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Program Studi Teknik Elektro Fakultas Teknik - Universitas Udayana d/a. Kampus Bukit Jimbaran Bali - 80364 Phone/ Fax: +62 361 703315
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Jurnal SPEKTRUM
Published by Universitas Udayana
ISSN : 23023163     EISSN : 26849186     DOI : -
Core Subject : Science, Engineering,
Computer Science & IT Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering
Jurnal SPEKTRUM is peer review journal, published four times a year by the Department of Electrical Engineering, Faculty of Engineering, Universitas Udayana. This journal discusses the scientific works containing results of research in the field of electrical, include: power systems, telecommunications, computers, informatics, controls, and electronics. Authors are expected to include original scientific papers in accordance with the scope of the discussion of this journal including all aspects of the theory and practice are used.
Arjuna Subject : Teknik (semua kategori) - Teknik Listrik dan Elektro
Articles 20 Documents
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Search results for , issue "Vol 6 No 1 (2019): Jurnal SPEKTRUM" : 20 Documents clear
PENYELEKSI BARANG BERDASARKAN TINGGI BERBABIS MICROCONTROLLER ATMEGA 8535 DENGAN KONVEYOR I Gede Krisnu Wardana; Nyoman Gunantara; Nyoman Pramaita
Jurnal SPEKTRUM Vol 6 No 1 (2019): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (200.572 KB) | DOI: 10.24843/SPEKTRUM.2019.v06.i01.p03

Abstract

Problems that often occur in the selection of goods, there are still many industries that make convey-ors as senders only without a selection process. The purpose of this study was to make a high-variable item selection prototype tool using an ATMega 8535 microcontroller. It was found that the prototype goods se-lection tool was based on a high ATMega 8535 microcontroller with a maximum working conveyor. Con-veyor 1 will move if there is an item or object that is left in front of conveyor 1 and stops the goods at the end of the conveyor 1. Conveyor 2 will move if the photodiode sensor has detected the items on the convey-or 1. All tests are performed properly. The photodiode sensor works well to measure the height of objects or items. Further improvements with more complex development prototypes that can be applied to actual industries and factories. This tool can only measure the height of the item from what can be developed or the weight of the item.
Analisa Total Harmonic Distortion dan Losses Setelah Beroperasinya Distributed Generation di Program Studi Teknik Elektro Universitas Udayana Gregorius Reza Dwi Nugroho; I Wayan Rinas; I Wayan Arta Wijaya
Jurnal SPEKTRUM Vol 6 No 1 (2019): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (375.847 KB) | DOI: 10.24843/SPEKTRUM.2019.v06.i01.p18

Abstract

In the Electrical Engineering Study Program, Udayana University, a Solar Power Plant was installed with a power of 26.4 kWp, a Wind Power Plant with a power of 5 kWp and a Diesel Power Plant with a capacity of 20 kVA. The size of harmonics in the electric power system is called Total Harmonic Distortion (THD). THDi's research results at DH Electrical Engineering Building of Udayana University before the operation of Distributed Generation (DG) were that R phase was 9.91%, S phase was 10.86%, and T phase was 9.85%. THDi value after the operation of Distributed Generation, R phase was 16.05%, S phase was 17.53%, and T phase was 15.70%. THDi value with LC filter, R phase was 4.0%, S phase was 5.52% and T phase was 3.97%. THDv value before the operation of Distributed Generation, R phase was 0.08%, S phase was 0.48% and T phase was 0.47%. THDv value after the operation of Distributed Generation, R phase was 0.24%, S phase was 0.44% and T phase was 0.49%. THDv value with LC filter, R phase was 0.01%, S phase was 0.01% and T phase was 0.02%. The results of the research showed that losses before the operation of Distributed Generation were 115.53 Watts and the value of losses after the operation of Distributed Generation had increased to 130.07 Watts.
ANALISIS KUALITAS SINYAL PADA JARINGAN LONG TERM EVOLUTION (LTE) MENGGUNAKAN DATA DRIVE TEST CLUSTER I Wayan Mardika; Gede Sukadarmika; Pande Ketut Sudiarta
Jurnal SPEKTRUM Vol 6 No 1 (2019): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (383.334 KB) | DOI: 10.24843/SPEKTRUM.2019.v06.i01.p08

Abstract

The rapid development of cellular communication technology is inseparable from various problems especially on signal quality. In outdoor areas, the performance of eNodeB that is not optimal may cause communication failure. This research was conducted with the drive test on the L_BUNDARANRENON_PL, L_AKABA_PL and L_MYAMIN_CR to obtain signal quality parameters at Renon cluster area. The results of the drive test obtained compared to the simulation using the Atoll radio planning software with the Hatta Cost-231 propagation model and the Standard Propagation Model. From the comparison results, the margin value is used as a correction factor. The comparison results obtained based on the quality of SINR, The result of using the Standard Propagation Model is closer to the drive test measurement results than using Cost-231 Hatta. However, based on the quality of RSRQ, both propagation models yield almost the same results. Here are found that the correction factor for SINR obtained the Cost-231 Hatta propagation model of 6.15 dB and the Standard Propagation Model model of 6.11 dB. While for RSRQ correction factor the margin for both propagation models is -2 dB
OPTIMASI PEMASANGAN KAPASITOR PADA SISTEM JARINGAN LISTRIK DISTRIBUSI DI BALI MENGGUNAKAN METODE QUANTUM GENETIC ALGORITHM Maria Gusti Agung Ayu Permata; Antonius Ibi Weking; Widyadi Setiawan
Jurnal SPEKTRUM Vol 6 No 1 (2019): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (562.88 KB) | DOI: 10.24843/SPEKTRUM.2019.v06.i01.p14

Abstract

This study optimized the installation of capacitors on the distribution grid system in Penyabangan feeder, Singaraja, Bali using the Quantum Genetic Algorithm method to reduce the impact of increasing reactive currents. This feeder, consisting of 162 buses in which 62 buses are directly connected to the load and 5 buses are connected to medium voltage cosumers. The results of this study are obtained by the capacity of capacitors installed in 31 buses that have a power factor value less than the permitted limit and the power loss values decrease from 0,0674 MW and 0,0546 MVAr to 0,0543 MW and 0,0442 MVAr.
POTENSI DAYA DARI SOLAR CELL TERPASANG SESUAI DENGAN POLA ATAP RUMAH BERBASIS ARSITEKTUR BALI I Nyoman Apriana Arta Putra; Wayan Arta Wijaya; I.G.N Janardana
Jurnal SPEKTRUM Vol 6 No 1 (2019): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (770.614 KB) | DOI: 10.24843/SPEKTRUM.2019.v06.i01.p04

Abstract

This study was conducted to determine the potential power obtained at home with the Balinese roof pattern when developed with renewable energy sources. Solar energy as a source of renewable energy has enormous potential, especially in Indonesia. Balinese architecture-based roof pattern has 4 fields, the north and south side are trapezoidal and the east and west sides are triangular with 350 roof inclination angle. One of Bali's traditional buildings is Bale Sari, which is a case study with an area of ??32.64 m2, length 6.40m and width 5.10m. Bale Sari's roof has a pyramid pattern, each side having the same length and width. Methods performed in this study with manual calculations to find the potential maximum power. The total number of solar panels used is 234 pieces. With this amount, obtained the best potential results on the southern side, with an average power gained of 667.67 Watt. The results are obtained when the sun is at a maximum warming point or precisely when the weather is sunny. The result of the average power potential analysis obtained by solar cell installed on the roof of the Balinese architecture house is 1,935.49 Watt.
ANALISIS PENENTUAN SETTING DISTANCE RELAY PENGHANTAR SUTT 150 KV GIS PESANGGARAN – GI PEMECUTAN KELOD Kholid Hidayatullah; Rukmi Sari Hartati; I W Sukerayasa
Jurnal SPEKTRUM Vol 6 No 1 (2019): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (239.706 KB) | DOI: 10.24843/SPEKTRUM.2019.v06.i01.p19

Abstract

The addition of UGC cable (Under Ground Cable) and equipment rating’s change for the reconfiguration from Air Insulated Swichgear into Gas Insulated Switchgear at Pesanggaran substation. Therefore need to reset distance relay settings so that relays can work more selectively and reliably. Using manual and simulation calculations, the results obtained from distance relay reset GIS Pesanggaran - GI Pemecutan Kelod, with impedance value 1 = 2.055 ?, zone 2 = 5.73 ? and zone 3 = 11.01 ? with time delay at zone 1 = 0 seconds, zone 2 = 0.4 seconds and zone 3 = 1.6 seconds. This setting shows that the reload setting value can secure the line from the 3 phase short circuit fault obtained from the simulation results.
Rancang Bangun Monitoring Level Muka Air Tanah Di Perkebunan Lahan Gambut Menggunakan SMS Sebagai Pengirim Informasi Data Berbasis Mikrokontroler I Wayan Eka Prastia; I Wayan Arta Wijaya; I Wayan Sukerayasa
Jurnal SPEKTRUM Vol 6 No 1 (2019): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (248.912 KB) | DOI: 10.24843/SPEKTRUM.2019.v06.i01.p09

Abstract

The fires of peatlands on oil palm plantations are very vulnerable to occur in the dry season. Fires will arise due to a decrease in the surface of the water resulting in the top layer of peatland becoming dry. Manually monitoring ground level is very difficult. The solution is to make a remote water level monitoring prototype in order to be able to regulate irrigation on peat land and make the system open and close the irrigation door during the dry season and when the rainy season arrives. The design of groundwater level monitoring uses a program installed on the Arduino Uno microcontroller.Water level data is sent by prototype via GSM SIM 800L network, 8 level conditions that have been determined from a depth of 15 cm multiples of five so on to 55 cm. HC-SR04 Ultrasonic Sensor is a detector for water level. Data can be accessed at any time via SMS by sending "Check" to the prototype. The results of the tests performed indicated that the tool can function in accordance with the design and send information as well as receive monitoring orders.
OPTIMASI INTERKONEKSI DISTRIBUTED GENERATION (DG) PENYULANG PAYOGAN MENGGUNAKAN METODE GENETIC ALGORITHMS (GA) UNTUK MEMPERBAIKI DROP TEGANGAN I Kadek Adiasa; Ngakan Putu Satriya Utama; I Nyoman Setiawan
Jurnal SPEKTRUM Vol 6 No 1 (2019): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (282.989 KB) | DOI: 10.24843/SPEKTRUM.2019.v06.i01.p02

Abstract

Distributed Generation (DG) merupakan pembangkit listrik skala kecil yang umumnya terhubung langsung dengan jaringan distribusi dan dekat dengan pusat beban. Penyulang Payogan merupakan salah satu penyulang yang dekat dengan potensi DG yaitu berupa Pembangkit Listrik Tenaga Mikro Hidro (PLTMH) sungai Ayung yang berada di Wilayah Ubud. Penelitian ini tentang optimasi interkoneksi Distributed Generation ke penyulang Payogan. Tujuan penelitian ini adalah untuk mengetahui pengaruh interkoneksi Distributed Generation pada jaringan distribusi tenaga listrik dan untuk memperbaiki drop tegangan penyulang Payogan menggunakan load flow analysis. Berdasarkan penelitian yang telah dilakukan diperoleh hasil sebelum pemasangan Distributed Generation drop tegangan pada bus 109 sebesar 1,80 V, bus 111 sebesar 1,49 V, bus 113 sebesar 2,56 V dan bus 115 sebesar 2,40 V. Setelah PLTMH dioptimasi menggunakan metode Genetic Algorithms diperoleh hasil pada Bus 107. Dengan kapasitas PLTMH sebesar 2,34 MW berhasil memperbaiki tegangan penyulang Payogan sebesar 0,05%, sehingga drop tengangan pada bus 109 menjadi 1,76 V, bus 111 menjadi 1,45 V, bus 113 menjadi 2,49 V dan bus 115 menjadi 2,35 V.Kata Kunci:Drop Tegangan, Load Flow Analysis, Genetic Algorithms
PERANCANGAN JARINGAN BACKBONE MENGGUNAKAN ROUTING PROTOCOL EIGRP DI FAKULTAS TEKNIK UNIVERSITAS UDAYANA KAMPUS JIMBARAN Naufal Muhajir Abidin; D.M. Wiharta; N.P. Sastra
Jurnal SPEKTRUM Vol 6 No 1 (2019): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (217.384 KB) | DOI: 10.24843/SPEKTRUM.2019.v06.i01.p17

Abstract

The backbone network infrastructure plan is one part of the development of information technology in the area of the Faculty of Engineering, Udayana University. Protocol Routing can be used to support data transmission, information, communication, etc. in the teaching and learning process. In practice, this region still uses the static routing method. But the increasing use of networks is designed by the New Network. The results of this design will be simulated with Cisco Packet Tracer 7.1.1. This new network uses the EIGRP routing protocol and will display some data, namely Packet loss, Throughput, Delay, and Fault Tolerant. Based on the results of testing and analysis of packet loss, in the 21 scenarios tested the same value is 0%. From this experiment the average throughput value was obtained 28.460 bps. This experiment the average value of Delay obtained is 10,95ms. Of the three trials, the data obtained included a very good category and entered at index 4 in the TIPHON qualification. In the Fault Tolerant test it is known that EIGRP has the ability to anticipate failures that occur on the network by finding alternative routes when the shortest path is not possible to pass.
ANALISIS DROP CALL PADA JARINGAN WIDEBAND CODE-DIVISION MULTIPLE ACCESS (WCDMA) DI CLUSTER RENON I Gusti Ngurah Surya Winata; Gede Sukadarmika; Pande Ketut Sudiarta
Jurnal SPEKTRUM Vol 6 No 1 (2019): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (785.183 KB) | DOI: 10.24843/SPEKTRUM.2019.v06.i01.p07

Abstract

Drop call is an example of a problem that is often experienced by users of voice telecommunications services. From this condition, this riset raises the topic of drop call analysis on WCDMA networks in the Renon cluster (nodeB MYAMIN_CR, AKABA_PL, and BUNDARANRENON_PL). Data retrieval needed (Call Set Up Success Rate (CSSR), Call Drop Ratio (CDR), RSCP and Ec/No) is done by drive test using G-NetTrack Pro software. Based on the analysis of the results of the drive test, there were 10 drop call problems. The problems indentified cause by missing neighbors, handover failure, bad spot, coverage problems and overshoot. Bad spots, coverage problems, and overshoot are the initial causes of missing neighbors and handovers failure. Missing neighbors and handover failure begins with the poor value of RSCP and Ec/No, so that the cellphone will try to do a handover. To analyze the drive test results, drive test data is carried out using Atoll software. From the comparison found extreme conditions resulting from obstacle which cause a significant difference in value between the results of the drive test and simulation. The high attenuation rate drop call location due to the obstacle also results in RSCP and Ec/No values being obtained when measurements in the field are low. The low parameter values of RSCP and Ec / No then cause a drop call.

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