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All Journal International Journal of Electrical and Computer Engineering International Journal of Power Electronics and Drive Systems (IJPEDS) Jurnal Teknik ITS Sinergi JURNAL NASIONAL TEKNIK ELEKTRO Proceeding of the Electrical Engineering Computer Science and Informatics JAVA Journal of Electrical and Electronics Engineering JAREE (Journal on Advanced Research in Electrical Engineering) Jurnal Nasional Teknik Elektro dan Teknologi Informasi Prosiding Seminar Nasional Teknik Elektro, Sistem Informasi, dan Teknik Informatika (SNESTIK) Sewagati
Dimas Anton Asfani
Institut Teknologi Sepuluh Nopember
Arts Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Public Health Social Sciences Other

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Electromagnetic Field Analysis on Asymmetrical Three Phase Transformer Arief Budi Ksatria; I Made Yulistya Negara; Dimas Anton Asfani; I Gusti Ngurah Satriyadi Hernanda; Daniar Fahmi; Muhammad Sulthon Novera Rega
JAREE (Journal on Advanced Research in Electrical Engineering) Vol 3, No 1 (2019): April
Publisher : Department of Electrical Engineering ITS and FORTEI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25796216.v3.i1.69

Abstract

This study deals with the effect of core lamination thickness on asymmetrical three-phase transformer to hysteresis curve. The asymmetrical three-phase transformer is a transformer that has different leg-length. The used transformer in this research has 5-kVA rating, and E-I core-cutting topology, and a larger leg size on center compared to the the side-legs of the transformer. Research on the effect of transformer core lamination thickness was done using finite-element method (FEM) to find out the magnetic field density (B) distribution and magnetic field intensity (H) at some points which the flux distribution flows. Variables of thicknesses used in the study were either intact or non-laminated-core transformer, 2.5 cm-laminated transformer core, and 0.03 cm-laminated transformer core. Each transformer has 39 monitor points to obtain the maximum value of B and H. Based on the simulation results, the highest magnetic field density value is in the transformer with 0.03 cm-laminated core, which is 2.174 Vs/m2 and the magnetic field density with the highest absolute average is in a transformer with a non-laminated-core, which is 1.837 Vs/m2. At the branching point of the core-cutting of the transformer with 0.03 cm-laminated transformer core have the highest magnetic field intensity value compared to the non-laminated-core transformer and 2.5 cm-laminated.Keywords: asymetrical leg, electromagnetic field, finite element method, hysteresis curve, three phase transformer.
Effect of Corona Ring Design and Placement on the Distribution of Electric Fields on 500 kV Gantry Substation in Indonesia Yusrizal Afif; I Made Yulistya Negara; Dimas Anton Asfani
JAREE (Journal on Advanced Research in Electrical Engineering) Vol 2, No 2 (2018): October
Publisher : Department of Electrical Engineering ITS and FORTEI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25796216.v2.i2.53

Abstract

High electric field intensity in string isolators can trigger corona which results in premature aging of the insulator. One solution to overcome this problem is by installing the corona ring, the corona ring will uniform the electric field distribution of the insulator adjacent to the conductor. However, the dimensions and placement of the corona ring will affect the performance of the corona ring in distributing the electric field. therefore, this study will discuss the effect of dimensions and placement of the corona ring on the electric field distribution. Parameters observed were ring length, ring angle and height of corona ring. Simulation with the finite element method (FEM) is used to model the electric field distribution value for each parameter change. As a comparison, changes in corona ring parameters compared to the corona ring design are commonly used in 500 kv gantry substation in Indonesia. Keywords: Corona ring, Electric field distribution, Finite element method (FEM), Insulator string, Porcelain Insulator.
Ferroresonance Signal Analysis with Wavelet Transform on 500 kV Transmission Lines Capacitive Voltage Transformers I Gusti Ngurah Satriyadi Hernanda; I Made Yulistya Negara; Adi Soeprijanto; Dimas Anton Asfani; Mochammad Wahyudi; Surya Dwi Kisdarmawan; Daniar Fahmi
JAREE (Journal on Advanced Research in Electrical Engineering) Vol 1, No 1 (2017): April
Publisher : Department of Electrical Engineering ITS and FORTEI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25796216.v1.i1.8

Abstract

This paper deals with ferroresonance detection on an transmission line utilizing wavelet transform. The ferroresonance involving linear capacitor and non-linear inductor was triggered by the disturbances of power system, such as lightning strike, switching operation and ground fault. The primary voltage of capacitive voltage divider (CVT) was observed as response of the triggered ferroresonance. The voltage signal was processed using wavelet daubechies (db5) until 9 levels. The cyclic cumulative energy for each condition was then calculated and compared. The result shows that the cyclic cumulative energy ratio and duration of period of cumulative energy deviation can be used as ferroresonance detection parameters.Keywords: ferroresonance; capacitive voltage divider, wavelet transform
Analysis of Breakdown Voltage Test on Transformer Oil based on Dissolved Gas Analysis Test Result I Made Yulistya Negara; Dimas Anton Asfani; Daniar Fahmi; Roikhana Farista Dewira; Mochammad Wahyudi; Made Yudha Pranadiksa Giri
JAREE (Journal on Advanced Research in Electrical Engineering) Vol 2, No 2 (2018): October
Publisher : Department of Electrical Engineering ITS and FORTEI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25796216.v2.i2.55

Abstract

Transformer which has full-load and used continuously will create heat on the core, so that oil insulation is required. The impact of gases in oil insulation to breakdown voltage has been not investigated yet. This research implied an information about the impact of gases in insulation oil to breakdown voltage. Multiple linear regression with 300 data was the method used in this research. Analysis had been conducted on each gas, all gases, three combinations of gasses, four combination gases without acetylene, and three combination gases without acetylene. The target of this research was to know the impact of gases in oil transformer to the value of breakdown voltage. The results showed that the gasses had impact of 0.325 on breakdown voltage classified as a slight impact for breakdown voltage. Keywords: DGA, BDV, Transformer Oil, Double Linear Regression
Impact of Shape and Total of Particle to Characteristics of Partial Discharge and Breakdown Voltage on Oil Insulation in Uniform Field Daniar Fahmi; I Made Yulistya Negara; R. Wahyudi; Dimas Anton Asfani; Made Yudhi Setyawan; Mochammad Wahyudi
JAREE (Journal on Advanced Research in Electrical Engineering) Vol 2, No 1 (2018): April
Publisher : Department of Electrical Engineering ITS and FORTEI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25796216.v2.i1.35

Abstract

Oil insulation is one of the insulation medium types commonly used in high voltage apparatus. This insulation is to separate between the conductive part and non-conductive part. However, oil insulation can experience decreasing of dielectric strength. It may be caused by the presence of solid particles. Therefore, the testing was conducted to obtain the effect of solid particles to characteristics of partial discharge and breakdown voltage of oil insulation. The results generally proved that the existence of solid particles can reduce the breakdown voltage value of oil insulation. In addition, the solid particles led to two types of corona on oil insulation, namely positive and negative corona. Keywords: oil insulation; partial discharge; breakdown voltage; corona; particle shape; particle total.
Evaluasi Degradasi Isolasi Motor akibat Multi-factor Aging berdasarkan Indeks Polarisasi dan SEM-EDX Mochammad Wahyudi; Dimas Anton Asfani; I Made Yulistya Negara; Daniar Fahmi; I Gusti Ngurah Satriyadi Hernanda
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 8 No 1: Februari 2019
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1189.562 KB)

Abstract

The operation of induction motor affected by stress factor causes insulation degradation. This degradation can be observed from changes in insulation characteristics, including electrical, physical, and chemical. This study aimed to evaluate the insulation resistance (IR) and polarization index (PI) since the induction motor condition was good until burned out. Scanning Electron Microscopy with Energy Dispersive X-ray Spectroscopy ( SEM-EDX) testing was also carried out to analyze changes in microstructure, morphological characteristics, and chemical composition in stator windings. In addition, X-ray powder diffraction ( XRD) testing was presented to validate that the damaged insulation was caused by the given stress. To accelerate degradation of insulation, induction motor in service condition was subjected by a lot of pressure simultaneously, including thermal, moisture, and salt contamination. The accelerated aging testing was gradually conducted according to three schemes with different pressure levels. The results showed that the applied stresses could accelerate the insulation aging. A significant decrease of IR and PI values was found in the third scheme, as the IR value was less than 5 MΩ and the PI value was 0.6 (danger category). The insulation failure was achieved at a total duration of testing for 222 hours. The results of SEM-EDX and XRD testing showed the presence of mineral deposits from water vapor, salt contaminants, cracks, and fracture on the insulation surface.
Alat Pembasmi Hama Otomatis Berbasis Solar Cell di Desa Pranggang, Kabupaten Kediri Dimas Anton Asfani; I Gusti Ngurah Satriyadi Hernanda; I Made Yulistya Negara
Sewagati Vol 6 No 3 (2022)
Publisher : Pusat Publikasi ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2431.146 KB) | DOI: 10.12962/j26139960.v6i3.138

Abstract

Pembangunan yang masif di Indonesia diikuti dengan semakin tingginya kebutuhan pangan untuk masyarakat mengakibatkan permintaan bahan pangan yang meningkat. Akan tetapi, beberapa tahun terakhir hasil pertanian di Indonesia mengalami penurunan. Hal itu disebabkan oleh meningkatnya kerusakan pada tanaman, salah satunya serangan hama yang meningkat. Namun, pengendalian yang masih kurang efektif mengakibatkan setiap tahun petani mengalami kerugian. Hama yang sering menyerang persawahan diantaranya adalah wereng, belalang, walang sangit, ulat, gangsir, dan tikus. Oleh sebab itu, pembasmian hama perlu dilakukan sebagai tindakan pengendalian pada tanaman. Solusi dari permasalahan ini adalah dengan cara membuat alat penangkap hama serangga dan pengusir tikus dengan sumber panel surya. Dengan menggunakan alat ini petani dapat mengurangi atau bahkan tidak memerlukan lagi untuk menggunakan pestisida yang dapat membahayakan kesehatan manusia dan lingkungan. Disamping itu, panel surya merupakan suatu alat yang dapat mengkonversi pancaran sinar matahari menjadi energi listrik. Teknologi panel surya merupakan salah stau teknologi yang praktis dan ramah lingkungan. Oleh karena itu, melalui skema pengabdian masyarakat yang dilakukan Laboratorium Tegangan Tinggi Departemen Teknik Elektro ITS turut membantu dalam pengendalian hama tikus dan serangga dalam meningkatkan produktivitas hasil panen dengan: (i) Pembuatan alat pengusir tikus dan serangga secara otomatis, (ii) Melaksanakan sosialisasi mengenai pengendalian hama dan penggunaan alat untuk meningkatkan produktivitas hasil panen, (iii) Melakukan konsultasi online untuk menjaga dan merawat alat dengan mitra.
Alat Pengering Padi Portabel dengan Pemanas Elektrik yang Dilengkapi Thermocontrol guna Membantu Proses Pengolahan Padi di Desa Kembiritan Kabupaten Banyuwangi I Made Yulistya Negara; I Gusti Ngurah Satriyadi Hernanda; Dimas Anton Asfani
Sewagati Vol 6 No 4 (2022)
Publisher : Pusat Publikasi ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1317.376 KB) | DOI: 10.12962/j26139960.v6i4.141

Abstract

Negara Indonesia merupakan negara tropis yang mengalami dua musim yaitu musim penghujan dan kemarau. Memasuki akhir tahun biasanya akan terjadi musim hujan disebagian besar wilayah Indonesia yang mana sangat berdampak kepada para petani. Minimnya cahaya matahari pada musim penghujan menyebabkan para petani kesulitan untuk menjemur padi dari hasil panennya. Berkaca pada masalah tersebut, pengabdi pada kegiatan Pengabdian Kepada Masyarakat ini berupaya untuk merancang dan membuat sebuah alat pengering padi dengan efektivitas dan efisiensi yang tinggi. Alat pengering padi ini menggunakan gas sebagai bahan bakarnya dan didesain portable sehingga mudah untuk memindahkan dari lahan yang satu ke lahan yang lain. Tak hanya mengkonsep dan membuat alat pengering padi saja, tetapi kegiatan sosialisasi pun dilakukan untuk memperkenalkan cara penggunaan serta maintannace alat. Pengabdi berharap dengan adanya teknologi pengering padi portable bisa memudahkan petani dalam mengeringkan padinya.
Sosialisasi Bahaya Listrik bagi Rumah Tangga pada Hunian Baru Korban Letusan Semeru, Kabupaten Lumajang I Made Yulistya Negara; I Gusti Ngurah Satriyadi Hernanda; Dimas Anton Asfani; Titiek Suryani; Devy Kuswidiastuti; Achmad Affandi; Puji Handayani
Sewagati Vol 7 No 3 (2023)
Publisher : Pusat Publikasi ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (7899.44 KB) | DOI: 10.12962/j26139960.v7i3.494

Abstract

Gunung Semeru terletak pada Kabupaten Lumajang dimana pada Sabtu, 4 Desember 2021 pukul 15.15 WIB terjadi erupsi yang berakibat di dusun sekitar lereng Gunung Semeru. Dusun Curah Kobokan merupakan salah satu dari beberapa daerah yang terdampak erupsi Gunung Semeru. Pasalnya, hampir semua rumah warga di lokasi itu hancur. Sebanyak 300 kepala keluarga dari Dusun Curah Kobokan mengungsi dari total 4.250 orang pengungsi. Terdapat hunian baru yang terletak di Desa Sumbermujur dan menjadi tempat pengungsian warga Dusun Curah Kobokan yang terdampak. Dengan adanya hunian baru ini dirasa warga memerlukan adanya pengetahuan terkait bahaya listrik bagi rumah tangga dan instalasi listrik yang benar. Oleh karena itu, melalui skema pengabdian masyarakat yang dilakukan Laboratorium Tegangan Tinggi Departemen Teknik Elektro ITS turut membantu menjawab permasalahan tersebut dengan menciptakan sebuah kegiatan penyuluhan Sosialisasi Bahaya Listrik Bagi Rumah Tangga Pada Hunian Baru Korban Letusan Semeru, Kabupaten Lumajang. Sasaran kegiatan yang dituju pada kegiatan pengabdian masyarakat ini adalah para warga Desa Sumbermujur, Kabupaten Lumajang.
Alat Pemberi Pakan Udang Otomatis Portabel Berbasis Panel Surya guna Membantu Proses Budidaya Tambak Udang di Desa Tambak Ploso Kabupaten Lamongan Dimas Anton Asfani; I Gusti Ngurah Satriyadi Hernanda; I Made Yulistya Negara; Suwadi; Affandi; Devy Kuswidiastuti; Puji Handayani; Titiek Suryani
Sewagati Vol 7 No 3 (2023)
Publisher : Pusat Publikasi ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3587.289 KB) | DOI: 10.12962/j26139960.v7i3.497

Abstract

Kabupaten Lamongan merupakan salah satu wilayah yang memiliki tambak udang seluas 932,29 Ha. Salah satu tambak yang terkenal di Lamongan adalah tambak udang yang berisi udang udang windu (Penaeus monodon) dan udang vaname (Litopenaeus vannamei). Berdasarkan hasil produksi maka perlu dilakukan pembudidayaan secara intesif untuk meningkatkan hasil produksi dan dapat unggul di pasar lokal maupun internasional. Salah satu faktor adalah dalam hal pemberian pakan pada udang yang merupakan hal penting dalam kegiatan pembudidayaan udang. Namun sayangnya saat ini sistem pemberian makan pada udang masih sangat bergantung dengan sumber daya manusia yang dilakukan secara manual. Berkaca pada masalah tersebut, pengabdi pada kegiatan pengabdian kepada masyarakat ini berupaya untuk merancang dan membuat sebuah alat pemberi pakan otomatis yang menggunakan solar panel sebagai sumber tenaganya. Tak hanya membuat konsep dan alat saja, tetapi kegiatan sosialisasi pun dilakukan untuk memperkenalkan cara menggunakan serta maintenance alat. Pengabdi berharap dengan adanya teknologi pemberi pakan otomatis bisa memudahkan dalam pemberian pakan udangnya.
Co-Authors Achmad Affandi Ade Kurniawan Putra Adi Soeprijanto Affandi Afif Al Asyad Afif, Yusrizal Ahmad Faiz Farizy Akbar, Muhammad Fadlan Ardyono Priyadi Arief Budi Ksatria Arwindra Rizqiawan Azmi Wicaksono Daniar Fahmi, Daniar Dedet Candra Riawan Devy Kuswidiastuti Diaz Ficry Arfianto Dicky Wahyu Darmawan Dwi Krisna Cahyaningrum Fadhilah, Arkan Febrianto Wahyu Utomo Husnah, Nurul I Gusti Ngurah Satriyadi Hernanda I Made Yulistya Negara Imam Mukhlash Indra Sidharta Irmawati, Novia Ayu Isti Qomah Liga Primabaraka M, Arief Made Yudha Pranadiksa Giri Made Yudhi Setyawan Mochammad Wahyudi Mohammad Iqbal Mubarok, Abdul Fattah Muhammad Eko Septiawan Muhammad Sulthon Novera Rega Musthofa, Arif Neisya Islamey Rifma Nugraha, Yurid Eka Onang Surya Nugroho P, Gilang Dwi Prajanuarto, Bimo Puji Handayani Pujiantara, Margo R. Wahyudi Rajavalens, Muhammad Rifki Wiryatama Roikhana Farista Dewira Rukmana, Maman Ryan Nurdianto Setijadi, Eko Siti Sudatul Aisyah N Sitorus, Philip Nathanael Erlangga Soedibyo Soedibyo Subekti, Hakim Sudatul Aisyah N, Siti Supriyono, Joko Surya Dwi Kisdarmawan Suwadi Suwadi Suwito Suwito Titiek Suryani Tri Desmana Rachmildha, Tri Desmana Widyatama, Anton Putra Yoga Uta Nugraha Yulistya, I Made Yuniarto, Muhammad Nur Zaidan, Risyad Alauddin