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All Journal International Journal of Electrical and Computer Engineering International Journal of Power Electronics and Drive Systems (IJPEDS) International Journal of Reconfigurable and Embedded Systems (IJRES) International Journal of Applied Power Engineering (IJAPE) Jurnal Teknik Elektro Majalah Ilmiah Teknologi Elektro TELKOMNIKA (Telecommunication Computing Electronics and Control) Jurnal Teknik Elektro Jurnal technoscientia Sinergi Jurnal Informatika dan Teknik Elektro Terapan Jurnal Sains Teknologi dan Lingkungan (JSTL) Jurnal Otomasi Kontrol dan Instrumentasi SENTIA 2015 Jurnal Nasional Komputasi dan Teknologi Informasi Jurnal Pengabdian Magister Pendidikan IPA Jurnal Gema Ngabdi Vocatech : Vocational Education and Technology Journal Dielektrika : Jurnal Ilmiah Kajian Teori dan Aplikasi Teknik Elektro Jurnal Teknik Elektro dan Komputasi (ELKOM) Jurnal Abdi Insani MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Jurnal Teknik Industri Terintegrasi (JUTIN) Bulletin of Computer Science and Electrical Engineering (BCSEE) JURNAL TEKNOLOGI TECHNOSCIENTIA Jurnal Pengabdian Kepada Masyarakat (JPKM) Tabikpun Journal of Renewable Energy, Electrical, and Computer Engineering Jurnal Bakti Nusa Jurnal Karya Pengabdian Teknik Mesin Jurnal Pepadu Jurnal Pendidikan dan Pengabdian Masyarakat Jurnal Rekayasa elektrika JEITECH (JOURNAL OF ELECTRICAL ENGINEERING AND INFORMATION TECHNOLOGY) Jurnal Solusi Masyarakat Dikara Majalah Ilmiah Teknologi Elektro
I Made Ari Nrartha
University Of Mataram
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Transient response mitigation using type-2 fuzzy controller optimized by grey wolf optimizer in converter high voltage direct current Ginarsa, I Made; Nrartha, I Made Ari; Muljono, Agung Budi; Zebua, Osea
International Journal of Electrical and Computer Engineering (IJECE) Vol 14, No 2: April 2024
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijece.v14i2.pp1274-1286

Abstract

Long high voltage direct current (HVDC) transmission link is commonly used to transmit electrical energy via land or under-sea cable. The long HVDC avoids reactive power losses (RPL) and power stability problems (PSP). On the contrary, the RPL and PSP phenomena occur in long high voltage alternative current-link (HVAC) caused by the high reactive component in the HVAC-link. However, the HVDC produces a high and slow transient current response (TCR) on the high value of the up-ramp rate. Interval type-2 fuzzy (IT2F) control on converter-side HVDC is proposed to mitigate this TCR problem. The IT2F is optimized by grey wolf optimizer (GWO) to adjust input-output IT2F parameters optimally. The performance of IT2F-GWO is assessed by the minimum value of integral time squared error (ITSE), peak overshoot, and settling time of the TCR. The IT2FC-GWO performance is validated by the performance of IT2F control that is optimized by genetic algorithm (IT2F-GA) and proportional integral (PI) controller. Simulation results show that the IT2F-GWO performs better with small ITSE, low peak overshoot, and shorter settling times than competing controllers.
Strategy to reduce transient current of inverter-side on an average value model high voltage direct current using adaptive neuro-fuzzy inference system controller Ginarsa, I Made; Ari Nrartha, I Made; Budi Muljono, Agung; Sultan, Sultan; Nababan, Sabar
International Journal of Electrical and Computer Engineering (IJECE) Vol 12, No 5: October 2022
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijece.v12i5.pp4790-4800

Abstract

Growing-up of high voltage direct current (HVDC) penetration into modern power systems (PS) makes difficulty on the PS operation. The HVDC produces high and slow transient current (TC) at start-time, especially for higher up-ramp rate (Urr>20 pu/s). Its condition makes the HVDC cannot be linked and synchronized into the PS rapidly. A strategy to reduce the TC is proposed by an adaptive network based fuzzy inference system (ANFIS) control on inverter HVDC-link to cope up this problem. The ANFIS control is tuned with the help of conventional control in various train-data by using offline mode. Response of ANFIS scheme is improved by suppressing TC at the values of 3.75% for the both phases (A and C), and 3.95% for phase B, for the Urr=30 pu/s. While the conventional control achieved at 9.1% for the both phases (A and B), and 9.2% for the phase C. The ANFIS control gives shorter settling time (0.553 s) than the conventional control (0.584 s) for all phases. The proposed control is more effective than the conventional control at all the scenario.
Battery charger regulator with fully controlled return 15 V/5 A in uninterruptible power supply Hasibuan, Arnawan; Daud, Muhammad; Hutagalung, Rizki Shobirin; Kartika, Kartika; Nrartha, I Made Ari; Almunadiansyah, Rizky
International Journal of Applied Power Engineering (IJAPE) Vol 13, No 1: March 2024
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijape.v13.i1.pp45-51

Abstract

Fully controlled rectifier and BCR. The battery charge regulator (BCR) is the most important unit of an uninterruptible power supply (UPS) device. The BCR uses a 15 V/5 A transformer to lower the voltage so as not to overload the BCR components. Full control using four thyristors serves to supply voltage to the BCR, while the BCR serves to regulate battery charging. Forcing the battery to be charged at a constant voltage with the same current results in shorter battery life. Battery charging through the BCR is set to match the battery voltage, then allowing the BCR to control it by adjusting the phase voltage to 13.5 V for high voltage discharge (HVD) and 10.5 V for low voltage discharge (LVD). By using an IC Regulator combined with a relay as a voltage breaker for a fully charged battery, it will automatically disconnect to avoid overcharging the battery. Based on the performance test results of a fully controlled rectifier system using thyristors and BCR on a 12V/5Ah battery, the output voltage is as a fully controlled 12 V rectifier, the BCR switch can charge the internal battery in minutes with a current that varies between 2.1 A to 0.1 A.
Assessing transformer health through analysis of dissolved gases in cooling oil Nisworo, Sapto; Hasibuan, Arnawan; Isa, Muzamir; Nrartha, I Made Ari; Jannah, Misbahul; Muhammad, Muhammad
International Journal of Applied Power Engineering (IJAPE) Vol 13, No 4: December 2024
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijape.v13.i4.pp1014-1020

Abstract

Gases can form within the insulation system for various reasons while a transformer is in operation. If these gases are not promptly and properly managed, they can negatively impact the transformer's performance. Using the dissolved gas analysis (DGA) method to identify and assess the type and quantity of dissolved gases in transformer oil can uncover potential issues within the transformer. This information is crucial for guiding preventive maintenance and necessary repairs. Dissolved gas analysis testing was conducted by extracting transformer oil samples to identify signs of disturbances in the transformer based on the dissolved gas content. This research was conducted at the Paiton plant operations and maintenance services division. The condition of transformers was assessed by analyzing dissolved gases using the Rogers ratio method. Results indicate that the transformer at Paiton 9 is in good condition but overheating has occurred and requires treatment. Conversely, the transformers at Paiton 1 and 2 are in poor condition, showing signs of electrical faults and excessive heat. Despite several attempts to add inhibitors and conduct frequent testing, the transformers remained in poor condition, necessitating their replacement or repair.
EKONOMIC DISPATCH SISTEM KELISTRIKAN LOMBOK MENGGUNAKAN METODE CHAOTIC ANT SWARM OPTIMIZATION (CASO) Yuristia, Rana; Nrartha, I Made Ari; Muljono, Agung Budi
DIELEKTRIKA Vol 1 No 1 (2014): DIELEKTRIKA
Publisher : Jurusan Teknik Elektro Fakultas Teknik Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (153.576 KB) | DOI: 10.29303/dielektrika.v1i1.6

Abstract

Permasalahan umum yang dihadapi operasi ekonomis sistem tenaga listrik adalah bagaimana menghasilkan pembagian beban secara optimal dengan biaya operasi minimum, yang umum dikenal sebagai Economic Dispatch (ED). Penelitian ini dilakukan pada PT. PLN (Persero) Wilayah NTB pada satu jam operasi tanggal 31 Januari 2010 pukul 06:00 WITA, dengan jumlah generator yang aktif sebesar 57,14% dari jumlah total generator yang ada sebagian besar menggunakan pembangkit thermal, diesel. Penyelesaian ED pada penelitian ini menggunakan metode optimasi Chaotic Ant Swarm Optimization (CASO) yang dibandingkan dengan hasil optimasi operasi PLN dan hasil optimasi metode Algoritma Genetika (AG). Hasil pembangkitan total yang dihasilkan dengan metode optimasi CASO diperoleh penghematan biaya sebesar Rp 3.181.550/jam (1,982%) dibandingkan dengan hasil optimasi operasi PLN, dan mengalami peningkatan biaya sebesar Rp 2.521.870/jam (1,603%) dibandingkan hasil optimasi metode AG.
PERANCANGAN ENERGI METER DAN ANALISIS KARAKTERISTIK BEBAN LISTRIK BERBASIS RASPBERRY PI: Design of Energy Meter and Electrical Load Characteristics Analysis Based on Raspberry PI Sasmita, Hendra; Nrartha, I Made Ari; Suksmadana, I Made Budi
DIELEKTRIKA Vol 5 No 1 (2018): DIELEKTRIKA
Publisher : Jurusan Teknik Elektro Fakultas Teknik Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (779.144 KB) | DOI: 10.29303/dielektrika.v5i1.130

Abstract

Analisis karakteristik beban listrik membutuhkan informasi besaran-besaran listrik seperti tegangan, arus, faktor daya, energi, dan kandungan harmonisa. Informasi tersebut dapat diperoleh dengan energi meter. Energi meter untuk kebutuhan informasi tersebut dirancang menggunakan sensor tegangan (ZMPT101B), sensor arus (SCT013-010V), Analog to Digital Convertion (MCP3008) dan mikrokontroler (RaspberryPi2). Metoda Fast Fourier Transform adalah metoda untuk menghitung kandungan harmonisa . Bentuk gelombang dan spektrum harmonisa ditampilkan pada layar. Hasil penelitian ini menunjukkan error rerata sensor arus adalah 2,36% dan sensor tegangan adalah 0.17%. Karakteristik beban rumah tangga seperti laptop mempunyai karakteritik yang sama dengan beban resistor-kapasitor tetapi beban laptop memiliki THDi yang tinggi. Beban heater, hair dryer, kipas angin dan kulkas memiliki karakteritik yang sama dengan beban resistor-induktor. Semua informasi hasil pengukuran dapat ditampilkan pada layar dan disimpan pada SDCard.
SISTEM MONITORING DAN KONTROL PENERANGAN JALAN UMUM MENGGUNAKAN JARINGAN KOMUNIKASI LoRa BERBASIS INTERNET OF THINGS (IoT) Taufik, Taufik; Misbahuddin, Misbahuddin; Nrartha, I Made Ari
DIELEKTRIKA Vol 8 No 2 (2021): DIELEKTRIKA
Publisher : Jurusan Teknik Elektro Fakultas Teknik Universitas Mataram

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

Abstract

Penerangan jalan umum merupakan salah satu elemen atau komponen yang harus ada pada setiap jalan, berfungsi sebagai penerangan jalan pada malam hari demi keselamatan pengendara. Penerangan jalan umum sebagian besar menyala pada malam hingga pagi hari secara terus menerus tanpa sistem pengawasan dan pengendalian yang memakan listrik. Oleh karena itu, dalam penelitian ini dirancang sebuah sistem monitoring dan kontrol penerangan jalan umum menggunakan jaringan komunikasi LoRa berbasis internet of things (IoT) yang digunakan untuk memonitoring besaran tegangan, arus, daya, frekuensi, dan faktor daya dan juga untuk mengontrol lampu penerangan jalan umum dalam hal ini menghidupkan dan mematikan saja. Ini menggunakan jaringan komunikasi modul ESP32 - LoRa – OLED sebagai mikrokontroller, pengirim data dan penerima data dalam jarak yang jauh, modul relay sebagai saklar, sensor PZEM 004T untuk pengambilan data tegangan, arus, daya, frekuensi, dan faktor daya, menggunakan platform IoT yaitu myDevices Cayenne sebagai penampil data pada laptop atau smartphone melalu protokol MQTT Broker selama masih terkoneksi dengan jaringan internet. Pengujian alat terdiri dari pengujian sensor tegangan AC, pengujian sensor arus AC, pengujian koneksi LoRa, pengujian IoT dan pengujian sistem keseluruhan. Hasil pengujian yang didapatkan sensor tegangan AC memiliki keakuratan yang baik dengan nilai % error rata – rata sebesar 0.30% untuk sensor 1 tegangan AC PJU 1, 0.17% untuk sensor 2 tegangan AC PJU 2 dan sensor arus AC sebesar 1.22% untuk sensor 1 arus AC PJU 1, 1.41% untuk sensor 2 arus AC PJU 2. Kemudian koneksi LoRa dari jarak 100 m sampai 1000 m untuk penggujian line of sight, data LoRa pengirim masih bisa diterima oleh LoRa penerima sedangkan penggujian koneksi LoRa non line of sight dengan 10 titik lokasi yang berbeda, LoRa penerima masih bisa menerima data dari LoRa pengirim, namun delay waktu pengiriman data terbilang lama.Untuk penggujian IoT dengan menggunakan platform IoT myDevices Cayenne data dapat ditampilkan dan dikontrol. Kemudian pada pengujian sistem keseluruhan bahwa sistem yang dibuat telah mampu memonitor dan mengontrol penerangan jalan umum melalui laptop atau smartphone dengan jaringan komunikasi LoRa selama terhubung dengan internet.
Rancang Bangun Sistem Pemantauan Daya Listrik Berbasis Android Menggunakan Teknologi React Native Hamzan, Muhammad Abdulloh; Nrartha, I Made Ari; Wiryajati, I Ketut
DIELEKTRIKA Vol 9 No 1 (2022): DIELEKTRIKA
Publisher : Jurusan Teknik Elektro Fakultas Teknik Universitas Mataram

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Abstract

Jumlah pemakaian energi listrik dapat diperoleh dari alat ukur kWh meter pada sisi pelanggan listrik. Penyedia daya litrik (PT PLN Persero) telah memasang kWh meter analog dan digital untuk maksud tersebut. Jumlah pemakaian energi listrik dari kWh meter yang ada saat ini tidak dapat dipantau secara real time. Penelitian ini bertujuan untuk mendesain sistem pemantauan real time pengunaan daya listrik konsumen dari jarak jauh. Sistem yang didesain adalah sistem kWh meter berupa hardware dan software yang mendukung koneksi ke smartphone dan berbasis android. Frame work sistem android yang digunakan adalah react native dan database firebase. Hasil uji kWh meter berbasis android dengan teknologi react native menunjukkan kesalahan ukur tegangan, arus, daya dan faktor daya adalah 0,82%, 0%, 0% dan 1.56%. Kesalahan ukur ini dari perbandingan hasil ukur alat ukur referensi. Pemakaian daya tercatat setiap 5 detik, sehingga setiap 5 detik data dikirim ke smartphone untuk update hasil pengukuran. Kontrol on/off peralatan listrik dapat dilakukan jarak jauh via smartphone.
ANFIS-based MPPT Controller Design on Boost Converter to Improve Photovoltaic System Performance Nrartha, I Made Ari; Alfian, Muhammad Rolan; Zubaidah, Teti
DIELEKTRIKA Vol 9 No 2 (2022): DIELEKTRIKA
Publisher : Jurusan Teknik Elektro Fakultas Teknik Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/dielektrika.v9i2.310

Abstract

The efficiency of the photovoltaic system is very low ranging from 9-17% in areas with low irradiation while the investment costs are quite high. In addition, the power output of the photovoltaic system is highly volatile due to changes in irradiation due to weather and cloud movement, and temperature change. This research proposes the MPPT method based on ANFIS in the photovoltaic system for transient behavior analysis and system efficiency improvement. The results of the proposed method were compared with the MPPT Perthub & Observe (P&O) method. Each MPPT method was applied to a boost converter connected to a photovoltaic module with a capacity of 150 Wp to adjust the duty cycle using Simulink simulation in MATLAB. The irradiation and temperature data for 3 consecutive days were from Saturday to Monday, September 4 to 6, 2021. The simulation results show that the transient time of ANFIS MPPT is 6.23 times faster than that of P&O MPPT. The efficiency of ANFIS-based MPPT is higher than MPPT P&O. At 917.3 W/m2 of irradiation, the output power of the boost converters are 132.09, and 111.69 Watt for the ANFIS-based MPPT controller, and the P&O method MPPT, respectively.
MONITORING SYSTEM DESIGN FOR OFF-GRID SOLAR POWER PLANT BASED ON INTERNET OF THINGS Nrartha, I Made Ari; Wikapti, Ida Ayu Nyoman Iswari; Muljono, Agung Budi
DIELEKTRIKA Vol 10 No 1 (2023): DIELEKTRIKA
Publisher : Jurusan Teknik Elektro Fakultas Teknik Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/dielektrika.v10i1.327

Abstract

Solar energy can be converted to electrical energy directly using photovoltaic (PV) modules. The output of electrical energy from the PV module is affected by the intensity of solar radiation and temperature. This study aims to monitor the output power of a solar power plant against changes in solar irradiation and temperature based on the Internet of Things (IoT). Off-grid solar power plants consist of PV modules, solar charge controllers, and batteries. The variables measured are output power, irradiation, module temperature, environment temperature, battery charge and discharge current, and voltage of system. All measurement results are sent via the internet to the ThingSpeak web server to be stored and displayed on a computer or android device connected to the internet. This monitoring system can monitor the real-time conditions of off-grid solar power plants. Monitoring results on 25 October 2022 showed the highest energy was 128 Watt hours with an efficiency of 16.06%.
Co-Authors A B Muljono A. Dharma Abdulah Zainuddin Abta, Armen Ade Safitra Agung Budi Muljono Agung Budi Muljono Agung Budi Mulyono Agung Budi Mulyono Ahmad Sandi Yayan Saputra Akbar, Farhan Al-Ani, Waleed Khalid Ahmed Alfandi, Ahmad Nova Alfian, Muhammad Rolan Ana Rohana Ananda Ghufran Andi Akbar Hidayat Ari Afrizal Ari Hamzah Arnawan Hasibuan Asran Asran Astianto, Muhammad Helmi Baiq Vivi Alaydia Bella Navissa Bulkis Kanata Deary Pretty Genovani Manafe Desi Widianty Desky, Muhammad Aulia Dhika Aufa Hardinata Dupli, Dupli Duwiyandi Putri Elya Fajar Syahbakti Lukman Fajar Syahbakti Lukman Faris, M Salman Firwan Dani Ginarsa Ginarsa Hadi A, Muh. Saihul Hadinata, Angga Pratama Hamzan, Muhammad Abdulloh Harfani Puidi Harjian, Muhammad Rivaldi Herman Fithra Hutagalung, Rizki Shobirin I Ketut Wiryajati I M. Ginarsa I Made Budi Sukmadana I Made Budi Suksmadana I Made Budi Suksmadana I Made Dwipayana I Made Gina I Made Ginarsa I Made Ginarsa I.M. Ginarsa I.M.B Suksmadana Ida Ayu Mas C. Dewi Ida Ayu Sri Adnyani Ida Bagus Fery Citarsa Ida Bagus Fery Citarsa Ida Rofaida Indra Sasmita Isa, Muzamir Julia Kamilatin Kartika Kartika Karyawan, I Dewa Made Alit Ketut Perdana Putra, I Lalu Arya Sopansyah Logika Suharto Lutfi Wardi M Sayuti M.Kuraish Shihab Made Sutha Yadnya Maharani, Citra Putri Mahendra, Aldi Aryanugraha Misbahuddin, Misbahuddin Misbahul Jannah Muhamad Nudisantana Riswandi Muhammad Daud Muhammad Ulul Azmi Muhammad, Muhammad Mulijono, Agung Budi Muljono Muljono Muljono, A.B Muljono, A.B Muljono, Agung B Nababan, Sabar Nastika Nastika Natsir, Abdul Nugroho, Septian Ilham Nurdin Nurdin Osea Zebua Osea Zebua Putra, I Ketut Perdana Rahman Hidayat Rahmat Andria Raihan Putri Ramadan, Sulfi Wahyudi Rizki Ardiansyah Rizky Almunadiansyah Robi Kurniawan Roid, Fahrian Rosdiana Rosdiana S. M. Al Sasongko Sapto Nisworo Sapto Nisworo Saputra, Ahmad Sandi Yayan Sasmita, Hendra Sasongko, Sudi M. Al. Sasongko, Sudi Mariyanto Al Sasongko, Sudi Mariyato Al Sasongko, Sudi Maryanto Al Selamat Meliala Seniari, Ni Made Siregar, Widyana Verawaty Soedjatmiko - Sopian, Muhamad Sardi Sudi Mariyanto Al Sasongko Sudi Mariyanto Al. Sasongko Suksmadana, I Made Budi sultan Sultan ' Sultan . Sultan . Sultan Sultan Sultan Sultan Sultan Sultan Sultan Sultan Sultan Sultan Sultan Sultan Sulthon Zamroni Supriono Supriono Supriono Supriono Supriyatna . Supriyatna Supriyatna Taneza, Erlan Taufik Taufik Teti Zubaidah Tohri, M. Wadhiesta, I Komang Krisna Dwipayana Waleed Khalid Ahmed Al-Ani Warindi D Widianty , Desi Wikapti, Ida Ayu Nyoman Iswari Wildan Faisal Harharah Wirindi - Yuliani Astuti Apriani Yuristia, Rana Zahiri, Muhtadi Zainuddin, Abdullah Zulfikarullah Zulfikarullah