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All Journal Jurnal Sains dan Teknologi Mechatronics, Electrical Power, and Vehicular Technology Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains ICON-CSE Jurnal Pengabdian UntukMu NegeRI JET (Journal of Electrical Technology) Dinamisia: Jurnal Pengabdian Kepada Masyarakat International Journal of Electrical, Energy and Power System Engineering (IJEEPSE) Unri Conference Series: Community Engagement Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
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Universitas Riau
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Analisa Sistem Proteksi Petir Pada Sutt 150 KV Menggunakan Software ATP Havel Alindo Sano; Fri Murdiya
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5, No 1 (2018): Wisuda April Tahun 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Electrical energy is very important today. The power company distributes the electric energy through the 150 kV overhead lines. The transmission line is a major part of the electrical energy distribution process. Overhead lines are supported by high towers, therefore the overhead lines and towers prone to lightning. The lightning current leads to the increasing voltage on the overhead lines. Surge arrester is a protective device used to protect overhead lines from lightning current. The analysis of the performance of the surge arrester against the lightning impulse requires the investigation in the placement of the surge arrester and the number of surge arresters installed. This study aims todetermine the magnitude of the voltage caused by lightning strikes by varying the location of the surge arrester on the overhead lines. This study was conducted by selecting a lightning strike at apeak voltage of 10 MV on a transmission tower using ATP software. This study indicated that the installation of surge arresters on the overhead lines for each tower leads to droping voltage verywell. The result of study shows that the best result was to install the arresters on each tower phase by decreasing the voltage at 1st tower by 0,4679 MV (92,81%), 2nd tower 0,5674 MV (92,64%), 3rd tower 1,2248 MV (85,79%), 4th tower 10 MV (0%), 5th tower 1,2322 MV (86,09%) and 6th tower 0,6219 MV (92,53%).Keywords : Lightning strikes, surge arrester, peak voltage, placement of surge arrester , voltage drop
Analisa Sistem Proteksi Petir Pada Sutet 275 KV Menggunakan Software ATP-EMTP Bella Novita Dona; Fri Murdiya
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Indonesia has high humidity intensity. This causes the lightning strike density on Indonesia be high too. Lightning strikes can damage electrical equipment and transmission networks, especially 275 kV Air Line of Extra High Voltage (SUTET), because it has a high towers that is susceptible to lightning strikes. Therefore, lightning protection with arrester is needed. This study, will examine the influence of installation variations of arrester based on classification towers at T1,T3,T5,T7,T9, and T2,T4,T6,T8,T10, variations in stroke current (10 kA, 30 kA, 60 kA, and 100 kA), and variations in lightning strike position (T1, T5, and T10) by using ATP-EMTP software. The analysis process is done by modeling all parameters of the transmission line and power plant. The results of this study are if lightning strikes a particular towers, the voltage on the towers will be higher than the other towers, the greater lightning impulse current, the greater the voltage that appears on its phase voltage; and so the arresters used for this conditions at T2, T4,T4, T8, and T10 are more efficient in terms of reducing the voltage.Keywords : lightning arrester , extra high voltage, surge arrester, drop voltage, ATP
Karakterisasi Dan Potensi Penyisihan Pada Pome Menggunakan Proses Ozonasi Shifa Rayni Efendi; David Andrio; Fri Murdiya
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 1 Januari s/d Juni 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

POME has high pollutants. POME is thick brown. The color of POME is associated with complex compounds derived from polymerization between the degraded products lignin and tannins, and POME has a high chemical composition and concentration of simple organic compounds. POME is a major source of water pollution because it is difficult to decompose and is dangerous for the environment. This research aims to investigate the characteristics of POME by analysis using ozonation. The results showed an decrease in COD from 58.144 mg/L to 56.181 mg/L. Keywords: POME, ozonation
Karakteristik Tegangan Tembus Arus Bolak Balik Pada Minyak Jarak Pagar (Jatropha curcas) Sebagai Alternatif Isolasi Cair Rendy Kamerlisa Putra; Fri Murdiya
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Oil insulation generally use mineral oil because it has good heat absorption and dielectric characteristics as an insulator. Because of mineral oil is less friendly environmental, so important to find a solution to overcome them. This research aims to determine the feasibility of Jatropha curcas oil as an alternative oil insulation. This study has used variations of gap and water content to determine the effect on the breakdown voltage. The test result of the breakdown voltage of Jatropha curcas oil is compared to the breakdown voltage of the Shell Diala S2 ZU-1 oil. Futhermore the final result is found that the average of the breakdown voltage of Jatropha curcas is higher than Shell Diala S2 ZU-1 oil. The end of this study has achieved average values of breakdown voltage with lesser water concentration i.e. 2,17 %, 1,96%, 1,86%, etc. Prerequirements of the oil insulation must be agreed with the following standards i.e SPLN 49-91: 1982 and IEC 60296-2003. It’s explained that water concentrationt must fulfilled less than 3% (30 mg/kg). In this research Jatropha curcas oil have water concentration which complied to IEC 60296-2003 standard. SPLN 49-91: 1982 has declared that oil insulation must require the value of flash point ≥ 140°C, viscosity ≤ 40 cSt, pour point ≤ -30 °C, and density ≥ 0,859 gr/cm3. The result from this research should be fulfilled the caracteristic of breakdown voltage, flash point and water concentration that Jatropha curcas oil.Keywords: Oil insulation,breakdown voltage, jatropha oil.
Karakteristik Dielektrik Campuran Gas Karbondioksida (CO2) Dengan Nitrogen (N2) Dibawah Terpaan Medan Tinggi DC Polaritas Negatif Yansyah Prasetyo; Fri Murdiya
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5, No 1 (2018): Wisuda April Tahun 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Gas insulating material commonly used in electrical system is SF6 gas. SF6 gas is used as an insulator material in electrical system in transfer heat. However, SF6 gas is not environmentally friendly, and triggers the increase of global warming so it is necessary to conduct research to get other gas insulators as alternative materials such as gas Carbondioxide (CO2) and Nitrogen (N2). This study discusses the dielectric characteristics of a mixture of Carbondioxide (CO2) gas with Nitrogen (N2) under electrical stress (high voltage negative polarity). The study used spherical electrodes and needles with varying gap distances and we compared the gas breakdown voltage with ratio 25% CO2 : 75% N2, 50% CO2 : 50% N2, and 75% CO2 : 25% N2 respectively. The purpose this research is to find the maximum breakdown voltage for several ratio gases. From the test result obtained breakdown voltage in negative polarity is smaller than positive polarity. We also attempted the gases breakdown voltage 70 trials and it was indicated that the breakdown voltage varied -78,69 kV until -105 kV. The maximum discharge current recorded by an osciloscope was -104 A in 50% CO2 : 50% N2 ratio.Keywords : electrode, mixture insulation gas, polarity efect, dielectric power, negative polarity, breakdown voltage
Perancangan Kendali Transformator Multiinput Berbasis Arduino Pada Pembangkit PV 9 X 10 WP Tommy Adrian Sinaga; Antonius Rajagukguk; Fri Murdiya
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 1 Januari s/d Juni 2021
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Abstract

There were several issues that could interfere with large-scale PV performance. The shading effect on the PV array caused reduced absorption of solar radiation in the modules in the PV array. The reduced absorption of solar radiation results in a decreased in the voltage on the PV string and disrupted the performance of the PV array system. This study designed a miniature PV farm with a small capacity consisting of 9 PV modules of 10 watt-peaks arranged to form 3 strings and each string consisting of 3 PV modules. This research used a bypass diode circuit and a blocking diode. In this study, the PV output voltage would be classified based on the voltage reading at each PV sting. The voltage at the time of the 3rd string was not exposed to small shading of 53 volts, greater than 36 volts, when 1 string was shade, the resulting voltage was smaller than 35 volts and a larger of 18 volts, while when 2 strings were shade, the resulting voltage is less than 17 volts. The output voltage of the PV is in the form of a DC power source, therefore an inverter was need that could convert it into an AC power source. Due to the small output voltage of the PV to be able to supply the feed load, a step up transformer was need. In this research, the transformer was design to be able to accept various input from PV. So a transformer with a variable input was design with a control on the primary winding to adjust the winding that would be active according to the sensor reading at the transformer input. And in the secondary winding of the transformer, a sensor was also installed to take a reading of the transformer output voltage to keep the voltage ± 220 volts.Keywords: Shading, Voltage, Photovoltaic, PV Farm, Inverter, Transformer
Karakteristik Pengujian Tegangan Tembus Arus Bolak Balik (AC) Pada Minyak RBDPO Olein Sebagai Alternatif Isolasi cair Meliana Meliana; Fri Murdiya
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
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Abstract

Transformer Oil that mostly comes from Mineral Oil (MO) is originated from fossil fuel that is harmful to the environment, do not biodegrade easily, it is a non-renewable resourceand it requires time to extract. Hence, an oily liquid isolation is needed which derives of vegetable oil,one of the examples; extracted of Palmoil that is already processed into RBDPO Olein. This research aim is to test the characteristic of AC Breakdown Voltage on RBDPO Oleinas a liquid isolation alternative and transformer oil as a comparison. The breakdown voltage of RBDPO Olein oil is more important than mineral oil. This research also examines the effect of temperature increase variation on isolation oil, electrode distance variation, variation of the electrode utilized, and effect of the decrease of oil water ratio of RBDPO Olein towards isolation oil breakdown voltage. A higher temperature of the isolation oil, a wider electrode distance, and reduction of oil water ratio on isolation oil shall generate a higher breakdown voltage. For the variation of using partial ball electrode and ball electrode from the same material, it generates an almost similar breakdown voltage. As an alternative liquid isolation, the RBDPO Olein oil has fulfilled several criteria as per liquid isolation specification which include breakdown voltage, the effect of temperature variation on breakdown voltage, oil clearance, density, viscosity. However, the pour point and flash point have not fulfilled the criteria as a liquid isolation alternative.Keywords: RBDPO Olein, Breakdown Voltage, Partial Ball Electrode, Balls Electrode, Liquid Isolation.
Analisis Korelasi Kawat Tanah Dengan Tahanan Pentanahan Terhadap Back Flashover Novri Andrean; Fri Murdiya
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
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Abstract

Indonesian is a tropical climate in general, including areas with highlightning days each year. A prominent mountain or tower in the middle of a free area of rice fields, fields, gardens, etc. it has the possibility of a higher radiation than places in the middle of the city surrounded by other tall buildings. The need for electricity is very important. So it needs a reliable system of electric power, service, and continuity of maximum 150 kV High Voltage Air Channels electricity distribution is part of the electric power transmission system. This channel is quite often a direct lightning strike disruption which can result in Back Flashover in the channel. To minimize this disturbance used the Independent Ground Wire System (IGWS) system installed along the 150 kV Transmission Line. Then to determine the correlation of ground wire with the value of tower ground resistance against back flashover due to direct lightning strikes using ATP-EMTP Software. The Simulation results show that the relationship of ground wire with tower ground resistance value is the greater than lightning impulse current and the tower grounding value. The peak voltage on the tower and phase wire increase.The phase voltage of the phase wire which is exposed to the back flashover on the 70 kA lightning impulse with the phase wire voltage of 1.66 MVolt.Keywords: ATP-EMTP, Back Flashover, Ground Wire, Tower grounding value.
Karakteristik Tegangan Tembus Gas CO2 Dengan Menggunakan Pembangkit Tegangan Tinggi DC Polaritas Positif Noviansyah Noviansyah; Fri Murdiya
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 1 (2017): Wisuda Februari Tahun 2017
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Abstract

The Sulfur hexafluoride (SF6) gas is the most widely used in high voltage applications, such as in gas insulated switchgear (GIS) and the gas circuit breaker (GCB) due to good insulation performance. However, SF6 gas has very serious problems for the environment, namely the global warming potential is very high. Of course, the study of alternative gas is required such as cabon dioxide (CO2), nitrogen (N2), and others for high voltage insulation. From the results of breakdown test on CO2 gas with the needles electrodes configuration or the spheres electrodes for several pressure gas level at 1 bar, 2 bars, 3 bars, and 4 bars, respectively, show the breakdown voltage of CO2 gas is proportional to pressure gas. Then, from the research data were also obtained that the breakdown voltage of CO2 gas is greater than the air. The analysis of weibull distribution weibull probability indicates that the voltage for the breakdown voltage of CO2 gas is proportional to the pressure of the gas. breakdown voltage also proportional to the distance between the needle-needle electrodes or sphere electrodes.Key words: CO2 gas, weibull distribution, breakdown voltage
Perancangan Dan Aplikasi Pembangkit Plasma Tegangan Tinggi AC Menggunakan Dual Flyback Transformator (TFB) Topology Inverter Half Bridge Muhammad Rafi Epafras; Fri Murdiya
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 1 Januari s/d Juni 2021
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Abstract

The implementations of high voltage electricity in various fields, one of it leads to eco friendly technology known as plasma technology. The use of plasma technology is utilized in the production process of advanced nano-sized materials. Plasma can be generated by the corona discharge method which is generally used as a method of generating plasma supplied with highvoltage or also known as high voltage plasma generators. The limitation of high voltage generation becomes a barrier in generating high voltage plasma, because the high voltage generator exist is still in a large scale. So, it needs a high voltage plasma generator in a laboratory-scale. In this research, high voltage plasma generators will be designed using two flybacktransformers with half-bridge inverter using MOSFET as switching devices. Switch is controlled by the control circuit IC 4047CDwith a frequency of 33 kHz at a duty cycle of 50%. The comparison of coils on the flyback transformer used is 1:75. The resulting plasma will be applied in producing a layer of graphene from coconut shell carbon waste. Plasma is raised with rod electrodes and plate electrodes. The test carried out with variations in inverter h-bridge input voltage.. For Variations in inverter inputvoltage used are 10, 12.5, 15 and 17,5 V. The test results showed that variations in inverter h-bridge input voltage could affect theamount of plasma produced, and plasma also affects the yield of decomposed carbon materials with high voltage plasma produced 1,40 kV and 2,57 kV at a distance between electrodes 5 mm.Keywords : Flyback Transformers, Half Bridge, Plasma, Graphene.
Co-Authors Abdul Rasyid Aldi, Robi Amir Hamzah Amun Amri Antonius Rajagukguk Ari Sandhyavitri Azriyenni Azhari Zakri Bella Novita Dona Cecep Zaenal Mutaqin Cecilia Stevany Chandra, Andre David Andrio Devita Amalia Dzaki Furqoon Ery Safrianti Faisal Setiawan Febrizal Ujang Feranita Feranita Firdaus Firdaus Firdaus Firdaus Firdaus Firdaus Sutan Ginting, Rio Abraham Hamdani, Eddy Hardani, Nanda Hardiwika, Ericko Hariadi, Rofi Havel Alindo Sano Havel Alindo Sano Heni Pujiastuti Hotdin Peterson A I Gusti Bagus Wiksuana Liho Dachanri Doly Linna Oktaviana Sari Luchman Wira Admaja M Javad Faruqi Mangapul, Toni Maradongan, Maradongan Meliana Meliana Michael Anderson Muhammad Rafi Epafras nadeak, Parade Neni Frimayanti Noviansyah Noviansyah Novri Andrean Nurhalim Dani Ali Nurhalim Nurhalim Oky Kurniawan Panjaitan, Handerson Pardede, Tumpal Pedia Aldy Rendy Kamerlisa Putra Riski Febriyursandi Rizal, Ghane Sha Rofi Hariadi Rosma, Iswadi Hasyim Rossi Passarella Rudi Setiawan Sano, Havel Alindo Saputra , Ivan Shifa Rayni Efendi Stevanny, Cecillia Stevany, Cecilia Sulistianto, Agus Ernawan Suwitno Tommy Adrian Sinaga Tommy Rizky Krisnadi Yan Habibillah Pesa Yansyah Prasetyo Yusnita Rahayu