain is 3.27 dBi, it has 147 MHz bandwidth, and omnidirectional radiation pattern.

Rancang Bangun Solar Power Meter berbasis Arduino Uno dengan Data Logger untuk Pengukuran Insolasi dan Iradiasi Sinar Matahari Aris Kiswanto; Hanif Caesar Rachmad; Achmad Solichan; Arief Hendra Saptadi; Dina Mariani; Moh Toni Prasetyo
Aviation Electronics, Information Technology, Telecommunications, Electricals, Controls (AVITEC) Vol 4, No 1 (2022): February
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/avitec.v4i1.1192

In planning the installation of solar panels at a location, it is necessary to have solar irradiance data at that location. Solar irradiance data is obtained through direct measurements using a solar irradiance meter. Solar irradiance measuring instruments usually use one of three types of sensors, including thermopile (pyranometer), solar cells, or photodiodes. Each has advantages and disadvantages. The advantages of solar cell sensors are that they have a faster response to sunlight, are more in line with the production of energy produced by solar panels and have a more economical price compared to other sensors. Solar irradiance is directly proportional to the short-circuit current of the solar cell. The aim of this research is to design an Arduino Uno-based device to measure the insolation and irradiance of sunlight, equipped with a data logger to support data analysis. The solar power meter is designed using a solar cell reference with a short circuit current of 455 mA. The microcontroller board used is Arduino UNO ATmega328 while the current sensor used is WCS2801 with a sensitivity of 2mA/mV. Irradiation, current and insolation data are recorded and stored every minute using a datalogger to SD card with a capacity of 16 GB. the average of % error when testing the comparison of readings with photodiode-based solar power meter is 1.747%. The highest point of sun insolation is 5.56.kWh/m2 during three-day period of data logging and it is achieved when solar cell is positioned horizontally on the terrace.

Pengaruh Setting Tap Transformator Terhadap Profil Tegangan Pada Jaringan IEEE 14 Bus Radiktyo Nindyo Sumarno; Laily Muntasiroh; Dina Mariani
Jambura Journal of Electrical and Electronics Engineering Vol 4, No 2 (2022): Juli - Desember 2022
Publisher : Teknik Elektro - Universitas Negeri Gorontalo

Adanya jarak yang jauh dari pusat pembangkit ke beban pada sistem penyaluran tenaga listrik menyebabkan profil tegangan pada sisi terima atau sisi konsumen kadang turun kualitas tegangannya. Salah satu dari penurunan kualitas tegangan adalah penurunan level tegangan. Standar penurunan level tegangan pada setiap negara berbeda-beda tetapi secara umum penurunan level tegangan yang diijinkan kurang lebih tidak boleh lebih dari 10%. Tujuan penelitian ini adalah mengetahui pengaruh setting tap pada transformator untuk mengoptimalkan penurunan level tegangan pada sisi terima atau pada sisi konsumen. Dengan setting tap transformator diharapkan memperbaiki aliran daya dan profil tegangan pada masing-masing bus. Profil tegangan tidak hanya dipengaruhi oleh nilai setting tap transformator saja, tetapi bentuk dari jaringan juga berpengaruh. Hasil penelitian ini adalah dengan mengubah setting tap transformator dapat menghasilkan perubahan aliran daya dan profil tegangan. Setting tap yang paling optimal didapatkan pada nilai yang optimal, bukan nilai tap transformator yang semakin kecil atau semakin besar nilainya. Rata-rata penurunan level tegangan paling kecil diantara 3 skenario yang diterapkan didapatkan hasil yaitu rata-rata penurunan sebesar 5,137 % pada skenario dengan tap setting 0,95. The long distance from the power plant to the load on the electric power distribution system causes the voltage profile on the receiving side or the consumer side to sometimes decrease the quality of the voltage. One of the decrease in the quality of the voltage is a drop voltage. The standard drop in voltage level varies from country to country but in general the allowable drop in voltage level should not be more than 10%. The purpose of this study was to determine the effect of setting tap on the transformer to optimize the voltage level drop on the receiving side or on the consumer side. By setting the tap transformer, it is expected to improve the power flow and voltage profile on each bus. The voltage profile is not only affected by the transformer tap setting value, but the shape of the network also has an effect. The result of this research is that changing the transformer tap settings can result in changes in the power flow and voltage profile. The most optimal tap setting is obtained at the optimal value, not the smaller the transformer tap value or the larger the value. The smallest average drop voltage level among the 3 scenarios applied, the results obtained are an average decrease of 5.137% in the scenario with a tap setting of 0.95.

Rancang Bangun Monitoring Kecepatan Angin di Unimus Laily Muntasiroh; Radiktyo Nindyo Sumarno; Dina Mariani
Jambura Journal of Electrical and Electronics Engineering Vol 5, No 1 (2023): Januari - Juni 2023
Publisher : Teknik Elektro - Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jjeee.v5i1.15866

Peramalan cuaca memiliki peranan yang sangat penting dalam kehidupan terutama untuk penelitian berbasis renewable energy arena peramalan cuaca ke depan dapat memprediksi besarnya energi yang dihasilkan oleh suatu pembangkit berbasis fenomena alam seperti energi tenaga matahari dan energi tenaga angin. Sementara itu, peramalan cuaca menghadapi permasalahan seperti terbatasnya data variabel cuaca karena terbatasnya jumlah stasiun pengamatan cuaca, dan tingkat akurasi data yang masih rendah karena pengamatan dilakukan secara konvensional dan tidak dilakukan secara kontinyu. Automatic weather station (AWS) adalah salah satu solusi dari permasalahan tersebut karena AWS adalah stasiun meteorologi yang bekerja secara otomatis dan kontinyu baik dalam pengukuran dan pencatatan variabel cuaca sehingga memiliki tingkat akurasi yang tinggi. Penelitian AWS bertujuan merancang sistem pengamatan cuaca secara otomatis dan kontinyu sehingga data yang dikumpulkan oleh AWS dapat digunakan peramalan cuaca yang selanjutnya mampu mendukung program renewable energy. Data yang dihasilkan dari AWS yang dirancang ini cukup baik. Namun perlu dikalibrasi agar data dari AWS benar-benar akurat, berdasarkan data yang dihasilkan dari AWS pengambilan data yang ideal adalah per menit hingga setengah jam, dan desain bentuk sangkar AWS harus dirancang serta mungkin agar komponen tidak terkena cipratan air hujan. Namun tetap harus bisa membaca parameter kecepatan angin yang terukur secara akurat.— weather forecasting has a very important role in life especially for renewable energy-based research because future forecasting weather can predict the amount of energy generated by a generator based on a natural phenomenon of energy and energy generators. meanwhile, weather forecasting faces problems such as limitation of weather variable data because the number of weather observation stations are limited, and data accuracy levels still low because observations are conventionally performed and not conventionally done. automatic weather station (aws) is one of the solutions to those problems because aws is a meteorological station that works automatically and continuously in measuring and recording weather variables to have a high level. aws research objectives to design automatic and continuous weather observation system so that the data collected by aws can be used for weather forecasting which can support renewable energy programs. the data generated from this designed aws is very good. but it needs to be calibrated for the data from aws to be really accurate, based on data generated from aws the ideal data collection is per minutes to half hours, and the aws cage form design should be designed as well as possible to accurate the component. but still must be able to read accurately measured wind speed parameters.

Co-Authors A.A. Ketut Agung Cahyawan W Achmad Solichan Arief Hendra Saptadi Aris Kiswanto Dwiana Hendrawati Hanif Caesar Rachmad Laily Muntasiroh Machrus Ali Muhammad Chusaeni Nurrohmah, Hidayatul Radiktyo Nindyo Sumarno Yanuar Mahfudz Safarudin

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