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PERANCANGAN ALAT DAN PENGUJIAN TEGANGAN TEMBUS DENGAN MINYAK ISOLASI RBDPO OLEIN MENGGUNAKAN ELEKTRODA BOLA-BOLA Setiawan, Rudi; Murdiya, Fri
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

The crude oil based transformer insulation has several issues i.e. non-environment friendly, non-biodegradable, non-reneweble, and rarely. Vegetable oil is an alternative transformer insulation which is Crude Palm Oil based RBDPO Olein. This paper proposes study to investigate characteristic the AC breakdown voltage referring to IEC 60156-95 standard to apply sphere electrode of RBDPO Olein prior water content reduction, post water content reduction, and converting fatty acids into Methyl Ester. Breakdown voltage also look into the effect of gap electrode and affectivity of sphere electrode scheme. The experiment has shown the breakdown voltage have increased significantly after various samples of RBDPO Olein being reduction the water content, has compered to IEC 156 standard with the value of (30 kV/2.5 mm). The gap of electrode has shown a significant value on breakdown voltage measurement result. In the mean time to measure the effectivity breakdown voltage of sphere electrode scheme, the Mineral Oil is deployed with complied to IEC 156 standard. The measurement result shows lower then IEC 60156-95 standard was 68,73 %. The experiment also shown the density measurement, the viscosity measurement, the dissolved gas analysis measurement, and dielectric dissipation factor measurement achieve RBDPO Olein less water concentration.Keywords: RBDPO Olein, Breakdown Voltage, Sphere Electrode, IEC 156 standard, and IEC 60156-95 standard.
Karakteristik Tegangan Tembus AC Pada Material Isolasi Padat Campuran Epoxy Resin Dengan Cangkang Kelapa Sawit Pesa, Yan Habibillah; Murdiya, Fri
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 1 (2017): Wisuda Februari Tahun 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Abstract—Epoxy resins are the solid insulation that are widely used to increase the high voltage insulators. In order to increase the dielectric and mechanical strength of epoxy resins can be mixed by using materials such as alumina, palm kernel shells and cnt (carbon nano tubes). From this research of epoxy resin mixed with palm kernel shells with a diameter of 1 mm looks the electrical breakdown characteristics uniquely. With the addition of palm kernel shells can raise breakdown voltage of epoxy resin, compared to pure epoxy resin. The increasing of breakdown voltage is affected by the dielectric strength of palm kernel shells were higher rather than epoxy resin. Discharge currents were recorded from the measurements at laboratory on samples showed different results. At the time of the solidinsulator is approached the electrical breakdown, discharge currents can have a lot of pulses. From these results, a mixture of epoxy resin and palm kernel shells can be used as a new insulator. The properties ofdielectric strength and discharge currents that occur at the time of measurement in the lab shows the different and unique.Keywords ; epoxy resin, palm kernel shell, breakdown voltage, discharge current
Molecular Docking on Azepine Derivatives as Potential Inhibitors for H1N1-A Computational Approach Frimayanti, Neni; Murdiya, Fri; passarella, rossi
ICON-CSE Vol 1, No 1 (2014)
Publisher : ICON-CSE

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Abstract

Azepine are an important class of organic compounds. They are effective in a wide range of biological activity such as antifeedants, antidepressants, CNS stimulants, calcium channel blocker, antimicrobial and antifungal properties. In our continue efforts to search for a potent inhibitor for H1N1 virus using molecular docking. In this study, 15 azepine (ligands) derivatives were docked to the neuraminidase of A/Breving Mission/1/1918 H1N1 strain in complex with zanamivir (protein). The Cdocker energy was then calculated for these complexes (protein-ligand). Based on the calculation, the lowest Cdocker interaction energy was selected and potential inhibitors can be identified. Compounds MA4, MA7, MA8, MA10, MA11 and MA12 with promising Cdocker energy was expected to be very effective against the neuraminidase H1N1.
ANALISIS KORELASI KAWAT TANAH DENGAN TAHANAN PENTANAHAN TERHADAP BACK FLASHOVER Andrean, Novri; Murdiya, Fri
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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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.
KARATERISTIK TEGANGAN TEMBUS GAS ARGON (AR) DENGAN TEGANGAN TINGGI ARUS BOLAK-BALIK Faruqi, M Javad; Murdiya, Fri
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

In electric power systems, there are many aspects that must be considered for its operation that is, conductors, insulators, and other electrical system equipment. Especially on insulators, good insulation quality is required to ensure reliability and quality of electric power distribution to consumers. In industrial gas insulation is often used because of its dielectric strength is greater than the other isolation. In general the gas insulation used SF6, N2, and CO2 has good dielectric strength. In this study, the author tries to test the isolation of another alternative gas that is in the form of argon gas. In the test of this research aims to enrich the treasury of the data from testing the penetrating tension with argon gas isolation and as a preliminary study of argon gas isolation in the test of penetrating voltage with high-voltage AC. Tests conducted using variations of electrodes and gas pressure as much as 20 times the test so that the results obtained in the form of breakdown voltage and air correction factor. Keywords: Argon, Electrode, Breakdown Voltage, High Power Plant AC, Air Correction Factor
THE PERFORMANCE OF SURFACE BARRIER DISCHARGE IN MAGNETIC FIELD DRIVEN BY HALF BRIDGE SERIES RESONANCE CONVERTER Murdiya, Fri; Febrizal, Febrizal; Amri, Amun
Journal of Mechatronics, Electrical Power and Vehicular Technology Vol 8, No 2 (2017)
Publisher : Research Centre for Electrical Power and Mechatronics, Indonesian Istitutes of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/j.mev.2017.v8.95-102

Abstract

This paper reports an application of a series resonance converter as a high voltage generator to drive a surface barrier discharge with a magnetic field. The high voltage was about 5 kV with the frequency of 25 kHz. It was connected to circular aluminum plates as the anode electrode and a rectangular aluminum plate as the cathode electrode. These electrodes were separated by a glass dielectric as the barrier. The experiment result indicated that the discharge current with magnetic field was lower than without magnetic field. The plasma on the surface barrier with magnetic field was more luminous than without magnetic field. It also indicated that the area of Lissajous diagram for the surface barrier discharge with magnetic field was slightly decreased than without magnetic field. It could be concluded that the magnetic field affects the plasma progress on the surface barrier. Molecular dynamic (MD) could be used in understanding the ionization process of air molecules. The ionization energies for CO2, N2, and O2 were 0.0502 kcal/mol, 0.0526 kcal/mol and 0.430 kcal/mol, respectively in 1,000 seconds. The highest ionization energy was O2.
DIELECTRIC BARRIER DISCHARGE INDUCED BY PERMANENT MAGNET IN ATTRACTION AND REPULSION CONDITIONS FOR OZONE GENERATOR Murdiya, Fri; Saputra , Ivan
International Journal of Electrical, Energy and Power System Engineering Vol. 3 No. 1 (2020): International Journal of Electrical, Energy and Power System Engineering (IJEEP
Publisher : Electrical Engineering Department, Faculty of Engineering, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (536.607 KB) | DOI: 10.31258/ijeepse.3.1.6-12

Abstract

Ozone is used in various area including medicine, drinking water treatment and waste treatment. Ozone can be produced using dielectric barrier discharge which is supplied by high voltage. High voltage occurs in the dielectric barrier discharge such as air gap that it is as a result of the failure of air in maintaining its insulator properties. Power supply used in this study is a parallel resonant push-pull inverter using a fly back transformer. In order to produce good plasma in producing ozone, a magnetic filed is added to dielectric barrier discharge. In this study, a magnet was placed on each anode and cathode electrode with the condition of attraction (model I) and repulsion (model II). The addition of two magnets to each electrode was also carried out under the conditions of attraction (model III) and repulsion (model IV). It is shown that the plasma intensity in the model I and III was higher than model II and IV. The discharge current in the model I and III was higher than model II and IV. The highest ozone concentration was model III and the lowest ozone concentration was in model IV. Model I had a higher ozone concentration than model II. 
THE PROPERTIES OF NITROGEN GAS BREAKDOWN VOLTAGE UNDER DIRECT CURRENT POSITIVE POLARITY Murdiya, Fri; Firdaus; Pardede, Tumpal; Hamdani, Eddy
International Journal of Electrical, Energy and Power System Engineering Vol. 2 No. 2 (2019): International Journal of Electrical, Energy and Power System Engineering (IJEEP
Publisher : Electrical Engineering Department, Faculty of Engineering, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (321.408 KB) | DOI: 10.31258/ijeepse.2.2.7-10

Abstract

The type of insulation gases that are usually used in the power circuit breaker (circuit breaker) is the sulfur hexafluoride (SF6) gas, nitrogen (N2) and carbon dioxide (CO2). Most of the electric power systems are using insulating materials such as sulfur hexafluoride (SF6). Sulfur hexafluoride gas (SF6) has a higher dielectric strength than the air. However, Sulfur hexafluoride (SF6) gas is not friendly environmentally and very impact on global warming. The purpose of this study was to test the breakdown voltage of nitrogen gas (N2) (more friendly environmental) as alternative insulation of sulfur hexafluoride (SF6) gas. This study was used sphere and needle electrodes with a distance of 0.5-2 cm and a pressure of 1-4 bar; it was tested for 20 times. From the test results, it obtained that the breakdown voltage of sphere electrodes is more significant than the needle electrodes. Sphere and needle electrodes with a distance of 2 cm and a pressure of 4 bar have a most excellent value of breakdown voltage at the voltage of 140 kV and 79 kV, respectively.
Analisa Pemasangan Insulator Pada GSW/Kawat Tanah Tower Transmisi 150 KV Di PT PLN (Persero) P3B Sumatera Mutaqin, Cecep Zaenal; Murdiya, Fri
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

PT. PLN (Perseo) P3BS is part of PT PLN (Perseo) which specializes in high voltage and extra high voltage Overhead Line Transmission in Sumatera Island. Overally PT PLN P3BS has several assets of transmission i.e transmission tower with total of 20.110 units. Most of towers high between 30-46 meters. However, many line outage because frome lightening strike to Overhead Line Transmission. The Sumatra island position in the tropical zona which is prone to suffer from lightning strike.The installation or modification of lightning protection need to improve the reliability of transmission from lightning strike. PT PLN (Persero) P3BS has been done several ways to minimize the disturbance caused by lightning strike, such as by modifying GSW in order to have self grounding and insulated to the tower.Study has been done to knowing information about advantages or disadvantages in the utilizing of insulators on GSW simulated using ATP-Draw, normal simulation and modified GSW simulation. Then, both models are exposing to the lightening impulse voltage with the amplitude of 10 kA to 200 kA respectively.The modified GSW earth grounding system with the addition of insulators provides more resistance to the back flashover on the insulators lines and the reliability is increased. In the end, this modified GSW will get the effective value when it is attached to the tower coordinates which have high lightening potensial.Keywords : high voltage and extra high voltage Overhead Line Transmission, lightning density, lightning impulse voltage, GSW, ATP Draw.
Analisis Tegangan Tembus Arus Bolak Balik Pada Minyak Nyamplung (Colophyllum Inophyllum) Sebagai Alternatif Isolasi Cair Admaja, Luchman Wira; Murdiya, Fri
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

This study is looking for the ratio of breakdown voltage between mineral oil and Colophyllum Inophyllum oil as an alternative of liquid insulation. The test of oil uses a yellowish half-ball electrode, yellowish ball electrode, and aluminium balls electrode. The value of oil breakdown voltage Colophyllum Inophyllum is higher than mineral oil. By test result, breakdown voltage that a yellowish half ball electrode is higher than by ball electrode and aluminium ball electrode. This study also varies electrode, gap space, and water level on Colophyllum Inophyllum oil to determine the effect of breakdown voltage. Less water level in oiled higher of value of breakdwon voltage is higher. To be alternative liquid insulation must fulfill with the standared spesifications liquid insulation with Colophyllum Inophyllum oil has been met some certain criterias such as breakdown voltage, flash point, viscocity, and water content. On the other side spesifications of density and pour point do not meet yet the standared spesifications of liquid insulation.Keywords: Liquid insulation,breakdown voltage, Colophyllum Inophyllum oil