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Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains
Published by Universitas Riau
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Core Subject : Engineering,
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Articles 3,145 Documents
 60   61   62   63   64 
Perancangan Kontrol Dan Monitoring Level Ketinggian Air Di Waduk Bagian Hulu Untuk Meningkatkan Efektifitas Kinerja PLTA Koto Panjang Maidi Rizki; Rahyul Amri
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Activity monitoring water levels in reservoirs hydropower Koto Panjang are generally still done conventionally, that is reading of a sign of watershed mounted on the reservoir by way of a return of the power house to a reservoir which on avarage carried done three times a day, because of that is needed design control and monitoring level of water level by using ultrasonic sensor which is controlled from long distance 50 cm minimally until 10 m. The result of reading sensor are sent to microcontroller Arduino Uno for processed and sent by HT and displayed in PC. For displaying the data which received in monitor screen use software of LabView 2012. From the result sensor testing MB7366 able controlling the water level with error presentation 0.011% which is compared with a sign of watershed conventionally in reservoir and added with high time efficiency. From the result of comparison reading water elevation, reading from ultrasonic sensor can improve plant performance 0.03%.Keywords : Ultrasonic Sensor, Arduino Uno, LabView
Analisa Kinerja Proteksi Gardu Induk Garuda Sakti Menggunakan Software Berbasis Visual Basic 6.0 Shely Ayu Febriyanty; Nurhalim Nurhalim; Irsan Taufik Ali
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

PT. PLN (Persero) Garuda Sakti Substation is the center of power settings and load demand as the center of security equipment power system as well as the enter of the process of normalization of the disturbances in the territory of Pekanbaru. The goal of research to determine the quantity of fault,protection performance, and reliability of Garuda Sakti Substation. Besides, produce useful software to calculate the percentage of the quantity of fault, the precentage of protection performanceand reliability of the substation by long outages. Type of this research is qualitative descriptive. Thecalculation is done using software based Visual Basic 6.0. From the data obtained, in 2013-2014 occurred 20 times faults in Transformers and Transmission 150 kV. Protection system that works when the interruption occurs 20 times in the Garuda Sakti Substation at 2013-2014, there are five kinds of relay is: relay OVR / UVR, relay REF / SBEF, rele DF / DT, rele rele UVLS and the entire PMT 150 KV rele has a 100% reliability. Garuda Sakti Substation has good reliability because LOLPvalue in 2013 amounted to 0,234953 days per year and in 2014 of 0,09023 days per year (suitable with the standards of PLN below or equal to 3 days per year).Keywords: Fault, Protection, ENS, LOLP, Reliability Substation, Visual Basic 6.0.
Analisa Ekonomi Penerapan Metode Peak Clipping Dan Stategic Conservation Pada Pola Beban Listrik Sektor Rumah Tangga Di Kota Pekanbaru Badri, Mutiarahma; Nurhalim, Nurhalim; Ali, Irsan Taufik
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

The use of electrical energy by the customers are still not optimum, especially in the evening at peak load periodes. One method to reduce the peak load by applying load management on the customer side (demand side management) which include are peak clipping (PC) and strategic conservation (SC). The analysis was focused on the household load i.e. lamp, television and fan in Pekanbaru. This thesis explores benefit of implementation peak clipping and strategic conservation programs in economic criteria by doing economic calculation at city scale and household appliances. Based on the calculation and analysis, by implementation of peak clipping’s and strategic conservation’s method on lamps, televisions and fans has the potential to result in economic benefits which in fifteenth year NPV becomes Rp. 188.675.730.000,-. Moreover, the implementation of strategic conservation on the each lamps and televisions also has potential result in economic benefits especially for household on fare groups R1/900-2200VA.Keywords : Peak clipping, strategic conservation, economic criteria
Evaluasi Koordinasi Relay Arus Lebih (OCR) Dan Gangguan Tanah (GFR) Pada Gardu Induk Garuda Sakti Pekanbaru Ridha, Khalik Al
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
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Abstract

This study aimed to obtain the optimal setting and should be of 50 MVA transformer protection system at the substation Garuda Sakti Pekanbaru. This study uses observation, that determines which objects will be studied to evaluate the coordination of the relay in the transformer of 50 MVA substation Garuda Sakti Pekanbaru. With the data obtained as a diagram of the distribution network of the line (SUTM) substation Garuda Sakti Pekanbaru along with CB data, the transformers, relay specification OCR and GFR and tuning existing conditions relay, and additional data that support for this thesis as load data and daily etc. From the calculation results with existing data in the field is still in appropriate conditions (the difference is not too much), so it can be concluded that the overall arrangement of OCR and GFR in the field is still in good condition. OCR for relay settings and GFR in the feeder has about the same value at which the TMS for OCR and GFR each 0,154s 0,15s in calculations and in the field to OCR, and 0,103s in the calculation and in the field with 0,15s GFR, but there relay settings no longer appropriate that the relay settings and GFR OCR on the side of the entrance, where TMS and TMS = 0,3s = 0,3s in other words if there is a short circuit fault then the relay will take a long time to work. So setting relay OCR and GFR incoming side that is in the field must be set back.Keyword : OCR , GFR
Pirolisis Kulit Pinus Merkusii Menjadi Bio-Oil Menggunakan Katalis Mo/Lempung Cengar Inget Yester Yunanda; Syaiful Bahri; Edy Saputra
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Increasing population and industrial activities in Indonesia caused the consumption of petroleum increased while petroleum reserves continue to decline, so is very important of searching for alternative energy sources instead of petroleum. the biomass of pine bark considered as waste that pollutes the environment it can be used as source of fuel to produce bio-oil by means of pyrolysis using catalyst Mo/ Clay. The purpose of this research is to make bio-oil from pine bark using a catalyst Mo/clay by pyrolysis process, as well as test physical properties of the bio-oil, and to determine the effect of variation the carrier of the catalyst metal catalyst weight variations against of biomass. In this research pine of bark by the size of -60+80 mesh, 50 grams, 500 ml silinap and catalyst Mo / clay inserted into of pyrolysis reactor. This process conducted at a temperature 320oC and the stirring speed of 300 rpm operate for about 120 minutes by flowing nitrogen gas. For the optimum yields obtained at 1% catalyst Mo/clay as much as 9% of biomass that is equal to 68.46%. The test results physical properties obtained density of 0.78 g/ml, 1.77 cSt viscosity, acidity 25.79 mg NaOH /g sample and the flash point 54oC. Results of analysis compound chemical using GC-MS, obtained the dominant chemical components in the bio-oil is 2-Pentene 19.05%, 1-Pentene 9.88%, 8.72% Cyclohexane, Pentane 7.7% and Silane 3, 32%.Keywords: biomass, bio-oil, catalyst mo/clay, pine bark, pyrolysis
Pengaruh Konsentrasi Completion Fluid Terhadap Laju Swelling Clay Pada Sumur Produksi Minyak Bumi Bramansyah Riswanda; Bahruddin Bahruddin; Irdoni HS
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
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Abstract

In the process of oil production wells maintenance, sometimes it has to face containing mud (clay) formations and this situation can detain the process of well maintenance and damage downhole equipment, especially pumps because of clay swelling. This study intends to determine the concentration effect of completion fluid to clay swelling and determine the optimum completion fluid concentration In this study, KCl and XCD polymer has been chosen as the inhibiting compound of clay swelling. Concentration used is 2%, 4% and 6% for KCl, 2, 3 and 4 ppm for XCD polymer with a ratio between the solution with the clay is 1:8, 1 9 and 1:10. The temperature used is room temperature of 25° C. The results showed that the rate of swelling occurs most rapidly at 2% KCl ratio of 1:8. The phenomenon of swelling clay to a solution of XCD polymer is very small so it can be considered no swelling that occurs, either in 2, 3 or 4 ppm solution of polymer XCDKeywords: clay, swelling, oil producer well, KCl, XCD polymer
Pengaruh Suhu Dan Waku Sintering Terhadap Pembuatan Foam Glass Menggunakan Limbah Pecahan Kaca Dan Abu Terbang (Fly Ash) Dari Pabrik Sawit Luci Octaria; Ahmad Fadli; Bahruddin Bahruddin
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Foam glass is a material can be used as a insulation acoustic. The objective of this research is to investigate the effect of sintering temperature and time sintering on the physicalproperties of foam glass preparation from sheet glass and fly ash using dolomite as foaming agents. Slurry was made with mixed fly ash 50wt% and powder glass 50wt% incorporated indolomite 8wt% and strirred for 30 minutes; 300 rpm. Slurry was dried in oven at oven 105˚C for for 12 hours. Green bodies removed from mold and then it was sintered in the range 750, 900 and 950 oC at the furnace for 10,20,30 minutes. The effect of sintering temperature andsintering time on the shrinkage, porosity, density, compressive strength, microstructure and crystalline phases (XRD) were investigated. As the sintering temperature range 750oCthe density, compressive strength, shrinkage increased while the percentage of porosity decreased however as sintering temperature 900-950oC density and compressive strengthdecreased but percentage porosity increased. Furthermore, the sintering time increased the bulk density, compressive strength, shrinkage increased while the percentage of porositydecreased. The shrinkage, percentage of porosity, density, and compressive strength of the produced foam glass for insulation were 9,28-20,36%; 63-66%; 0,85-0,91 g/cm3; 1,53-1,69MPa; respectively. The optimum processing for producing foam glass for insulation was to use sintering temperature 900oC, time sintering 30 minutes.Keywords: foam glass; foaming agent; morphology; sintering
Pirolisis Biomassa Kayu Pinus (Wood Pine) Dengan Katalis Mo/Lempung Menjadi Bio-Oil M Arfi Adharyandy Firman; Syaiful Bahri; Khairat Khairat
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
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Abstract

Indonesia high dependence on fossil fuels from year to year makes the conditions of dwindling fossil fuel reserves. This condition implies the need to optimize the use of renewable energy in order to maintain the availability of energy in the future. An alternative of renewable energy and eco friendly bio-oil. Bio-oil can be produced by pyrolysis process of the pine wood biomass with a Mo/Clay catalyst. This research examines the influence of variations containing Mo (0%, 1%, 2% and 3% w/w) and variations in the weight of the catalyst, Mo/clay (3%, 5% and 7% w/w) in the pyrolysis determine fir wood into bio-oil against the yield obtained and determine the physical and chemical properties of the bio-oil produced from pine wood pyrolysis process. In this research, pine wood biomass, as much as 50 grams with a size of 100 mesh, silinap 500 ml, and the catalyst Mo/clay incorporated in the pyrolysis reactor. Pyrolysis is carried out at 320oC and 300 rpm stirring speed for 120 minutes carried out by flowing nitrogen gas (N2) as an inert gas. The results showed that the optimum yield 61.89% was obtained on the catalyst, Mo/Clay 5% w/w with Mo metal content of 3% w/w. The result of the physical and chemical properties, obtained by the density (0.967 g / ml), viscosity (6.459 cSt), acidity (105.282 mg NaOH / g sample) and flash point (48oC). The results of chemical composition analysis by GC-MS, chemical components of the dominant acquired bio-oil m methylcyclohexyl bromide 9.42%, 3-butene-1,2-diol, 1- (2-furyl) - 6.95%, 2,2,3,3-tetramethyl butane 6.12%, cis-2,2-dimethyl-4-decene and 4.58% 1-propene, 2-methyl, tetramer 3.78%Keywords: Biomass, bio-oil, Mo/ clay catalyst, wood pine, pyrolysis
Analisis Kolam Retensi Sebagai Pengendalian Banjir Genangan Di Kecamatan Payung Sekaki Desyi Astuti; Siswanto Siswanto; Imam Suprayogi
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

The problems that occurred in the city of Pekanbaru precisely in the District Payung Sekaki Area that AKAP terminal road Bandar Raya Payung Sekaki namely flood inundation. Construction of retention ponds is one of the strategic measures that could be considered in an effort to control flooding in the city of Pekanbaru. From the calculation of flood discharge plan using Rational Method obtained flood discharge plan that is equal to 20,482 m3/s. Areas of study is divided into 9 subcathment which in total was 108,313 ha. From the analysis using EPA SWMM 5.0 obtained capacity retention pond is 18.000 m3 while the total volume of the incoming flood retention pond in the amount of 272.082,89 m3 thus the effectiveness of retention ponds to control floods in the amount of 7,35% with a return period of 25 years of planning.Keywords: flood discharge, retention ponds, flood control
Pengaruh Abu Dasar (Bottom Ash) Sebagai Bahan Substitusi Pasir Pada Sebagian Sifat Beton Segar Dan Beton Keras Afrianda, Yogi; Kurniawandy, Alex; Djauhari, Zulfikar
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
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Abstract

The research is a continuation of previous research that aims to obtain the characteristic of fresh and hard concrete using bottom ash as substitute material sand on normal concrete. At this stage of research focused on analyzing the bulk density, workability, permeability and sulfate resistance. The percentage of bottom ash waste that is used are 0% and 30% of the weight of the sand. The results show that using 30% of bottom ash decrease the workability and bulk density on concrete. Meanwhile, the use of 30% bottom ash also increase the value of permeability on the concrete. On testing of sulfate resistance, concrete with 0% of bottom ash increases the compressive strength at age of 28 days, then will decrease at the age of 56 days and 90 days. As well as on the concrete with 30 % of bottom ash, the compressive strength decreases at the age of 56 and 90 days.Keywords : bottom ash, bulk density, workability, permeability, sulfate resistance

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