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SIMULASI SISTEM PROTEKSI MOTOR INDUKSI 3 FASA TERHADAP SUPLAI TEGANGAN TIDAK SEIMBANG DENGAN METODA SIMULINK I Kadek Dwi Artika Putra; Wayan Arta Wijaya; I Gusti Ngurah Janardana
Jurnal SPEKTRUM Vol 8 No 3 (2021): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (485.212 KB) | DOI: 10.24843/SPEKTRUM.2021.v08.i03.p8

Abstract

The most widespread use of AC electric motors is three-phase induction motors, almost90% of motor applications in the industry use three-phase induction motors. The operation of 3phase induction motors generally has voltage imbalance disorders. Voltage imbalance affectsseveral things, including losses and efficiency. This study uses simulation method with the aimto determine the influence of unbalanced voltage on the characteristics of 3 phase inductionmotor and how to secure a 3-phase induction motor when it gets an unbalanced voltage supply.The result of this simulation obtained the smallest efficiency is 56.8% in the voltage dropcondition in one phase and 78.4 in the voltage drop condition in all three phases (R, S and T)with voltage asymmetry of 20% and the biggest loss is 11 406 Watts in the voltage dropcondition on one phase with voltage asymmetry of 20%. In the simulation of 3 phase inductionmotor protection system of unbalanced voltage supply obtained by tripping breaker fastest thatis at 0.201 s seconds with drop voltage condition 15% in phase S. 3 phase induction motorsafety pattern when getting unbalanced voltage supply is to use an unbalanced voltage safetysystem that has faster tripping delay time.
ANALISIS PENGARUH NILAI TAHANAN PEMBUMIAN TITIK NETRAL TRANSFORMATOR TERHADAP PERUBAHAN THD ARUS DAN RUGI-RUGI DAYA DI RSUD KLUNGKUNG I G.B. Satcitananda P; I W. Rinas; I G.N. Janardana
Jurnal SPEKTRUM Vol 7 No 1 (2020): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (343.769 KB) | DOI: 10.24843/SPEKTRUM.2020.v07.i01.p27

Abstract

Harmonics causes an increase in the current flowing in the neutral wire due to the use of unbalanced non-linear loads. THDisimulation was conducted in this study using MATLAB Simulink software and calculating power losses. Based on themeasurement results it is known that THDi transformer one exceeds the standards set by IEEE 519-2014. THDi simulationresults in the existing conditions show the percentage of phase R of 17.27%, S phase of 16.40%, phase T of 16.24% with acurrent flowing on a neutral wire of 19.64 A. Based on the results of simulations with earth resistance 11? shows thepercentage of THDi in the R phase 15.69%, S phase 14.70%, T phase 9.83% and the current flowing on the neutral wire is1.013 A. When the earth resistance is changed to 8? THDi in the R phase by 15.62%, the phase S 14.67%, T phase 9.81% withcurrent flowing on neutral wire 1,297 A. While the earth resistance is reduced to 4? THIn the R phase 13.57%, S phase 14.51%,T phase 9.80% and the current flowing on the neutral wire is 2,518 A. The power losses in the one-time transformer when theexisting conditions are 8,796 kW, while the earth resistance 11? is 6,079 kW, while the ground resistance 8? is 6,032 kW, andwhen 4? is 5,880 kW.
REDISAIN SISTEM PEMBUMIAN DI HOTEL X JIMBARAN Khana Eland N.A; I.G.N Janardana; I.W Arta Wijaya
Jurnal SPEKTRUM Vol 8 No 2 (2021): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (626.001 KB) | DOI: 10.24843/SPEKTRUM.2021.v08.i02.p1

Abstract

Due increases develop the electric power system, the more effective security system is needed.One of the security systems is the earthing system at Hotel X Jimbaran. After takes measurement theaverage measurement results of 1.14 ? ~ 2.47 ? at four different location points that cause the flow ofovercurrent or overvoltage to electrical equipment. This study purpose to improve the existing earthingsystem to achieve earthing resistance <1? according to IEEE standards.This research method consist ofseveral stages, first, survey location to measure the amount of soil resistance (R) to calculate the value ofsoil resistivity (?) then calculate the value of earthing resistance according to the type of earthing systemto achieve an earthing resistance <1 ?, including the Vertical One Earthing Electrode System at Depth Z,Horizontal Earthing One Electrode System, Two Earthing Electrode System with S>L conditions, TwoEarthing Electrode Earthing System with S<L conditions, Plate Earthing System and Grid-Rod EarthingSystem.The calculation analysis results design of the earthing system with earthing resistance <1? each fault location obtained different results. Building 1000 reccomended to choose plate earthing system inwetsoil conditions with the result of earthing resistance 0,9594?; Building 2000 reccomended to choose gridrod earthing system in dry soil conditions with the result of earthing resistance 0,84?; Building 3000reccomended to choose grid-rod earthing system in dry soil conditions with the result of earthingresistance 0,976?; and Ballroom reccomended to choose grid-rod earthing system in wet soil conditionswith the resultof earthing resistance 0,865?. Each location according to the analyzed earthing systemrecommendations, the most economical prices were calculated below IDR 10,000,000,- (Ten MillionIndonesia Rupiah Currency), at Building 1000 with a total cost of IDR.4.034.000,-; Building 2000 with atotal cost of IDR.6.698.650,-; Building 3000 with a total cost of IDR.7.448.200,-; and Ballroom with a totalcost of IDR.7.352.200,-.
ANALISIS DAN DESAIN SISTEM PEMBUMIAN GARDU DISTRIBUSI PADA LAHAN SEMPIT DI TANAH BERBATU I W. A. Premei Artha; I G.N. Janardana; I W. Arta Wijaya
Jurnal SPEKTRUM Vol 8 No 1 (2021): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (682.936 KB) | DOI: 10.24843/SPEKTRUM.2021.v08.i01.p11

Abstract

A disturbance in the groundhing system is caused by a disturbance current which isflowed to the ground which will cause a difference in tension on the ground surface dueto high ground resistance. On rocky soils with ground resistance in excess of 200 ?-meters it is very difficult to determine a suitable grounding system. The purpose of thisresearch is to analyze the design of an appropriate earthing system on narrow land onrocky ground which will be used as a reference for selecting the grounding system at atKampus Unud Jimbaran feeders. The method used is to take measurements on rockysoil then measure and determine the proper earthing design to use. The optimal resultsobtained for the grounding system on narrow land on rocky soil is a grid groundingsystem because it produces the lowest earthing resistance value in dry soil conditionsand wet soil conditions, namely 0.6269 ohms on dry soil and 0.4314 ohms on wet soil. has met the standard according to IEEE std 80-2013, which is <1 ohm with 16x16 rodsin an area of 4 m2.
RANCANG BANGUN PROTOTIPE PEMANTAU KEBOCORAN GAS MENGGUNAKAN SENSOR MQ-6 BERBASIS NodeMCU 8266 Anandita Praja Dwitama; I Gusti Ngurah Janardana; I Wayan Arta Wijaya
Jurnal SPEKTRUM Vol 8 No 1 (2021): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (280.668 KB) | DOI: 10.24843/SPEKTRUM.2021.v08.i01.p2

Abstract

Liquefied Petroleum Gas (LPG) leak detection and monitoring system is a step to anticipatethe danger of gas leaks. BPBD data for 2016 - 2020 fires due to LPG gas leakage are 50 cases,handling is still manual. The design of this prototype uses the Arduino NodeMCU 8266 module as themain controller. The sensor used by the MQ-6 sensor is suitable for detecting propane and butanegas in LPG. In order for the sensor to work optimally the sensor is set at a distance of 10 cm from thegas source. The prototype uses a solenoid valve which is a valve controlled with AC or DC electriccurrents through the selenoids. Buzzers and notifications via the telegram application complement theoutput of the prototype if a gas leak is indicated. The duration of the notification is sent depending onthe signal strength of the WiFi / provider used, while the duration of the buzzer sounds as long as thedetected gas level exceeds the value of the sensor set. The results achieved in the study, namely thegas leak monitoring prototype using the MQ-6 sensor based on NodeMCU 8266 was very effective.MCU node 8266 can be used to open / close valve electronics automatically. The ideal distance toread the gas leak smoke is 10 cm. The time the notification is sent depends on the signal strength ofthe WiFi / provider used, in this study it was found 80-92 dbm, the duration of the buzzer sounded aslong as the gas level was detected more than 200 ppm.
RANCANG BANGUN SISTEM MONITORING NILAI pH DAN KADAR KEKERUHAN AIR PADA KOLAM TERNAK KODOK LEMBU BERBASIS IoT Ketut Dharma Yasa; I Gusti Ngurah Janardana; I Nyoman Budiastra
Jurnal SPEKTRUM Vol 7 No 2 (2020): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (215.703 KB) | DOI: 10.24843/SPEKTRUM.2020.v07.i02.p5

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Frog thigh meat is one of the potential non-oil and gas export commodities. In 2011-2012 thevalue of frog thigh meat exports decreased from 4.152 tons to 2.694 tons. The scarcity of toadsavailable is due to massive hunting and the spread of red leg syndrome. Red leg syndrome is causeddue to lack of monitoring of the condition of the bull frog pond. A harassment solution is needed byutilizing the Internet-based technology of Things as an effort to create an environment, especially theright water content of the bull frog, so as to reduce the number of bull frogs affected by the disease.This tool is able to monitor pH values and water turbidity levels in aquaculture ponds through theThingspeaks platform. The test was carried out in one of the Beetle Fodder Animal HusbandryGroups located in Buduk Village, Mengwi District, Badung Regency. It was found that the pH value inthe pond was 6.5-8 and the turbidity level was 3,8-9 NTU. Based on these results, aquaculture pondsare in accordance with water standards for the life of a bull toad with a pH value of 6.5-8.5 andturbidity levels of 1.2-11.6 NTU
PEMANFAATAN PEMBANGKIT LISTRIK TENAGA SURYA SEBAGAI CATU DAYA LISTRIK PADA KELOMPOK USAHA PERTANIAN I G N Janardana; I W Arta Wijaya
Jurnal SPEKTRUM Vol 8 No 1 (2021): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (388.532 KB) | DOI: 10.24843/SPEKTRUM.2021.v08.i01.p7

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It is time for solar power plants to supply electricity to agricultural businesses to avoiddependence on oil-fired electricity. Most agricultural businesses find it difficult to get electricitybecause they are located far from the center of the PLN network. The purpose of this study wasto determine the potential and design of PLTS for electricity needs in agricultural businesses.The method of analysis was carried out descriptively by calculating the primary data. The resultsof the analysis on each load requirement show that for a 500 watt load, 24 panels series SP-100-M36 Part Number 53-067, SR-500 - S-12V inverter, minimum battery 4666.66 Ah 47 unitsof Model SMT12100S are needed, 1000 watt load required 47 panels series SP-100-M36,Growatt 1000S inverter, 9333.33 Ah batteries 94 pieces Model SMT12100S, 1500 watt loadrequired 71 panels specification series SP-100-M36, Growatt inverter specification 1500Sminimum capacity battery 14000 Ah 140 pieces Model SMT12100S, 3000 watt load required142 pieces of SP-100-M36 specification panels, Sunny Boy 3000 TL inverter specifications,batteries with a minimum capacity of 28000 Ah 280 SMT12100S.Key words: Electric power, renewable energy, PLTS.
ANALISIS SISTEM PEMBUMIAN TOWER SALURAN TRANSMISI DARI GARDU INDUK KAPAL – GARDU INDUK GIANYAR IGP Agung Satya Wicaksana; IW Arta Wijaya; IGN Janardana
Jurnal SPEKTRUM Vol 8 No 4 (2021): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (576.567 KB) | DOI: 10.24843/SPEKTRUM.2021.v08.i04.p7

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This study aims to improve the earthing value of transmission lines which have an earthvalue less than the standard value off SPLN No 121: 1996, namely 10 and recommend anearthing system that meets the standards. Theemethodduseddissa descriptive method bycalculating the value of the earthing system by following the SPLN standard No. 121: 1996. Thisanalysis consists of several stages, namely a site survey, measuring soil resistance (R) tocalculate the value of soil resistivity (?) then calculating the value of grounding resistance with 5types of grounding systems to achieve grounding resistance 10 , namely one electrodegrounding system, 2 electrode grounding system planted vertically S > L, 2 electrode earthingsystem planted vertically S < L, plate earthing system, and a grid-rod earthing system. Theresults of the research are for paddy fields using a vertical one-electrode earthing system, thevalue is 7.32 ? with a manufacturing cost of Rp. 857,000, on farmland with a vertical oneelectrodeearthing system, the value is 8.36 ? with a manufacturing cost of Rp. 1,363,000, andon clay soil with a vertical one-electrode earthing system, the result is 7.98 ? with amanufacturing cost of Rp. 857,000.
STUDI PERBAIKAN SISTEM PEMBUMIAN UNTUK MENCEGAH KEGAGALAN LIGHTNING ARRESTER PADA PENYULANG SULAHAN BANGLI I Nyoman Julyantara; I Gusti Ngurah Janardana; I Gede Dyana Arjana
Jurnal SPEKTRUM Vol 6 No 4 (2019): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (250.844 KB) | DOI: 10.24843/SPEKTRUM.2019.v06.i04.p4

Abstract

The Feeder of Sulahan Bangli is located in the highlands which are often exposed to natural phenomena in the form of lightning, so the Feeder of Sulahan Bangli often experience interference with over voltage. Lightning Arrester in The Feeder of Sulahan Bangli often experience failure due to overvoltages during lightning surges. In 2016 there were 4 times the overvoltage failure in conventional Lightning Arrester in The Feeder of Sulahan (PT. PLN (Pesero) UP3 East Bali, 2016). The failure of Lightning Arrester in The Feeder of Sulahan Bangli is caused by the interference of backback-flashover, this is caused by the earth resistance value in Lightning Arrester exceeds the standard value <1 ? which is an average of 8 ? so that it needs to be repaired grounding system. In this study an analysis of the area of the grounding system is installed, analyzing the various grounding systems that are suitable in the Feeder of Sulahan, and calculating the cost of each grounding system. The results of calculations and analysis of several grounding systems used by the Grid-Rod grounding system in wet and clay soils are the most optimal type of groundinging system that can be used as a reference for improving the grounding system in The Feeder of Sulahan Bangli with an earth resistance value of 0, 4543 Ohms at a cost of Rp. 5,416,625, - per unit and on a 0.4461 Ohm thick clay soil at a cost of Rp. 8,728,125, - per unit.
PENGARUH DEBIT AIR TERHADAP? PUTARAN?TURBIN?DAN?DAYA?OUTPUT? YANG?DIHASILKAN?PROTOTYPE PLTMH?DENGAN?TURBIN?KAPLAN Ravinda Ariestya Pamungkas; I Wayan Arta Wijaya; I Gusti Ngurah Janardana
Jurnal SPEKTRUM Vol 8 No 2 (2021): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (553.818 KB) | DOI: 10.24843/SPEKTRUM.2021.v08.i02.p19

Abstract

Kaplan turbine is suitable turbine to use in the place that have small water fall (head)but need big water discharge. The problem from this turbine is the turbine need high waterdischarge to test the related parameters but it is too difficult to do because the water dischargeis not constant in the river. Based on the problems described, it is necessary to make a hydropower plant prototype using a Kaplan turbine with a laboratory scale so that it can obtainmaximum output result on a micro hydro power plant. The Method of analysis used is bycalculating the rimary data obtained. Prototype testing in this study uses water discharge thatvaries including 9 liter/s, 10 liter/s, 12 liter/s, 14 liter/s and 16 liter/s. The maximum outputobtained is when the water discharge is 16 liter/s which produces a turbine rotation of 228,3 rpmbefore the generator is coupled and 172,5 rpm after the generator is coupled, the generatorrotation is 902,5 rom, the generator voltage is 9,07 Volts, the generator current is 0,56Amperes, generator power is 5,09 Watt, torque is 0,28 Nm, and the efficiency occurs 1,62%.Based on the result of the study, the maximum output obtained is from the water discharge 16liter/s which is the biggest water discharge because an increase in the value of water dischargewill cause the micro hydro power plant performance to increase.
Co-Authors A A G M Pemayun A I Weking A. I. Weking A.A Ngurah Amrita AA. M Pemayun Achmad Noerkhaerin Putra Aggry Saputra Anandita Praja Dwitama Ananta Wijaya Ariany Frederika Biantoro, Kharis C G I Partha C G I Partha Dewa Agung Krishna Arimbawa P dwi ardiada Fachri Zamzami Ferry Ardiansyah Fransiskus Xaverius Saav Agus I B Gede Manuaba I G. P. A. Wartama I G.B. Satcitananda P I G.N Nanda Ramdipa Amerta I Gede Agus Handi Saputra I Gede Dyana Arjana I Gede Feryanda Fransiska I Gede Putu Aditya Kresna Artha K I Gst Agung Putu Raka Agung I Gusti Putu Andhita Mahayana I Kadek Agus Wahyu Raharja I Kadek Dwi Artika Putra I Komang Suarjana I M Dwijaksana I M Suartika I Made Darmayusa I Made Dhanan Pradipta I Made Mudiarta I Made Suartika I Made Surya Ganesputra I Made Suwartama Wijaya I Nyoman Angga Prabawa I Nyoman Apriana Arta Putra I Nyoman Arnawan I Nyoman Budiastra I Nyoman Budiastra I Nyoman Julyantara I Nyoman Mudana I Putu Andrean Wiranata I Putu Arich Arthawan I Putu Bayu Suka Yasa I Putu Nanda Nugraha Utama I Putu Nova Suciawan I W A Wijaya I W Arta Wijaya I W Rinas I W. A. Premei Artha I W. A. Wijaya I W. A. Wijaya I W. Rinas I W.A Wijaya I Wayan Arta Wijaya I Wayan Arta Wijaya I Wayan Rinas I Wayan Sukerayasa I.W.A Wijaya I.W.A. Wijaya Ida Bagus A. Swamardika Ida Bagus Adisimakrisna Peling Ida Bagus Gede Wira Negara Ida Bagus Made Pandwa Putra IGP Agung Satya Wicaksana INA Seputra IWA Wijaya IWY Swara I_M. Suartika K A Kartika Sari Kadek Mirah Mahadewi Kadek Paramarta Dwi Parna kadek rudi andika setyawan Kadek Widipratama Ketut Dharma Yasa Khana Eland N.A Kharis Biantoro Lie Jasa M.S. Ugustra Made Andi Kusumayana B Made Dinda Pradnya Pramita Ngakan Putu Satriya Utama Ni Wayan Dian Puspita Sukma Dewi Nia Paramitha NPG Suardana Nyoman Karnata Mataram P A Mertasana Putu Quentin MP Putu Sri Merta Suryani Quentin MP, Putu Ravinda Ariestya Pamungkas Riantika, I Gede Rama Rinas, I W. Rukmi Sari Hartati Satcitananda P, I G.B. Satriyo Agung Pribadi Tjok Gede Indra Partha W G Yoga Ananta Wijaya W. Arta Wijaya W.G. Suharthama Wahyu Adi Merta Wayan Gede Ariastina Yanu Prapto Sudarmojo Zulfachmi, Zulfachmi