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All Journal Jurnal Teknologi Terapan Jurnal Nasional Pengelolaan Energi MigasZoom Indonesian Journal Of Energy And Mineral Prosiding Seminar Nasional Teknik Elektro, Sistem Informasi, dan Teknik Informatika (SNESTIK) Electrician : Jurnal Rekayasa dan Teknologi Elektro Jurnal INFOTEL
Astrie Kusuma Dewi
Politeknk Energi Dan Mineral Akamigas
Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Mechanical Engineering

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Analisis aliran Beban pada Sistem Tenaga Listrik di PT XYZ Pujianto; Astrie Kusuma Dewi; Anton Mulyono
Jurnal Nasional Pengelolaan Energi MigasZoom Vol. 3 No. 1 (2021): Evaluasi berkelanjutan untuk penghematan energi
Publisher : Pusat Pengembangan Sumber Daya Manusia Minyak dan Gas Bumi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37525/mz/2021-1/262

Abstract

Dalam sistem tenaga listrik, studi aliran beban sangat diperlukan dalam perhitungan maupun simulasi sebagai acuan dalam perbaikan sistem agar lebih optimal. Analisis aliran beban dapat dilakukan dalam berbagai metode, antara lain dengan menggunakan perangkat lunak, salah satunya ETAP Power Station yang mendukung dalam hal studi aliran beban. Untuk proses pembangkitan listrik di PT.XYZ ditemukan beberapa pengaturan yang kurang tepat sehingga beberapa titik ditemukan adanya over voltage, under voltage, dan overload pada jaringan distribusi listrik. Selain itu, rencana pemindahan Generator D3512B2 untuk area X menjadi pembahasan utama, solusi yang diambil dengan penyambungan jalur 20kV dari PLN diharapkan dapat menyalurkan tanpa ada gangguan pada distribusi listrik seperti yang sudah disimulasikan. Berdasarkan perhitungan keekonomian diprediksi dapat menghemat biaya operasi sampai dengan 50% dan mendapatkan Pay Back Period dalam jangka waktu 78 hari.
Design of Monitoring System Distribution Water Based on IoT Feras Ferdinan Sabono; Umi Yuliatin; Roni Heru Triyanto; Astrie Kusuma Dewi
Indonesian Journal of Energy and Mineral Vol. 2 No. 1 (2022): Indonesian Journal of Energy & Mineral
Publisher : Politeknik Energi dan Mineral Akamigas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53026/IJoEM/2022/2.1/997

Abstract

Based on the reference journal states that the increase in water use activities in urban areas for the lower Golan is 169.11 liters per person per day, and in the upper middle class it is 247.36 liters for each person per day, this cannot be denied that many activities use large amounts of water. large, so that from this problem, a distribution system and regular water monitoring is needed so that there is no wastage of water. In this research, a water distribution monitoring system has been designed, using Wemos D1 R1 and Blynk as interfaces. The purpose of this system design is to be able to design and realize a simple system for flow monitoring. This system consists of a water flow sensor YF-201 water flow sensor, Wemos D1 R1 Microcontroller, Blynk HMI to display measurement data that will detect the flow rate of water, then the water discharge value will be converted by Wemos D1 R1. After that Wemos D1 R1 will control and communicate with Blynk using the com port to display the measurement results in the form of numbers which are the final display of the flow rate measurement. For the experimental results of the prototype water distribution monitoring system tool, which is designed to show that the measurement system has been able to run quite well. accuracy 97.42 – 99.98%
AUDIT ENERGI PADA BANGUNAN GEDUNG – STUDI KASUS PADA GEDUNG PERKANTORAN Chalidia Nurin Hamdani; Astrie Kusuma Dewi; Asepta Surya Wardhana; Primaldi Anugrah Utama; Radityo Cahyo Yudanto; C.F. Pradana Swandaru
Jurnal Teknologi Terapan Vol 9, No 1 (2023): Jurnal Teknologi Terapan
Publisher : P3M Politeknik Negeri Indramayu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31884/jtt.v9i1.391

Abstract

Energy usage is constanly increasing with regard to technology invention, equipment number growth and people growth. So, we have to do energy conservation. The first step in energy conservation implementation is energy audit. By doing energy audit, we are able to identify energy saving potential in audit object. In this paper, we provide a study case of energy audit in office building in Indonesia performed on 2018. This office building has an area of approximately 1.120 m2 with Rp 10,889,658 of average of energy use per month. Energy audit had performed on electricity system, air conditioning system, lighting system dan energy management system. Energy usage profile had been identified and modeled using linear approximation so the main factor of energy usage can be known. Energy saving potential that can be obtained is about 2.358 kWh (30,45%) with Rp 2,431,359 of cost saving approximation per month or Rp 29,176,308 per year.
Pengaturan Kandungan Nutrisi pH secara Otomatis pada Hidroponik menggunakan Mikrokontroller Asepta Surya Wardhana; Astrie Kusuma Dewi; Fauzi Neaja Wiranto; Natasya Aisah Septiani; Javier Umar Ravy
Prosiding Seminar Nasional Teknik Elektro, Sistem Informasi, dan Teknik Informatika (SNESTIK) 2023: SNESTIK III
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/p.snestik.2023.4402

Abstract

Tanaman hidroponik secara umum memerlukan pertumbuhan dengan menggunakan tambahan nutrisi X dan nutrisi Y maupun campuran antara nutrisi X dan Y. Untuk mendapatkan hasil panen yang maksimal diharuskan untuk menjaga nutrisi dan pH pada sumber air pengairan hidroponik. Pengendalian dan pengukuran pH sangat tergantung pada operator (manusia), apabila terjadi permasalahan pada proses maka pertumbuhan tanaman menjadi terganggu dan menyebabkan produktivitas tanaman menurun. Jadi dibutuhkan sebuah alat yang dapat memonitoring dan mengoreksi bila terjadi perubahan kadar asam (pH) pada tandon air selama 24 jam. Sistem otomatisasi diperlukan untuk pertumbuhan tanaman hidroponik dengan standar pH 6-7, pengaturan pH pada air dikendalikan oleh sensor pH yang dapat dimonitoring oleh mikrokontroler sewaktu-waktu jika pH air yang bercampur nutrisi tidak mencapai nilai pH standar yang dibutuhkan oleh tanaman. Mikrokontroler akan merespon pembacaan dari sensor pH dan mengatur pompa air asam atau pompa air basa bekerja dan akan mengisi larutan pH yang dibutuhkan dengan air tangki untuk mencapai nilai pH yang standar. Alat ini juga dapat dimonitoring melalui aplikasi Blynk, dari aplikasi Blynk ini kita akan mendapatkan notifikasi apabila tandon air asam ataupun tandon air basa habis. Besar harapan alat ini dapat membantu para petani hidroponik untuk mempermudah saat menjaga kestabilan pH pada sumber air.
Mesin Penyiraman Otomatis pada Tanaman Cabai dengan Modul Nodemcu ESP8266 Berbasis Internet of Things (IoT) Asepta Surya Wardhana; Astrie Kusuma Dewi; Hellmy Fadhil Airlangga; Natasya Aisah Septiani Septiani; Javier Umar Ravy
Prosiding Seminar Nasional Teknik Elektro, Sistem Informasi, dan Teknik Informatika (SNESTIK) 2023: SNESTIK III
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/p.snestik.2023.4263

Abstract

Teknologi ini dirancang untuk menyiram tanaman cabai secara otomatis. Budidaya cabai memerlukan perhatian khusus karena jika tanaman ini tidak memiliki kondisi yang menguntungkan, mereka tidak akan berkembang. Misalnya, jika tingkat kelembaban tanah tidak mencukupi, tanaman cabai tidak akan tumbuh subur. Tingkat kelembaban tanah yang dianjurkan untuk tanaman cabai adalah 60% sampai 70%. Sensor soil moisture akan mendeketsi kelembapan tanah secara real time. Bila kelembapan tanah pada tanaman cabai tidak sesuai dengan set point (60% dan 70%) maka microcontroller akan merespon hasil pembacaan sensor moisture dan mengatur pompa dari tandon air untuk aktif selama 10 detik. Pada tandon air juga terdapat sensor ultrasonik HC – SR04 yang berguna untuk mendeteksi ketinggian air tandon dan akan memberikan input-an ke microcontroller apabila air pada tandon air habis maka microcontroller akan merespon input-an sensor ultrasonik HC – SR04 dan mengatur pompa untuk mati sampai air pada tandon air terisi kembali. Sistem penyiram tanaman yang dapat dimonitor pada LCD (Liquid Cristal Display) dan perangkat Mobile dengan aplikasi Blynk yang dapat menampilkan kondisi tanah apakah lembab, normal, atau kering sesuai dengan pembacaan dari sensor kelembaban tanah serta dapat memberikan notifikasi apabila air pada tandon air habis.
Prototype of cascade level and flow control system on steam drum based on IoT Astrie Kusuma Dewi; Andhika Darussalam; Pujianto Pujianto; Chalidia Nurin Hamdani; Natasya Aisah Septiani
JURNAL INFOTEL Vol 15 No 2 (2023): May 2023
Publisher : LPPM INSTITUT TEKNOLOGI TELKOM PURWOKERTO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20895/infotel.v15i2.936

Abstract

In the industrial field, boiler functions to heat a fluid in the form of water, the boiler has a part which is a steam drum which has a function to produce steam for use for utility needs, and a steam turbine, in practice, the state of the water level must be maintained at the desired value or set. point so that carryover does not occur, and in overcoming these problems a control system is needed. This control works by comparing the value of the sensor and the set point, then gives an output signal to correct that to speed up the response, so it is necessary to use a cascade control configuration that adds an input flow control as a slave control. In this prototype, the cascade level control serves to control the level process. In addition, the human-machine interface has been designed to monitor processes in real-time. In addition, this prototype is equipped with an Internet of Things system that functions for the monitoring process as long as it is always connected to the internet. To run the control system, parameter control is needed, in this project the PID parameter setting uses the Ziegler-Nichols method with the parameter Kp level=20.25; Ki level = 1.51; Kp Flow = 5.14; Ki flow = 2.2.
Kesesuaian Minat Mahasiswa dengan Judul Tesis Mahasiswa Menggunakan Metode Fuzzy Mamdani Astrie Kusuma Dewi; Adhistya Erna Permanasari; Indriana Hidayah
Electrician : Jurnal Rekayasa dan Teknologi Elektro Vol. 10 No. 1 (2016)
Publisher : Department of Electrical Engineering, Faculty of Engineering, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/elc.v10n1.188

Abstract

Intisari — Pemilihan minat tesis yang sesuai dengan minat mahasiswa dapat membantu mahasiswa dalam proses pengerjaan tesis. Selain minat, dibutuhkan juga motivasi sebagai dorongan dari dalam diri mahasiswa. Data dalam penelitian ini menggunakan kuesioner minat dan kuesioner motivasi. Data dari kuesioner tersebut diolah menggunakan fuzzy Mamdani. Dalam penelitian ini fuzzy mamdani digunakan untuk mengetahui kesesuaian minat tesis mahasiswa, dari 80 mahasiswa sebagai responden diketahui bahwa sebanyak  51,06 % mahasiswa memiliki minat yang sesuai dengan proposal tesis dan sekitar 48,94 % mahasiswa memiliki minat yang tidak sesuai dengan proposal tesis mahasiswa. Kata kunci — Minat dan motivasi, Logika Fuzzy, Metode Fuzzy Mamdani Abstract — Selection of interest in accordance with the thesis that the interest of students to help students in the process of thesis. In addition to interest, it needed a boost of motivation as the students themselves. The data in this study using questionnaires interest and motivation questionnaire. Data from the questionnaires were processed using fuzzy Mamdani. In this study, fuzzy mamdani used to determine the suitability of interest thesis students, 80 students as respondents note that as many as 51.06% of the students have an interest in accordance with the thesis proposal and approximately 48.94% of the students have an interest that is not in accordance with the student's thesis proposal. Keywords— Interest and motivation, Fuzzy Logic,  Fuzzy mamdani method.
RANCANG BANGUN SOFTWARE PERHITUNGAN UNTUK SISTEM METER TURBIN DENGAN METODE FUZZY Astrie Kusuma Dewi; Silvia Mareta; Chalidia Nurin Hamdani
Electrician : Jurnal Rekayasa dan Teknologi Elektro Vol. 16 No. 1 (2022)
Publisher : Department of Electrical Engineering, Faculty of Engineering, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Custody transfer is an important activity in the oil and gas industry which requires high accuracy. In keeping the metering system in an accurate condition, dynamic testing is needed as an evaluation of the custody transfer metering system. In carrying out dynamic testing, software is needed so that calculations will be more accurate and minimize errors. Calculation software in the market is currently quite expensive and does not cover all the calculation needs needed in the field, it is necessary to make calculation software that suits your needs and has a low price. With this software, it is hoped that it can simplify the calculation process and speed up troubleshooting time when there is a measurement deviation because the data read in the flowcomp can be directly proven for its accuracy. In finding a correction factor, a method is needed that is able to determine the value between two known values. Fuzzy method is considered capable of solving these problems. Sugeno fuzzy method is suitable for use in this study because it has an output in the form of a constant. After testing several random samples, the results of the Sugeno fuzzy method have the greatest error on the MPMS API table, namely 0.00004. When compared with the interpolation method, the fuzzy method has the same results as the value generated by the interpolation method. So it can be concluded that the fuzzy method can be used as a calculation method in finding the correction factor.
Co-Authors Adhistya Erna Permanasari Andhika Darussalam Anton Mulyono Azis Asepta Surya Wardhana Asepta Surya Wardhana C.F. Pradana Swandaru Chalidia Nurin Hamdani Chalidia Nurin Hamdani Dwiana Hendrawati Fauzi Neaja Wiranto Feras Ferdinan Sabono Ferro Aji Hellmy Fadhil Airlangga Indriana Hidayah Javier Umar Ravy Javier Umar Ravy Mochamad Rizky Pradana Muhammad Ramdhan Natasya Aisah Septiani Natasya Aisah Septiani Natasya Aisah Septiani Natasya Aisah Septiani Septiani Primaldi Anugrah Utama Pujianto Pujianto Pujianto Radityo Cahyo Yudanto Roni Heru Triyanto Silvia Mareta Umi Yuliatin Wendy Triadji Nugroho