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Journal : Jurnal technoscientia

EVALUASI KEMAMPUAN TRANSFORMATOR DAYA PADA GARDU INDUK 150 KV WATES Suyanto, Muhammad; Setyowibowo, Ridwan; Pambudi, Prastyono Eko
Jurnal Teknologi Technoscientia Vol 10, No 2 (2018): Vol 10 No 2 Februari 2018
Publisher : IST AKPRIND YOGYAKARTA

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Abstract

Increased population growth, economy and insfrastructure development, especially the construction of airports in Kulon Progo district indirectly impact on power availability. An Increase electric load in each year will affect the capacity of the power transformer at the 150 KV Wates substasion. With increasing electric load it will be the greater the electrical load borne by teh power transformator, so to prevent the occurence of overload, it is necesarry to eavaluate the power transformer capability by doing electric load prediction. In this reseacrh, the method used is trend analysis. For power transformer-I use exponential trend with MAPE value of 2,91% obtained estimate of load in year 2019 equal to 25,74 MVA where loading already exceed 80% While power transformer-II using the quadratic trend with MAPE of 1,19% obtained by the estimated load in 2025 of 52,29 MVA, after the addition of a special load plan, obtained load estimation in 2019 has reached 80%. So that in the year 2019 has been done addition of new power transformer, and in year 2024 can be done uprating on power transformer-I.
ANALISIS RESISTANSI PENTANAHAN SEBAGAI UPAYA UNTUK ANTISIPASI SAMBARAN PETIR DI DAERAH PERBUKITAN WILAYAH BANTUL Suyanto, Muhammad; Mulyaningsih, Sri
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 2 No 1 Agustus 2009
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (569.36 KB) | DOI: 10.34151/technoscientia.v2i1.416

Abstract

The aim of this study was to find an information about varying soil resistant along residence area in Bantul Regency. The aim of the study is to compiling fixed grounding system. Factors controlling the grounding are ground resistivity, electrode resistivity, environmental condition, size and shape of the system. Ground resistivity needs a good grounding system, that accomplish to savety standard for people and its equipments. The ground system should be able to prevent dangerous caused by flash, whenever nuisance come out. It parposes to overcoming the current of ground system nuisance of electricity power, in order the power could be flowing to the ground, directly; not to the equipments. The resistivity data resulted from the field work measurements, shows some different va-lues in each place, that probably caused by different kinds of soils. For examples are re-gusol soil has a resistivity value of 22.05Ω, latosol 17.04Ω, and red mediteran 15.12Ω. Grumusol soil has resistivity of 7.8Ω, but after it’s analyzed by grounding with 4 electrode, the value is decrease into 4.22Ω. Those are caused by grumusol soil is clayy, while the other soils are sandy. Based of IEEE recomendation of ground resistivity values, home electricity should be <10Ω, while for flash protection should be < 5Ω. Up to now, the solu-tion for quenching the overload power, in order it’s unable to damage the equipments, it’s flowed to the ground directly.
PERBAIKAN FAKTOR DAYA DENGAN PENAMBAHAN NILAI KAPASITOR SEBAGAI PENGHEMAT ENERGI LISTRIK PADA BEBAN LAMPU FLUORESEN Suyanto, Muhammad
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 3 No 2 Februari 2011
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (162.931 KB) | DOI: 10.34151/technoscientia.v3i2.480

Abstract

The use of electrical energy is made as efficient as possible, therefore to get the economical value, especially in the use of Fluorescent lamps, it is necessary to make an effort how to use energy that approach the installed value. The effort was dane by in cir-cuit tests using fluorescent lamps with different capacitor values and comparing them with economical lamps. Having obtained the capacitor values, the experiment were carried out to collect the actual data of the installed power. The resuls of the experiments were analyzed and showed that the increasing values of capasitors were followed by better power factors so they approached the associated installed powers.
PENINGKATAN DAYA PADA PEMBANGKIT LISTRIK MIKROHIDRO (PLTMh) DI DAERAH IMOGIRI BANTUL JOGJAKARTA Suyanto, Muhammad
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 5 No 1 Agustus 2012
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (685.41 KB) | DOI: 10.34151/technoscientia.v5i1.513

Abstract

In rural areas there is generally a major irrigation canal that serves to irrigate the fields and also has the potential to be used as power plants. Developments Wukirsari Imogiri Bantul area, an agricultural region and its inhabitants have a side job as grate the coconut and make various handicrafts for souvenirs that use raw materials from a particular timber. Development of today's technology provides a variety of environmental impacts, both positive and negative, in the presence of micro hydropower plant in one of the villages in the area Imogiri will certainly add a positive impact for local communities. In the presence of micro-hydro, if night can be used as a means of public street lighting so that security and a sense of anxiety at night reduced incomes and to increase trade group be established to process the materials of wood and iron to take advantage of wood-working equipment that require electricity results from the existing micro-hydro power, yet still very limited relative kapisitasnya. Side activity that utilizes peratan carpentry can not be fulfilled using electricity from existing plants.Therefore we need an increased effort on Micro Hydro Power (MHP) is still very limited relative power. So in this study, is expected to obtain an increase in power can be realized with both and can obtain results in line with expectations.
APLIKASI SISTEM INVERTER 1 FASA DENGAN KAPASITAS BEBAN 1200 WATT Suyanto, Muhammad
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 6 No 1 Agustus 2013
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (369.308 KB) | DOI: 10.34151/technoscientia.v6i1.597

Abstract

Providers Backup Power Supply for Household Electricity Load In automatic, very necessary as an emergency response efforts in the event of termination of electricity to consumers. So with a backup power supply that has been prepared, the electric lighting in the household is not disrupted. The effort is meant is conducted by making a piece of equipment such as power supply 1 Phase Inverter System Design for Load Capacity 1200 Watt, is a piece of equipment that can serve as a replacement power supply but can work efficiently and save energy. After designing and testing tools execute the inverter, it can be some of the results of the designation gauges recorded and performed calculations. The larger the installed load will produce a greater flow, this caused huge load requires a large current flow. At 50-250 cosQ load close to 1, while the 300-1200Watt load cosQ up and down, this happens when the 300-1200Watt load test, the load used in the form of incandescent bulbs. The voltage on the inverter device is sometimes not reached 220 volts when tested. This is due to the voltage source when the test does not reach the stable, and also due to the greater load at the time of testing with mixed loads. Long period of time of an inverter is able to work depends on the quality of the battery and how to use it.
ANALISIS PERBAIKAN SISTEM PENTANAHAN PADA KAKI MENARA SALURAN TRANSMISI TEGANGAN TINGGI 150 KV BANTUL-SEMANU JOGJAKARTA Suyanto, Muhammad
JURNAL TEKNOLOGI TECHNOSCIENTIA Academia Ista Vol 12 No 01 Agustus 2007
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (165.826 KB) | DOI: 10.34151/technoscientia.v0i0.1989

Abstract

The research was carried out to get information about the improvement of gro-unding resistant value in tower feet of-high-voltage network, 150 kV, along tower trans-mission in power station, Bantul, Semanu. A good grounding system is used to flow cur-rent into the ground and prevent the current flow into the electrical equipment if electrical fault occurs. The result of measurement has shown that ground, type grumosol has a low grounding resistant value <10 Ω because its ground texture of clay has high ability to absorb and keep water and has very tiny particles and colloid property. The grounding resistant values of type regusol, litusol, brown latosol and red mediteran are above 20 Ω because of their ground texture, sand and clay. Chemical and physical reaction will take places in soil with clay structure. Its colloid property can tie/hold ion or water and sometimes free salt. The aim of this research is to get information about resistant value of soil type with almost ≤ 5 Ω by installing grounding electrode made from four galvanis steel coated with bronze with 15 mm in diameter, 10 meter long and two ground rods are parallel connected with 2 m each electrode and use counterpoise grounding system model. The result of the improvement is expected to meet standard requirement, SPLN almost ≤ 5 Ω.
PENGARUH VARIABEL CELAH UDARA TERHADAP FLUKS MAGNET PADA GENERATOR PERMANEN MAGNETIK AXIAL FLUKS Abubakar, Syafriyudin; suyanto, Muhammad; Pambudi, Prasetyono Eko
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 16 No 2 Maret 2024
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), Universitas AKPRIND Indonesia Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/technoscientia.v16i2.4670

Abstract

Generators that use permanent magnets do not require initial excitation to produce voltage. where the generator design is an axial flux type using a ceramic type permanent magnet (NdFeB), and uses two flanking stator rotors. For electricity use, the AC voltage is changed to DC voltage using a rectifier for charging the accumulator. The air gap in an axialflux generator is the distance between the rotor and stator. The air gap is also a place for the magnetic field to move through the coils in the stator which ultimately produces a magnetic flux value which will influence the amount of induced voltage produced. The faster the rotation produced, the greater the voltage produced, but the frequency value will also increase, so that this generator is only limited to 400 rpm rotation, at a frequency value of 50 Hz, producing an effective voltage of ± 22 V with an air gap distance ( δ) is 2 mm, the frequency measurement has an error of 10-20 Hz and an error percentage of 5-10%, with the results of the induced current measurement having the same voltage