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All Journal International Journal of Electrical and Computer Engineering International Journal of Power Electronics and Drive Systems (IJPEDS) Majalah Ilmiah Teknologi Elektro Jurnal Teknik ITS IPTEK The Journal for Technology and Science Proceeding of the Electrical Engineering Computer Science and Informatics INTECOMS: Journal of Information Technology and Computer Science 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 Majalah Ilmiah Teknologi Elektro
I Made Yulistya Negara
Teknik Elektro Institut Teknologi Sepuluh Nopember
Arts Humanities Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Languange, Linguistic, Communication & Media Public Health Social Sciences Other

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Journal : JAREE (Journal on Advanced Research in Electrical Engineering)

 1   2 
Demagnetization Method for Reducing Inrush Current of Single Phase 1 kVA Transformer I Made Yulistya Negara; Dicky Wahyu Darmawan; Ryan Nurdianto; Dedet Candra Riawan; Arif Musthofa; Dimas Anton Asfani; Mochammad Wahyudi; 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.i1.4

Abstract

This study deals with an effort to reduce inrush current of single phase transformer during its energizing. Inrush current affected by residual flux was minimized using demagnetization method in order to reduce residual flux trapped in the core of transformer. Two methods of demagnetization namely variable frequency-constant voltage (VFCV) and variable voltage–constant frequency (VVCF) were applied and the effectiveness of both methods were then compared. Both methods were supplied with alternated direct current (DC), however the one was changed its frequency and the other one was changed its voltage. The results obtained after transformer was demagnetized using these methods show that VFCV method educed inrush current up to 76%, on the other hand VVCF ethod reduced inrush current only up to 37%. Moreover, demagnetization time process of VFCV method was about 1.46 s, which is 1 s faster than VVCF method.Keywords: demagnetization; inrush current; variable voltage-constant frequency; variable frequency-constant voltage
Design of Motor Current Signature Analysis (MCSA) Based on LabVIEW for Online Detection of Induction Motor Faults Dimas Anton Asfani; Soedibyo Soedibyo; I Made Yulistya Negara; Daniar Fahmi; Muhammad Eko Septiawan; Mochammad Wahyudi; Neisya Islamey Rifma
JAREE (Journal on Advanced Research in Electrical Engineering) Vol 1, No 2 (2017): October
Publisher : Department of Electrical Engineering ITS and FORTEI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25796216.v1.i2.20

Abstract

Induction motor is the most common used electric motor in industry. Along with its operation, induction motor can savere certain damage which is generally dominated by internal fault, such as s rotor fault, stator fault, and bearing fault. In this paper, the online detection based on motor current signature analyses (MCSA) for such faults was designed using LabVIEW. MCSA was performed to obtain the frequency which indicated the presence of certain damage of induction motor. The experimental result showed that the accuracy of proposed method reached 90 %. Keywords: induction motor; online detection; rotor fault; stator fault; bearing fault; MCSA.
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
An Investigation of Insulating Paper Effect on Gas and Aging on Mineral Oil Transformer Aulidina Dwi Nur Andriyanti; I Made Yulistya Negara; I Gusti Ngurah Satriyadi Hernanda; Daniar Fahmi
JAREE (Journal on Advanced Research in Electrical Engineering) Vol 6, No 1 (2022): April
Publisher : Department of Electrical Engineering ITS and FORTEI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/jaree.v6i1.246

Abstract

A transformer is an essential component in a generator, electrical equipment that works non-stop to support electricity needs. There has been a lot of thermal and electrical activity that the presence of an oil-paper insulator can suppress. The insulating ability can decrease and lead the failure due to the aging of the insulator by heating, moisture, and impurities. The aging of the paper was unavoidable, which caused the cellulose bond to break and form dissolved gases with oil, such as Carbon monoxide, Carbon dioxide, Methane, Acetylene, Ethylene, and Ethane. So, conventional dissolved gas analysis (DGA) was used to investigate further. The use of paper insulation with a certain amount affects the electrical strength of the insulator. A breakdown test on AC voltage is carried out for the following investigation. The result showed that the percentage of paper had an optimum number to get high insulator strength. By heating mineral oil for 250 hours and 500 hours, carbon monoxide and carbon dioxide are released in the different results as the DGA test. It can be concluded that cellulose paper has affected mineral oil's dissolved gas and insulator strength.
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.
Pre-energize Analysis on 3 Phase Transformer by Considering Each Phase Flux Hadwim Septiawan; I Made Yulistya Negara; Feby Agung Pamuji
JAREE (Journal on Advanced Research in Electrical Engineering) Vol 3, No 2 (2019): October
Publisher : Department of Electrical Engineering ITS and FORTEI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25796216.v3.i2.90

Abstract

Inrush current is a transient phenomenon that occurs when a transformer is first energized to a voltage source at no-load conditions. It causes a very high inrush current. Inrush currents can adversely affect the electric power system and can cause improper work of a relay protection errors. The purpose of this study is to determine the amount of inrush current and minimize the amount of inrush current by using the pre-fluxing method. In this study, a test was carried out using a 3-kVA core type 3 phase transformer. This test is done by giving DC flux before the transformer is connected to the voltage source, then the three transformer phases are energized simultaneously at a certain voltage angle so that the inrush current may could be minimized. The test results show that the transformer that is given a DC flux always has a relatively small inrush current. In this test the inrush current is reduced to a minimum value at an ignition angle of 90 degrees with an inrush current value of 0.74 A in phase R, 3.41 A in phase S, and 3.80 A in phase T.Keywords: flux, inrush current, transformer, transient.
Detection of Partial Discharge in Oil Filled-Tank using Acoustic in Audio Frequency Mochammad Wahyudi; Noor Akhmad Setiawan; Bambang Sugiyantoro; I Made Yulistya Negara; Gilang Adityasakti
JAREE (Journal on Advanced Research in Electrical Engineering) Vol 5, No 1 (2021): April
Publisher : Department of Electrical Engineering ITS and FORTEI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/jaree.v5i1.105

Abstract

In this paper, the acoustic signal within an audio sonic range emitted by partial discharge (PD) in an oil-filled cylindrical tank was investigated. The PD was generated by point-to-flat electrodes subjected to a high-voltage DC. The PD source location, installation method, and sensor microphone, as well as the electrode gap distance, were varied. Subsequently, acoustic waveforms and their frequency spectrum, as well as the PD current, were analyzed. The results showed that transient acoustic signals indicated the emergence of PD. The acoustic sensor attached to the outer wall of the tank (contact type) was more sensitive than the sensor that had a distance from the tank (non-contact type). Sensor contact type acoustic signals placed parallel to the location of the PD source provided a more accurate signal form compared to those set nonparallel to the frequency spectrum, which was relatively flat. A closer electrode distance caused the duration, acoustic signal amplitude as well as the currents to be more considerable. For the identical variable, the acoustic signal form was not related to the current signal despite the same signal duration. Besides, locations of sources of the PD notably influenced the signal form, but it did not apply for the current signal.Keywords: acoustic, audio frequency, fast Fourier transform, high-frequency current transformer, oil transformer, partial discharge
Co-Authors A A Gd Dharma Putera Achmad Affandi Adi Soeprijanto Aditya Dwi Nugraha Affandi Afif, Yusrizal Agung Wicaksono Akbar, Muhammad Fadlan Ali Musyafa Ardyono Priyadi Arief Budi Ksatria Arwindra Rizqiawan Aryono, Nur Aryanto Aulidina Dwi Nur Andriyanti Azmi Wicaksono Bambang Sugiyantoro Damara, Dio Randa Daniar Fahmi, Daniar Dedet Candra Riawan Devy Kuswidiastuti Dianti, Dwie Vannia Dicky Wahyu Darmawan Dicky Wahyu Darmawan Dimas Anton Asfani Dwi Krisna Cahyaningrum Fadhilah, Arkan Feby Agung Pamuji Gilang Adityasakti Hadwim Septiawan Heri Nugraha Hermawan, Asep Dadan Husnah, Nurul I Gusti Ngurah Satriyadi Hernanda Imam Robandi Indra Sidharta Irmawati, Novia Ayu Ksatria, Arief Budi Liga Primabaraka M, Arief Made Yudha Pranadiksa Giri Made Yudhi Setyawan Mat Syai’in Mochammad Wahyudi Mubarok, Abdul Fattah Muhammad Eko Septiawan Muhammad Sulthon Novera Rega Musthofa, Arif Nandar, Cuk Supriadi Ali Neisya Islamey Rifma Ni Ketut Aryani Noor Akhmad Setiawan Nugraha, Yurid Eka Prajanuarto, Bimo Prastawa, Andhika Puji Handayani R. Wahyudi Rajavalens, Muhammad Roikhana Farista Dewira Rony Seto Wibowo Rukmana, Maman Ryan Nurdianto Satria Seventino Simamora Setijadi, Eko Siti Sudatul Aisyah N Sitorus, Philip Nathanael Erlangga Soedibyo Soedibyo Subekti, Hakim Sudatul Aisyah N, Siti Surya Dwi Kisdarmawan Suwadi Suwadi Titiek Suryani Tri Desmana Rachmildha, Tri Desmana Wildan Rahadian Putra Winanda Riga Tamma Yoga Uta Nugraha Yuniarto, Muhammad Nur Zaidan, Risyad Alauddin